(function webpackUniversalModuleDefinition(root, factory) { if(typeof exports === 'object' && typeof module === 'object') module.exports = factory(); else if(typeof define === 'function' && define.amd) define([], factory); else if(typeof exports === 'object') exports["ml5"] = factory(); else root["ml5"] = factory(); })(window, function() { return /******/ (function(modules) { // webpackBootstrap /******/ // The module cache /******/ var installedModules = {}; /******/ /******/ // The require function /******/ function __webpack_require__(moduleId) { /******/ /******/ // Check if module is in cache /******/ if(installedModules[moduleId]) { /******/ return installedModules[moduleId].exports; /******/ } /******/ // Create a new module (and put it into the cache) /******/ var module = installedModules[moduleId] = { /******/ i: moduleId, /******/ l: false, /******/ exports: {} /******/ }; /******/ /******/ // Execute the module function /******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__); /******/ /******/ // Flag the module as loaded /******/ module.l = true; /******/ /******/ // Return the exports of the module /******/ return module.exports; /******/ } /******/ /******/ /******/ // expose the modules object (__webpack_modules__) /******/ __webpack_require__.m = modules; /******/ /******/ // expose the module cache /******/ __webpack_require__.c = installedModules; /******/ /******/ // define getter function for harmony exports /******/ __webpack_require__.d = function(exports, name, getter) { /******/ if(!__webpack_require__.o(exports, name)) { /******/ Object.defineProperty(exports, name, { /******/ configurable: false, /******/ enumerable: true, /******/ get: getter /******/ }); /******/ } /******/ }; /******/ /******/ // define __esModule on exports /******/ __webpack_require__.r = function(exports) { /******/ Object.defineProperty(exports, '__esModule', { value: true }); /******/ }; /******/ /******/ // getDefaultExport function for compatibility with non-harmony modules /******/ __webpack_require__.n = function(module) { /******/ var getter = module && module.__esModule ? /******/ function getDefault() { return module['default']; } : /******/ function getModuleExports() { return module; }; /******/ __webpack_require__.d(getter, 'a', getter); /******/ return getter; /******/ }; /******/ /******/ // Object.prototype.hasOwnProperty.call /******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); }; /******/ /******/ // __webpack_public_path__ /******/ __webpack_require__.p = "/"; /******/ /******/ /******/ // Load entry module and return exports /******/ return __webpack_require__(__webpack_require__.s = 693); /******/ }) /************************************************************************/ /******/ ([ /* 0 */ /***/ (function(module, __webpack_exports__, __webpack_require__) { "use strict"; __webpack_require__.r(__webpack_exports__); /* WEBPACK VAR INJECTION */(function(global, process, Buffer, setImmediate) {/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "AdadeltaOptimizer", function() { return Yd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "AdagradOptimizer", function() { return $d; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "AdamOptimizer", function() { return Qd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "AdamaxOptimizer", function() { return Jd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Add", function() { return xr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "AddN", function() { return br; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "BroadcastTo", function() { return Sr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "DataStorage", function() { return ca; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Div", function() { return wr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "ENV", function() { return s; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Environment", function() { return o; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "FromPixels", function() { return Fr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "FusedBatchNorm", function() { return Cr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Identity", function() { return Tr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "KernelBackend", function() { return la; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MaxPoolWithArgmax", function() { return _r; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "MomentumOptimizer", function() { return tp; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "NonMaxSuppressionV5", function() { return kr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "OneHot", function() { return Ar; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Optimizer", function() { return Xd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "PadV2", function() { return Nr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "RMSPropOptimizer", function() { return ep; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Rank", function() { return Ct; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Reduction", function() { return Nh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "SGDOptimizer", function() { return Zd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Square", function() { return Rr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "SquaredDifference", function() { return Er; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Tensor", function() { return wt; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "TensorBuffer", function() { return mt; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Tile", function() { return Dr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Transpose", function() { return Ir; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Variable", function() { return St; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "abs", function() { return Lr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "acos", function() { return Wr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "acosh", function() { return Ur; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "add", function() { return Or; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "addN", function() { return $u; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "addStrict", function() { return xo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "all", function() { return ql; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "any", function() { return Kl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "argMax", function() { return jl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "argMin", function() { return Xl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "asin", function() { return Vr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "asinh", function() { return zr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "atan", function() { return Gr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "atan2", function() { return bo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "atanh", function() { return Hr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "avgPool", function() { return Ol; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "avgPool3d", function() { return Pl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "backend", function() { return hn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "backend_util", function() { return Sa; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "basicLSTMCell", function() { return lh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "batchNorm", function() { return nc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "batchNorm2d", function() { return ac; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "batchNorm3d", function() { return uc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "batchNorm4d", function() { return hc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "batchNormalization", function() { return ec; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "batchNormalization2d", function() { return oc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "batchNormalization3d", function() { return sc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "batchNormalization4d", function() { return lc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "batchToSpaceND", function() { return rr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "booleanMaskAsync", function() { return ul; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "broadcastTo", function() { return fc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "browser", function() { return Vd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "buffer", function() { return er; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "cast", function() { return or; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "ceil", function() { return qr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "clipByValue", function() { return Kr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "clone", function() { return dc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "complex", function() { return Tn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "concat", function() { return Yn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "concat1d", function() { return $n; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "concat2d", function() { return Qn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "concat3d", function() { return Jn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "concat4d", function() { return Zn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "conv1d", function() { return fl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "conv2d", function() { return dl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "conv2dTranspose", function() { return wl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "conv3d", function() { return pl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "conv3dTranspose", function() { return Cl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "cos", function() { return jr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "cosh", function() { return Xr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "cumsum", function() { return ar; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "customGrad", function() { return oa; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "deprecationWarn", function() { return Xe; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "depthToSpace", function() { return ir; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "depthwiseConv2d", function() { return ml; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "diag", function() { return Eh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "disableDeprecationWarnings", function() { return je; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "dispose", function() { return tn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "disposeVariables", function() { return Ye; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "div", function() { return Bo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "divNoNan", function() { return bc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "divStrict", function() { return wo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "dot", function() { return Rl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "dropout", function() { return Rh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "elu", function() { return nh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "enableDebugMode", function() { return Ke; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "enableProdMode", function() { return qe; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "engine", function() { return $e; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "env", function() { return i; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "equal", function() { return Kc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "equalStrict", function() { return jc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "erf", function() { return Yr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "exp", function() { return $r; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "expandDims", function() { return sr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "expm1", function() { return Qr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "eye", function() { return Cc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "fft", function() { return gh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "fill", function() { return Hn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "findBackend", function() { return un; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "findBackendFactory", function() { return cn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "floor", function() { return Jr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "floorDiv", function() { return Co; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "frame", function() { return Ah; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "fused", function() { return hf; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "gather", function() { return il; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "gatherND", function() { return Ch; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "gather_util", function() { return Lo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "getBackend", function() { return an; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "getGradient", function() { return h; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "getKernel", function() { return l; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "getKernelsForBackend", function() { return f; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "grad", function() { return Zo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "grads", function() { return ta; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "greater", function() { return Xc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "greaterEqual", function() { return Yc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "greaterEqualStrict", function() { return $c; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "greaterStrict", function() { return Qc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "hammingWindow", function() { return Sh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "hannWindow", function() { return kh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "ifft", function() { return mh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "imag", function() { return Nn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "image", function() { return nf; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "inTopKAsync", function() { return Fh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "io", function() { return Bd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "irfft", function() { return xh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "isFinite", function() { return lo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "isInf", function() { return co; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "isNaN", function() { return uo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "keep", function() { return en; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "leakyRelu", function() { return rh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "less", function() { return Jc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "lessEqual", function() { return Zc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "lessEqualStrict", function() { return tl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "lessStrict", function() { return el; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "linalg", function() { return jh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "linspace", function() { return qn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "localResponseNormalization", function() { return uh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "log", function() { return Zr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "log1p", function() { return to; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "logSigmoid", function() { return eo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "logSoftmax", function() { return sa; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "logSumExp", function() { return Yl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "logicalAnd", function() { return pc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "logicalNot", function() { return vc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "logicalOr", function() { return gc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "logicalXor", function() { return mc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "losses", function() { return zh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "matMul", function() { return El; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "math", function() { return Wd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "max", function() { return $l; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "maxPool", function() { return _l; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "maxPool3d", function() { return Bl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "maxPoolWithArgmax", function() { return Ll; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "maximum", function() { return Eo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "maximumStrict", function() { return Ro; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "mean", function() { return Ql; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "memory", function() { return Qe; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "min", function() { return Jl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "minimum", function() { return Io; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "minimumStrict", function() { return ko; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "mod", function() { return So; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "modStrict", function() { return Ao; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "moments", function() { return Zl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "movingAverage", function() { return fh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "mul", function() { return To; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "mulStrict", function() { return Do; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "multiRNNCell", function() { return hh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "multinomial", function() { return Ec; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "neg", function() { return no; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "nextFrame", function() { return ap; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "norm", function() { return ch; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "notEqual", function() { return nl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "notEqualStrict", function() { return rl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "oneHot", function() { return Rc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "ones", function() { return zn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "onesLike", function() { return jn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "op", function() { return An; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "outerProduct", function() { return Il; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "pad", function() { return Ic; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "pad1d", function() { return kc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "pad2d", function() { return Sc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "pad3d", function() { return Ac; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "pad4d", function() { return Tc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "pool", function() { return Ml; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "pow", function() { return No; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "powStrict", function() { return Fo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "prelu", function() { return oh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "print", function() { return nr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "prod", function() { return eh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "profile", function() { return Je; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "rand", function() { return Dc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "randomGamma", function() { return Uc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "randomNormal", function() { return Vc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "randomUniform", function() { return zc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "range", function() { return Kn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "ready", function() { return on; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "real", function() { return Dn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "reciprocal", function() { return ro; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "registerBackend", function() { return ln; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "registerGradient", function() { return p; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "registerKernel", function() { return d; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "relu", function() { return ah; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "relu6", function() { return ih; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "removeBackend", function() { return sn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "reshape", function() { return ur; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "reverse", function() { return kl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "reverse1d", function() { return Sl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "reverse2d", function() { return Al; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "reverse3d", function() { return Tl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "reverse4d", function() { return Dl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "rfft", function() { return yh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "round", function() { return oo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "rsqrt", function() { return ao; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "scalar", function() { return On; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "scatterND", function() { return vh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "scatter_util", function() { return Ho; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "selu", function() { return sh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "separableConv2d", function() { return bl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "serialization", function() { return qd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "setBackend", function() { return rn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "setPlatform", function() { return fn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "setdiff1dAsync", function() { return dr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sigmoid", function() { return io; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sign", function() { return so; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "signal", function() { return Dh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sin", function() { return ho; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sinh", function() { return fo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "slice", function() { return Wl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "slice1d", function() { return Ul; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "slice2d", function() { return Vl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "slice3d", function() { return zl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "slice4d", function() { return Gl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "slice_util", function() { return Jo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "softmax", function() { return ia; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "softplus", function() { return po; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "spaceToBatchND", function() { return cr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sparseToDense", function() { return wh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "spectral", function() { return bh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "split", function() { return tr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sqrt", function() { return vo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "square", function() { return Gc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "squaredDifference", function() { return Hc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "squaredDifferenceStrict", function() { return _o; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "squeeze", function() { return lr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "stack", function() { return hr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "step", function() { return go; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "stft", function() { return Th; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "stridedSlice", function() { return dh; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sub", function() { return Oo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "subStrict", function() { return Mo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sum", function() { return th; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "sumOutType", function() { return Dt; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tan", function() { return mo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tanh", function() { return yo; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tensor", function() { return Fn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tensor1d", function() { return Mn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tensor2d", function() { return Bn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tensor3d", function() { return Pn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tensor4d", function() { return Ln; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tensor5d", function() { return Wn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tensor6d", function() { return Un; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tensor_util", function() { return Mt; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "test_util", function() { return Bc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tidy", function() { return Ze; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "tile", function() { return wc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "time", function() { return nn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "topk", function() { return ph; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "train", function() { return rp; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "transpose", function() { return ua; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "truncatedNormal", function() { return qc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "unregisterGradient", function() { return g; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "unregisterKernel", function() { return v; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "unsortedSegmentSum", function() { return sl; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "unstack", function() { return fr; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "util", function() { return st; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "valueAndGrad", function() { return ea; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "valueAndGrads", function() { return na; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "variable", function() { return Vn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "variableGrads", function() { return ra; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "version_core", function() { return Kd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "webgl", function() { return jd; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "where", function() { return yc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "whereAsync", function() { return xc; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "zeros", function() { return Gn; }); /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "zerosLike", function() { return Xn; }); /** * @license * Copyright 2020 Google LLC. All Rights Reserved. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ============================================================================= */ var t=function(e,n){return(t=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var n in e)e.hasOwnProperty(n)&&(t[n]=e[n])})(e,n)};function e(e,n){function r(){this.constructor=e}t(e,n),e.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}function n(t,e,n,r){return new(n||(n=Promise))((function(o,a){function i(t){try{u(r.next(t))}catch(t){a(t)}}function s(t){try{u(r.throw(t))}catch(t){a(t)}}function u(t){t.done?o(t.value):new n((function(e){e(t.value)})).then(i,s)}u((r=r.apply(t,e||[])).next())}))}function r(t,e){var n,r,o,a,i={label:0,sent:function(){if(1&o[0])throw o[1];return o[1]},trys:[],ops:[]};return a={next:s(0),throw:s(1),return:s(2)},"function"==typeof Symbol&&(a[Symbol.iterator]=function(){return this}),a;function s(a){return function(s){return function(a){if(n)throw new TypeError("Generator is already executing.");for(;i;)try{if(n=1,r&&(o=2&a[0]?r.return:a[0]?r.throw||((o=r.return)&&o.call(r),0):r.next)&&!(o=o.call(r,a[1])).done)return o;switch(r=0,o&&(a=[2&a[0],o.value]),a[0]){case 0:case 1:o=a;break;case 4:return i.label++,{value:a[1],done:!1};case 5:i.label++,r=a[1],a=[0];continue;case 7:a=i.ops.pop(),i.trys.pop();continue;default:if(!(o=(o=i.trys).length>0&&o[o.length-1])&&(6===a[0]||2===a[0])){i=0;continue}if(3===a[0]&&(!o||a[1]>o[0]&&a[1]0;)r=Math.random()*e|0,n=t[--e],t[e]=t[r],t[r]=n}function x(t,e,n){return Math.max(t,Math.min(e,n))}function b(t){return t%2==0?t:t+1}function w(t){for(var e=0,n=0;n=n?o():setTimeout(i,s)}};i()}))}function _(t,e){for(var n=1,r=-1,o=0;o=0)n*=t[o];else if(-1===t[o]){if(-1!==r)throw Error("Shapes can only have 1 implicit size. Found -1 at dim "+r+" and dim "+o);r=o}else if(t[o]<0)throw Error("Shapes can not be < 0. Found "+t[o]+" at dim "+o);if(-1===r){if(e>0&&e!==n)throw Error("Size("+e+") must match the product of shape "+t);return t}if(0===n)throw Error("Cannot infer the missing size in ["+t+"] when there are 0 elements");if(e%n!=0)throw Error("The implicit shape can't be a fractional number. Got "+e+" / "+n);var a=t.slice();return a[r]=e/n,a}function O(t,e){var n=e.length;return C((t=null==t?e.map((function(t,e){return e})):[].concat(t)).every((function(t){return t>=-n&&ts)&&1===t[s]&&(n.push(t[s]),r.push(s)),a[i]<=s&&i++}1!==t[s]&&(n.push(t[s]),r.push(s))}return{newShape:n,keptDims:r}}function B(t,e){var n=null;if(null==t||"float32"===t)n=new Float32Array(e);else if("int32"===t)n=new Int32Array(e);else{if("bool"!==t)throw new Error("Unknown data type "+t);n=new Uint8Array(e)}return n}function P(t,e){var n=null;if(null==t||"float32"===t)n=new Float32Array(e);else if("int32"===t)n=new Int32Array(e);else if("bool"===t)n=new Uint8Array(e);else{if("string"!==t)throw new Error("Unknown data type "+t);n=new Array(e)}return n}function L(t,e){for(var n=0;n=0;--r)n[r]=n[r+1]*t[r+1];return n}function Q(t,e,n){if("string"===e)throw new Error("Cannot convert a string[] to a TypedArray");if(Array.isArray(t)&&(t=I(t)),n&&L(t,e),function(t,e){return t instanceof Float32Array&&"float32"===e||t instanceof Int32Array&&"int32"===e||t instanceof Uint8Array&&"bool"===e}(t,e))return t;if(null==e||"float32"===e||"complex64"===e)return new Float32Array(t);if("int32"===e)return new Int32Array(t);if("bool"===e){for(var r=new Uint8Array(t.length),o=0;o=0,(function(){return"Tensor must have a shape comprised of positive integers but got shape ["+t+"]."}))}))}function rt(t,e){return void 0===e&&(e="utf-8"),e=e||"utf-8",i().platform.encode(t,e)}function ot(t,e){return void 0===e&&(e="utf-8"),e=e||"utf-8",i().platform.decode(t,e)}function at(t,e,n){if(0===e)return 0;if(1===e)return t[0];for(var r=t[t.length-1],o=0;o0?d:"")+" "}console.log("%c"+s+"\t%c"+i+"\t%c"+u+"D "+l+"\t%c"+c+"\t%c"+h+"\t%c"+a,"font-weight:bold","color:red","color:blue","color: orange","color: green","color: steelblue")},t}();var lt=20,ht=3,ft=7;function dt(t,e,n,r){var o=$(e),a=function(t,e,n,r){var o=k(e),a=r[r.length-1],i=new Array(a).fill(0),s=e.length,u="complex64"===n?gt(t):t;if(s>1)for(var c=0;clt){var l=ht*s,h=Array.from(e.slice(0,l)),f=Array.from(e.slice((u-ht)*s,u*s));return"complex64"===r&&(h=gt(h),f=gt(f)),["["+h.map((function(t,e){return pt(t,a[e],r)})).join(", ")+", ..., "+f.map((function(t,e){return pt(t,a[u-ht+e],r)})).join(", ")+"]"]}return["["+("complex64"===r?gt(e):Array.from(e)).map((function(t,e){return pt(t,a[e],r)})).join(", ")+"]"]}var d=n.slice(1),p=o.slice(1),v=o[0]*s,g=[];if(u>lt){for(var m=0;m=this.shape[n]){var i="Requested out of range element at "+t+". Buffer shape="+this.shape;throw new Error(i)}n++}for(var s=t[t.length-1],u=0;u0)throw new Error("Backend '"+this.backendName+"' has an internal memory leak ("+i+" data ids) after running '"+t+"'")},t.prototype.runKernelFunc=function(t,e,n,r,o,a,i){var s,u=this,c=[],h=this.isTapeOn();null==r&&(r=null!=this.state.activeScope?this.state.activeScope.name:"");var f,d=this.state.numBytes,p=this.state.numTensors;this.shouldCheckForMemLeaks()&&this.state.numDataMovesStack.push(0);var v,g=l(r,this.backendName);if(null!=g)f=function(){var t=u.backend.numDataIds();v=g.kernelFunc({inputs:e,attrs:o,backend:u.backend});var n=Array.isArray(v)?v:[v];u.shouldCheckForMemLeaks()&&u.checkKernelForMemLeak(r,t,n);var s=n.map((function(t){var e=t.dataId,n=t.shape,r=t.dtype;return u.makeTensorFromDataId(e,n,r)}));if(h){var l=u.getTensorsForGradient(r,e,s);if(null==l){null==i&&(i=[]);var f=s.filter((function(t,e){return i[e]}));l=(a||[]).slice().concat(f)}c=u.saveTensorsForBackwardMode(l)}return s};else{var m=function(t){h&&(c=t.map((function(t){return u.keep(u.clone(t))})))};f=function(){var e=u.backend.numDataIds();v=u.tidy((function(){return t(u.backend,m)}));var n=Array.isArray(v)?v:[v];return u.shouldCheckForMemLeaks()&&u.checkKernelForMemLeak(r,e,n),n}}return this.scopedRun((function(){return u.state.kernelDepth++}),(function(){return u.state.kernelDepth--}),(function(){s=u.ENV.getBool("DEBUG")?u.profiler.profileKernel(r,e,(function(){return f()})):f()})),h&&this.addTapeNode(r,e,s,n,c,o),this.state.profiling&&this.state.activeProfile.kernels.push({name:r,bytesAdded:this.state.numBytes-d,totalBytesSnapshot:this.state.numBytes,tensorsAdded:this.state.numTensors-p,totalTensorsSnapshot:this.state.numTensors,inputShapes:Object.keys(e).map((function(t){return e[t].shape})),outputShapes:s.map((function(t){return t.shape}))}),Array.isArray(v)?s:s[0]},t.prototype.saveTensorsForBackwardMode=function(t){var e=this;return t.map((function(t){return e.keep(e.clone(t))}))},t.prototype.getTensorsForGradient=function(t,e,n){var r=h(t);if(null!=r){var o=r.inputsToSave||[],a=r.outputsToSave||[],i=void 0;r.saveAllInputs?(C(Array.isArray(e),(function(){return"saveAllInputs is true, expected inputs to be an array."})),i=Object.keys(e).map((function(t){return e[t]}))):i=o.map((function(t){return e[t]}));var s=n.filter((function(t,e){return a[e]}));return i.concat(s)}return null},t.prototype.makeTensor=function(t,e,n,r){if(null==t)throw new Error("Values passed to engine.makeTensor() are null");n=n||"float32",r=r||this.backend;var o=t;"string"===n&&H(t[0])&&(o=t.map((function(t){return rt(t)})));var a=r.write(o,e,n),i=new wt(e,n,a,this.nextTensorId());if(this.incRef(i,r),"string"===n){var s=this.state.tensorInfo.get(a),u=G(o);this.state.numBytes+=u-s.bytes,s.bytes=u}return i},t.prototype.makeTensorFromDataId=function(t,e,n,r){var o=new wt(e,n=n||"float32",t,this.nextTensorId());return this.incRef(o,r),o},t.prototype.makeVariable=function(t,e,n,r){void 0===e&&(e=!0),n=n||this.nextVariableId().toString(),null!=r&&r!==t.dtype&&(t=t.asType(r));var o=new St(t,e,n,this.nextTensorId());if(null!=this.state.registeredVariables[o.name])throw new Error("Variable with name "+o.name+" was already registered");return this.state.registeredVariables[o.name]=o,this.incRef(o,this.backend),o},t.prototype.incRef=function(t,e){var n=this.state.tensorInfo.has(t.dataId)?this.state.tensorInfo.get(t.dataId).refCount:0;if(this.state.numTensors++,"string"===t.dtype&&this.state.numStringTensors++,0===n){this.state.numDataBuffers++;var r=0;"complex64"!==t.dtype&&"string"!==t.dtype&&(r=t.size*z(t.dtype)),this.state.tensorInfo.set(t.dataId,{backend:e||this.backend,dtype:t.dtype,shape:t.shape,bytes:r,refCount:0}),this.state.numBytes+=r}this.state.tensorInfo.get(t.dataId).refCount++,t instanceof St||this.track(t)},t.prototype.disposeTensor=function(t){if(this.state.tensorInfo.has(t.dataId)){this.state.numTensors--,"string"===t.dtype&&this.state.numStringTensors--;var e=this.state.tensorInfo.get(t.dataId);e.refCount<=1?("complex64"!==t.dtype&&(this.state.numBytes-=e.bytes),this.state.numDataBuffers--,e.backend.disposeData(t.dataId),this.state.tensorInfo.delete(t.dataId)):this.state.tensorInfo.get(t.dataId).refCount--}},t.prototype.disposeVariables=function(){for(var t in this.state.registeredVariables){var e=this.state.registeredVariables[t];this.disposeVariable(e)}},t.prototype.disposeVariable=function(t){this.disposeTensor(t),null!=this.state.registeredVariables[t.name]&&delete this.state.registeredVariables[t.name]},t.prototype.memory=function(){var t=this.backend.memory();return t.numTensors=this.state.numTensors,t.numDataBuffers=this.state.numDataBuffers,t.numBytes=this.state.numBytes,this.state.numStringTensors>0&&(t.unreliable=!0,null==t.reasons&&(t.reasons=[]),t.reasons.push("Memory usage by string tensors is approximate (2 bytes per character)")),t},t.prototype.profile=function(t){return n(this,void 0,void 0,(function(){var e,n;return r(this,(function(r){return this.state.profiling=!0,e=this.state.numBytes,n=this.state.numTensors,this.state.activeProfile.kernels=[],this.state.activeProfile.result=t(),this.state.profiling=!1,this.state.activeProfile.peakBytes=Math.max.apply(Math,this.state.activeProfile.kernels.map((function(t){return t.totalBytesSnapshot}))),this.state.activeProfile.newBytes=this.state.numBytes-e,this.state.activeProfile.newTensors=this.state.numTensors-n,[2,this.state.activeProfile]}))}))},t.prototype.isTapeOn=function(){return this.state.gradientDepth>0&&0===this.state.kernelDepth},t.prototype.addTapeNode=function(t,e,n,r,o,a){var i=this,s={id:this.state.nextTapeNodeId++,kernelName:t,inputs:e,outputs:n,saved:o},u=h(t);null!=u&&(r=u.gradFunc),null!=r&&(s.gradient=function(t){return t=t.map((function(t,e){if(null==t){var r=n[e],o=tt(r.size,r.dtype);return i.makeTensor(o,r.shape,r.dtype)}return t})),r(t.length>1?t:t[0],o,a)}),this.state.activeTape.push(s)},t.prototype.keep=function(t){return t.kept=!0,t},t.prototype.startTape=function(){0===this.state.gradientDepth&&(this.state.activeTape=[]),this.state.gradientDepth++},t.prototype.endTape=function(){this.state.gradientDepth--},t.prototype.startScope=function(t){var e={track:[],name:"unnamed scope",id:this.state.nextScopeId++};t&&(e.name=t),this.state.scopeStack.push(e),this.state.activeScope=e},t.prototype.endScope=function(t){for(var e=this,n=_t(t),r=new Set(n.map((function(t){return t.id}))),o=0;o0,(function(){return"gradients() received an empty list of xs."})),null!=n&&"float32"!==n.dtype)throw new Error("dy must have 'float32' dtype, but has '"+n.dtype+"'");var a=this.scopedRun((function(){return o.startTape()}),(function(){return o.endTape()}),(function(){return o.tidy("forward",t)}));C(a instanceof wt,(function(){return"The result y returned by f() must be a tensor."}));var i=function(t,e,n){for(var r={},o={},a=0;a=0;a--)for(i=(p=t[a]).inputs,l=0;l0)throw new Error("Cannot compute gradient of y=f(x) with respect to x. Make sure that the f you passed encloses all operations that lead from x to y.");return this.tidy("backward",(function(){var t,r,s={};s[a.id]=null==n?(t=a.shape,r=Z(k(t),"float32"),Lt.makeTensor(r,t,"float32")):n,function(t,e,n){for(var r=function(r){var o=e[r],a=[];if(o.outputs.forEach((function(e){var n=t[e.id];null!=n?a.push(n):a.push(null)})),null==o.gradient)throw new Error("Cannot compute gradient: gradient function not found for "+o.kernelName+".");var i=o.gradient(a),s=function(e){if(!(e in i))throw new Error("Cannot backprop through input "+e+". Available gradients found: "+Object.keys(i)+".");var r=n((function(){return i[e]()}));if("float32"!==r.dtype)throw new Error("Error in gradient for op "+o.kernelName+". The gradient of input "+e+" must have 'float32' dtype, but has '"+r.dtype+"'");var a=o.inputs[e];if(!S(r.shape,a.shape))throw new Error("Error in gradient for op "+o.kernelName+". The gradient of input '"+e+"' has shape '"+r.shape+"', which does not match the shape of the input '"+a.shape+"'");if(null==t[a.id])t[a.id]=r;else{var s=t[a.id];t[a.id]=s.add(r),s.dispose()}};for(var u in o.inputs)s(u)},o=e.length-1;o>=0;o--)r(o)}(s,i,(function(t){return o.tidy(t)}));var u=e.map((function(t){return s[t.id]}));return 0===o.state.gradientDepth&&(o.state.activeTape.forEach((function(t){for(var e=0,n=t.saved;en||e>n){r="["+t+"x"+e+"]";throw new Error("Requested texture size "+r+" greater than WebGL maximum on this browser / GPU "+("["+n+"x"+n+"]")+".")}}function ge(t,e){return ke(t,e,(function(){return t.createFramebuffer()}),"Unable to create WebGLFramebuffer.")}function me(t,e,n,r,o,a,i,s){var u=t.getAttribLocation(n,r);return-1!==u&&(Jt(t,e,(function(){return t.bindBuffer(t.ARRAY_BUFFER,o)})),Jt(t,e,(function(){return t.vertexAttribPointer(u,a,t.FLOAT,!1,i,s)})),Jt(t,e,(function(){return t.enableVertexAttribArray(u)})),!0)}function ye(t,e,n,r){Se(t,r),Jt(t,e,(function(){return t.activeTexture(t.TEXTURE0+r)})),Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,n)}))}function xe(t,e,n,r){return ke(t,e,(function(){return t.getUniformLocation(n,r)}),'uniform "'+r+'" not present in program.')}function be(t,e,n){return t.getUniformLocation(e,n)}function we(t,e,n,r,o,a){Jt(t,e,(function(){return ye(t,e,r,a)})),Jt(t,e,(function(){return t.uniform1i(o,a)}))}function Ce(t,e,n,r){Jt(t,e,(function(){return t.bindFramebuffer(t.FRAMEBUFFER,r)})),Jt(t,e,(function(){return t.framebufferTexture2D(t.FRAMEBUFFER,t.COLOR_ATTACHMENT0,t.TEXTURE_2D,n,0)}))}function Ee(t,e,n){Jt(t,e,(function(){return t.bindFramebuffer(t.FRAMEBUFFER,n)})),Jt(t,e,(function(){return t.framebufferTexture2D(t.FRAMEBUFFER,t.COLOR_ATTACHMENT0,t.TEXTURE_2D,null,0)}))}function Re(t){var e=t.checkFramebufferStatus(t.FRAMEBUFFER);if(e!==t.FRAMEBUFFER_COMPLETE)throw new Error("Error binding framebuffer: "+Ie(t,e))}function Ie(t,e){switch(e){case t.FRAMEBUFFER_INCOMPLETE_ATTACHMENT:return"FRAMEBUFFER_INCOMPLETE_ATTACHMENT";case t.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:return"FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT";case t.FRAMEBUFFER_INCOMPLETE_DIMENSIONS:return"FRAMEBUFFER_INCOMPLETE_DIMENSIONS";case t.FRAMEBUFFER_UNSUPPORTED:return"FRAMEBUFFER_UNSUPPORTED";default:return"unknown error "+e}}function ke(t,e,n,r){var o=Jt(t,e,(function(){return n()}));if(null==o)throw new Error(r);return o}function Se(t,e){var n=t.MAX_COMBINED_TEXTURE_IMAGE_UNITS-1,r=e+t.TEXTURE0;if(rn)throw new Error("textureUnit must be in "+("[gl.TEXTURE0, gl.TEXTURE"+n+"]")+".")}function Ae(t,e){return void 0===e&&(e=2),k(t.slice(0,t.length-e))}function Te(t){if(0===t.length)throw Error("Cannot get rows and columns of an empty shape array.");return[t.length>1?t[t.length-2]:1,t[t.length-1]]}function De(t){var e=[1,1,1];return 0===t.length||1===t.length&&1===t[0]||(e=[Ae(t)].concat(Te(t))),e}function Ne(t,e){var n;void 0===e&&(e=!1);var r=i().getNumber("WEBGL_MAX_TEXTURE_SIZE");if(e&&(r*=2,1===(t=t.map((function(e,n){return n>=t.length-2?b(t[n]):t[n]}))).length&&(t=[2,t[0]])),2!==t.length){var o=M(t);t=o.newShape}var a=k(t);if(t.length<=1&&a<=r)return[1,a];if(2===t.length&&t[0]<=r&&t[1]<=r)return t;if(3===t.length&&t[0]*t[1]<=r&&t[2]<=r)return[t[0]*t[1],t[2]];if(3===t.length&&t[0]<=r&&t[1]*t[2]<=r)return[t[0],t[1]*t[2]];if(4===t.length&&t[0]*t[1]*t[2]<=r&&t[3]<=r)return[t[0]*t[1]*t[2],t[3]];if(4===t.length&&t[0]<=r&&t[1]*t[2]*t[3]<=r)return[t[0],t[1]*t[2]*t[3]];if(e){var s=Ae(t),u=2,c=2;return t.length&&(u=(n=Te(t))[0],c=n[1]),D(a=s*(u/2)*(c/2)).map((function(t){return 2*t}))}return D(a)}function Fe(t){return t%2==0}function _e(t,e){if(S(t=t.slice(-2),e=e.slice(-2)))return!0;if(!t.length||!e.length)return!0;if(0===t[0]||0===t[1]||0===e[0]||0===e[1])return!0;if(t.length!==e.length){var n=t.slice(-1)[0],r=e.slice(-1)[0];if(n===r)return!0;if(Fe(n)&&Fe(r)&&(1===t[0]||1===e[0]))return!0}return t[1]===e[1]&&Fe(t[0])&&Fe(e[0])}function Oe(t){if(null==ie){var e=jt(t);ie=e.getParameter(e.MAX_TEXTURE_SIZE)}return ie}function Me(t){if(null==se){var e=jt(t);se=e.getParameter(e.MAX_TEXTURE_IMAGE_UNITS)}return Math.min(16,se)}function Be(t){if(0===t)return 0;var e=jt(t);return Pe(e,"EXT_disjoint_timer_query_webgl2")&&2===t?2:Pe(e,"EXT_disjoint_timer_query")?1:0}function Pe(t,e){return null!=t.getExtension(e)}function Le(t){try{if(null!=jt(t))return!0}catch(t){return!1}return!1}function We(t){if(0===t)return!1;var e=jt(t);if(1===t){if(!Pe(e,"OES_texture_float"))return!1}else if(!Pe(e,"EXT_color_buffer_float"))return!1;return Ve(e)}function Ue(t){if(0===t)return!1;var e=jt(t);if(1!==t){if(Pe(e,"EXT_color_buffer_float"))return Ve(e);if(Pe(e,"EXT_color_buffer_half_float")){var n=e.getExtension("EXT_color_buffer_half_float");return function(t,e){var n=Qt(t,e),r=t.createTexture();t.bindTexture(t.TEXTURE_2D,r);t.texImage2D(t.TEXTURE_2D,0,n.internalFormatHalfFloat,1,1,0,n.textureFormatFloat,n.textureTypeHalfFloat,null);var o=t.createFramebuffer();t.bindFramebuffer(t.FRAMEBUFFER,o),t.framebufferTexture2D(t.FRAMEBUFFER,t.COLOR_ATTACHMENT0,t.TEXTURE_2D,r,0);var a=t.checkFramebufferStatus(t.FRAMEBUFFER)===t.FRAMEBUFFER_COMPLETE;return t.bindTexture(t.TEXTURE_2D,null),t.bindFramebuffer(t.FRAMEBUFFER,null),t.deleteTexture(r),t.deleteFramebuffer(o),a}(e,n)}return!1}return!!Pe(e,"OES_texture_float")&&(!!Pe(e,"WEBGL_color_buffer_float")&&Ve(e))}function Ve(t){var e=Qt(t),n=t.createTexture();t.bindTexture(t.TEXTURE_2D,n);t.texImage2D(t.TEXTURE_2D,0,e.internalFormatFloat,1,1,0,e.textureFormatFloat,e.textureTypeFloat,null);var r=t.createFramebuffer();t.bindFramebuffer(t.FRAMEBUFFER,r),t.framebufferTexture2D(t.FRAMEBUFFER,t.COLOR_ATTACHMENT0,t.TEXTURE_2D,n,0);var o=t.checkFramebufferStatus(t.FRAMEBUFFER)===t.FRAMEBUFFER_COMPLETE;return t.bindTexture(t.TEXTURE_2D,null),t.bindFramebuffer(t.FRAMEBUFFER,null),t.deleteTexture(n),t.deleteFramebuffer(r),o}function ze(t){return 2===t&&null!=jt(t).fenceSync}var Ge=Object.freeze({callAndCheck:Jt,canBeRepresented:ee,getWebGLErrorMessage:ne,getExtensionOrThrow:re,createVertexShader:oe,createFragmentShader:ae,createProgram:ce,linkProgram:le,validateProgram:he,createStaticVertexBuffer:fe,createStaticIndexBuffer:de,getNumChannels:function(){return 2===i().getNumber("WEBGL_VERSION")?1:4},createTexture:pe,validateTextureSize:ve,createFramebuffer:ge,bindVertexBufferToProgramAttribute:me,bindTextureUnit:ye,unbindTextureUnit:function(t,e,n){Se(t,n),Jt(t,e,(function(){return t.activeTexture(t.TEXTURE0+n)})),Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,null)}))},getProgramUniformLocationOrThrow:xe,getProgramUniformLocation:be,bindTextureToProgramUniformSampler:we,bindCanvasToFramebuffer:function(t,e){Jt(t,e,(function(){return t.bindFramebuffer(t.FRAMEBUFFER,null)})),Jt(t,e,(function(){return t.viewport(0,0,t.canvas.width,t.canvas.height)})),Jt(t,e,(function(){return t.scissor(0,0,t.canvas.width,t.canvas.height)}))},bindColorTextureToFramebuffer:Ce,unbindColorTextureFromFramebuffer:Ee,validateFramebuffer:Re,getFramebufferErrorMessage:Ie,getBatchDim:Ae,getRowsCols:Te,getShapeAs3D:De,getTextureShapeFromLogicalShape:Ne,isReshapeFree:_e,getWebGLMaxTextureSize:Oe,resetMaxTextureSize:function(){ie=null},resetMaxTexturesInShader:function(){se=null},getMaxTexturesInShader:Me,getWebGLDisjointQueryTimerVersion:Be,hasExtension:Pe,isWebGLVersionEnabled:Le,isCapableOfRenderingToFloatTexture:We,isDownloadFloatTextureEnabled:Ue,isWebGLFenceEnabled:ze}),He=i();function qe(){i().set("PROD",!0)}function Ke(){i().set("DEBUG",!0)}function je(){i().set("DEPRECATION_WARNINGS_ENABLED",!1),console.warn("TensorFlow.js deprecation warnings have been disabled.")}function Xe(t){i().getBool("DEPRECATION_WARNINGS_ENABLED")&&console.warn(t+" You can disable deprecation warnings with tf.disableDeprecationWarnings().")}function Ye(){Lt.disposeVariables()}function $e(){return Lt}function Qe(){return Lt.memory()}function Je(t){return Lt.profile(t)}function Ze(t,e){return Lt.tidy(t,e)}function tn(t){_t(t).forEach((function(t){return t.dispose()}))}function en(t){return Lt.keep(t)}function nn(t){return Lt.time(t)}function rn(t){return Lt.setBackend(t)}function on(){return Lt.ready()}function an(){return Lt.backendName}function sn(t){Lt.removeBackend(t)}function un(t){return Lt.findBackend(t)}function cn(t){return Lt.findBackendFactory(t)}function ln(t,e,n){return void 0===n&&(n=1),Lt.registerBackend(t,e,n)}function hn(){return Lt.backend}function fn(t,e){i().setPlatform(t,e)}function dn(){for(var t=[],e=0;e0,(function(){return"Element arr["+r.join("][")+"] should be a primitive, but is an array of "+e.length+" elements"})),C(e.length===n[0],(function(){return"Element arr["+r.join("][")+"] should have "+n[0]+" elements, but has "+e.length+" elements"}));for(var o=n.slice(1),a=0;a=0&&(o=r),vn(r,o,e,n),null==t||!V(t)&&!Array.isArray(t)&&"number"!=typeof t&&"boolean"!=typeof t&&"string"!=typeof t){var a=null==t?"null":t.constructor.name;throw new Error("Argument '"+e+"' passed to '"+n+"' must be a Tensor or TensorLike, but got '"+a+"'")}var s=pn(t,o);V(t)||Array.isArray(t)||(t=[t]);var u="string"!==o?Q(t,o,i().getBool("DEBUG")):I(t,[],!0);return Lt.makeTensor(u,s,o)}function mn(t,e,n,r){if(void 0===r&&(r="numeric"),!Array.isArray(t))throw new Error("Argument "+e+" passed to "+n+" must be a `Tensor[]` or `TensorLike[]`");return t.map((function(t,r){return gn(t,e+"["+r+"]",n)}),r)}function yn(t,e){for(var n=0;n=0&&e0})),He.registerFlag("WEBGL_VERSION",(function(){return Le(2)?2:Le(1)?1:0})),He.registerFlag("WEBGL_BUFFER_SUPPORTED",(function(){return 2===He.get("WEBGL_VERSION")})),He.registerFlag("WEBGL_CPU_FORWARD",(function(){return!0})),He.registerFlag("WEBGL_FORCE_F16_TEXTURES",(function(){return!1})),He.registerFlag("WEBGL_PACK",(function(){return He.getBool("HAS_WEBGL")})),He.registerFlag("WEBGL_PACK_NORMALIZATION",(function(){return He.getBool("WEBGL_PACK")})),He.registerFlag("WEBGL_PACK_CLIP",(function(){return He.getBool("WEBGL_PACK")})),He.registerFlag("WEBGL_PACK_DEPTHWISECONV",(function(){return!1})),He.registerFlag("WEBGL_PACK_BINARY_OPERATIONS",(function(){return He.getBool("WEBGL_PACK")})),He.registerFlag("WEBGL_PACK_UNARY_OPERATIONS",(function(){return He.getBool("WEBGL_PACK")})),He.registerFlag("WEBGL_PACK_ARRAY_OPERATIONS",(function(){return He.getBool("WEBGL_PACK")})),He.registerFlag("WEBGL_PACK_IMAGE_OPERATIONS",(function(){return He.getBool("WEBGL_PACK")})),He.registerFlag("WEBGL_PACK_REDUCE",(function(){return He.getBool("WEBGL_PACK")})),He.registerFlag("WEBGL_LAZILY_UNPACK",(function(){return He.getBool("WEBGL_PACK")})),He.registerFlag("WEBGL_CONV_IM2COL",(function(){return He.getBool("WEBGL_PACK")})),He.registerFlag("WEBGL_MAX_TEXTURE_SIZE",(function(){return Oe(He.getNumber("WEBGL_VERSION"))})),He.registerFlag("WEBGL_MAX_TEXTURES_IN_SHADER",(function(){return Me(He.getNumber("WEBGL_VERSION"))})),He.registerFlag("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION",(function(){var t=He.getNumber("WEBGL_VERSION");return 0===t?0:Be(t)})),He.registerFlag("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_RELIABLE",(function(){return He.getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0&&(t=navigator.userAgent||navigator.vendor||window.opera,!(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(t)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(t.substr(0,4))));var t})),He.registerFlag("WEBGL_RENDER_FLOAT32_CAPABLE",(function(){return We(He.getNumber("WEBGL_VERSION"))})),He.registerFlag("WEBGL_RENDER_FLOAT32_ENABLED",(function(){return!He.getBool("WEBGL_FORCE_F16_TEXTURES")&&He.getBool("WEBGL_RENDER_FLOAT32_CAPABLE")})),He.registerFlag("WEBGL_DOWNLOAD_FLOAT_ENABLED",(function(){return Ue(He.getNumber("WEBGL_VERSION"))})),He.registerFlag("WEBGL_FENCE_API_ENABLED",(function(){return ze(He.getNumber("WEBGL_VERSION"))})),He.registerFlag("WEBGL_SIZE_UPLOAD_UNIFORM",(function(){return He.getBool("WEBGL_RENDER_FLOAT32_ENABLED")?4:0})),bt=Xe;var Tn=An({complex_:function(t,e){var n=gn(t,"real","complex"),r=gn(e,"imag","complex");return E(n.shape,r.shape,"real and imag shapes, "+n.shape+" and "+r.shape+", must match in call to tf.complex()."),Lt.runKernelFunc((function(t){return t.complex(n,r)}),{$real:n,$imag:r})}}),Dn=An({real_:function(t){var e=gn(t,"input","real");return Lt.runKernelFunc((function(t){return t.real(e)}),{$input:e})}}),Nn=An({imag_:function(t){var e=gn(t,"input","imag");return Lt.runKernelFunc((function(t){return t.imag(e)}),{$input:e})}});function Fn(t,e,n){return _n(t,e,pn(t,n),n)}function _n(t,e,n,r){if(null==r&&(r=j(t)),"complex64"===r)throw new Error("Cannot construct a complex64 tensor directly. Please use tf.complex(real, imag).");if(!V(t)&&!Array.isArray(t)&&"number"!=typeof t&&"boolean"!=typeof t&&"string"!=typeof t)throw new Error("values passed to tensor(values) must be a number/boolean/string or an array of numbers/booleans/strings, or a TypedArray");if(null!=e){nt(e);var o=k(e),a=k(n);C(o===a,(function(){return"Based on the provided shape, ["+e+"], the tensor should have "+o+" values but has "+a}));for(var s=0;s1)return Gn([0],r);var o=tt(Math.abs(Math.ceil((e-t)/n)),r);e=1,(function(){return"Pass at least one tensor to concat"}));var n=mn(t,"tensors","concat");"complex64"===n[0].dtype&&n.forEach((function(t){if("complex64"!==t.dtype)throw new Error("Cannot concatenate complex64 tensors with a tensor\n with dtype "+t.dtype+". ")})),e=O(e,n[0].shape)[0];var r=Sn(n.map((function(t){return t.shape})),e);if(0===k(r))return Fn([],r);if(1===(n=n.filter((function(t){return t.size>0}))).length)return n[0];var o=n.map((function(t){return t.shape}));kn(o,e);var a=n,i={axis:e};return Lt.runKernelFunc((function(t){return t.concat(n,e)}),a,(function(t){var n=o.map((function(t){return t[e]}));return tr(t,n,e).map((function(t){return function(){return t}}))}),"Concat",i)}}),$n=An({concat1d_:function(t){return Yn(t,0)}}),Qn=An({concat2d_:function(t,e){return Yn(t,e)}}),Jn=An({concat3d_:function(t,e){return Yn(t,e)}}),Zn=An({concat4d_:function(t,e){return Yn(t,e)}}),tr=An({split_:function(t,e,n){void 0===n&&(n=0);var r,o=gn(t,"x","split");return n=O(n,o.shape)[0],"number"==typeof e?(C(o.shape[n]%e==0,(function(){return"Number of splits must evenly divide the axis."})),r=new Array(e).fill(o.shape[n]/e)):(C(o.shape[n]===e.reduce((function(t,e){return t+e})),(function(){return"The sum of sizes must match the size of the axis dimension."})),r=e),Lt.runKernelFunc((function(t){return t.split(o,r,n)}),{$x:o},(function(t){return{$x:function(){return Yn(t,n)}}}))}});function er(t,e,n){return void 0===e&&(e="float32"),e=e||"float32",nt(t),new mt(t,e,n)}function nr(t,e){void 0===e&&(e=!1),console.log(t.toString(e))}var rr=An({batchToSpaceND_:function(t,e,n){var r=gn(t,"x","batchToSpaceND"),o=e.reduce((function(t,e){return t*e}));return C(r.rank>=1+e.length,(function(){return"input rank is "+r.rank+" but should be > than blockShape.length "+e.length})),C(n.length===e.length,(function(){return"crops.length is "+n.length+" but should be equal to blockShape.length "+e.length})),C(r.shape[0]%o==0,(function(){return"input tensor batch is "+r.shape[0]+" but is not divisible by the product of the elements of blockShape "+e.join(" * ")+" === "+o})),Lt.runKernelFunc((function(t){return t.batchToSpaceND(r,e,n)}),{$x:r},(function(t){return{$x:function(){return t.spaceToBatchND(e,n)}}}))}}),or=An({cast_:function(t,e){var n=gn(t,"x","cast");if(!W(e))throw new Error("Failed to cast to unknown dtype "+e);if("string"===e&&"string"!==n.dtype||"string"!==e&&"string"===n.dtype)throw new Error("Only strings can be casted to strings");var r={dtype:e};return Lt.runKernelFunc((function(t){return t.cast(n,e)}),{x:n},(function(t){return{x:function(){return t.clone()}}}),"Cast",r)}}),ar=An({cumsum_:function(t,e,n,r){void 0===e&&(e=0),void 0===n&&(n=!1),void 0===r&&(r=!1);var o=gn(t,"x","cumsum"),a=En([e|=0],o.rank),i=o;null!=a&&(i=o.transpose(a));var s=In(1,o.rank)[0],u=Lt.runKernelFunc((function(t){return t.cumsum(i,s,n,r)}),{permutedX:i},(function(t){return{permutedX:function(){return t.cumsum(e,n,!r)}}}));return null!=a&&(u=u.transpose(a)),u}}),ir=An({depthToSpace_:function(t,e,n){void 0===n&&(n="NHWC");var r=gn(t,"x","depthToSpace"),o="NHWC"===n?r.shape[1]:r.shape[2],a="NHWC"===n?r.shape[2]:r.shape[3],i="NHWC"===n?r.shape[3]:r.shape[1];return C(o*e>=0,(function(){return"Negative dimension size caused by overflow when multiplying\n "+o+" and "+e+" for depthToSpace with input shape\n "+r.shape})),C(a*e>=0,(function(){return"Negative dimension size caused by overflow when multiplying\n "+a+" and "+e+" for depthToSpace with input shape\n "+r.shape})),C(i%(e*e)==0,(function(){return"Dimension size must be evenly divisible by "+e*e+" but is "+i+" for depthToSpace with input shape "+r.shape})),Lt.runKernelFunc((function(t){return t.depthToSpace(r,e,n)}),{$x:r})}}),sr=An({expandDims_:function(t,e){void 0===e&&(e=0);var n=gn(t,"x","expandDims",null);C(e<=n.rank,(function(){return"Axis must be <= rank of the tensor"}));var r=n.shape.slice();return e<0&&(C(-(n.rank+1)<=e,(function(){return"Axis must be in the interval ["+-(n.rank+1)+", "+n.rank+"]"})),e=n.rank+e+1),r.splice(e,0,1),ur(n,r)}}),ur=An({reshape_:function(t,e){var n=gn(t,"x","reshape",null);e=_(e,n.size),C(n.size===k(e),(function(){return"new shape and old shape must have the same number of elements."}));var r={shape:e};return Lt.runKernelFunc((function(t){return t.reshape(n,e)}),{x:n},(function(t){return{x:function(){return t.reshape(n.shape)}}}),"Reshape",r)}}),cr=An({spaceToBatchND_:function(t,e,n){var r=gn(t,"x","spaceToBatchND");return C(r.rank>=1+e.length,(function(){return"input rank "+r.rank+" should be > than [blockShape] "+e.length})),C(n.length===e.length,(function(){return"paddings.shape[0] "+n.length+" must be equal to [blockShape] "+e.length})),C(r.shape.reduce((function(t,r,o){return o>0&&o<=e.length?t&&(r+n[o-1][0]+n[o-1][1])%e[o-1]==0:t}),!0),(function(){return"input spatial dimensions "+r.shape.slice(1)+" with paddings "+n.toString()+" must be divisible by blockShapes "+e.toString()})),Lt.runKernelFunc((function(t){return t.spaceToBatchND(r,e,n)}),{$x:r},(function(t){return{$x:function(){return t.batchToSpaceND(e,n)}}}))}}),lr=An({squeeze_:function(t,e){var n=gn(t,"x","squeeze");return ur(n,M(n.shape,e).newShape)}}),hr=An({stack_:function(t,e){void 0===e&&(e=0);var n=mn(t,"tensors","stack");if(C(n.length>=1,(function(){return"Pass at least one tensor to tf.stack"})),1===n.length)return n[0].expandDims(e);var r=n[0].rank,o=n[0].shape,a=n[0].dtype;C(e<=r,(function(){return"Axis must be <= rank of the tensor"})),n.forEach((function(t){E(o,t.shape,"All tensors passed to stack must have matching shapes")})),n.forEach((function(t){C(a===t.dtype,(function(){return"All tensors passed to stack must have matching dtypes"}))}));var i=n.map((function(t){return t.expandDims(e)}));return Yn(i,e)}}),fr=An({unstack_:function(t,e){void 0===e&&(e=0),e=e||0;var n=gn(t,"x","unstack");C(e>=-n.shape.length&&e=2*e+1||o%2==1?i.push(o):a.push(o);r.push.apply(r,a),r.push(0),r.push.apply(r,i)}return r}function gr(t,e,n,r){void 0===r&&(r=!0);var o=[];r?o.push(t[0]/n):o.push(t[0]*n);for(var a=1;a1&&1===i&&r.unshift(a)}return r}function Br(t,e){for(var n=[],r=0;r1)&&n.unshift(a)}return n}function Pr(t,e){for(var n=[],r=Math.max(t.length,e.length),o=0;o0&&(o=o.sum(i)),o.reshape(n.shape)},$b:function(){var e=Or(n.square(),r.square()),o=no(t.mul(n.div(e))),i=Br(r.shape,a);return i.length>0&&(o=o.sum(i)),o.reshape(r.shape)}}}))}}),wo=An({divStrict_:function(t,e){var n=gn(t,"a","div"),r=gn(e,"b","div");return E(n.shape,r.shape,"Error in divideStrict: "),n.div(r)}}),Co=An({floorDiv_:function(t,e){var n,r=gn(t,"a","floorDiv"),o=gn(e,"b","floorDiv");n=Nt(r,o),r=n[0],o=n[1];var a=Pr(r.shape,o.shape);return Lt.runKernelFunc((function(t,e){var n=t.floorDiv(r,o);return e([r,o]),n}),{a:r,b:o},(function(t,e){var n=e[0],r=e[1];return{a:function(){var e=t.div(r.toFloat()),o=Br(n.shape,a);return o.length>0?e.sum(o).reshape(n.shape):e},b:function(){var e=t.mul(n.toFloat()),o=Br(r.shape,a);o.length>0&&(e=e.sum(o).reshape(r.shape));var i=r.square();return e.div(i.toFloat()).neg()}}}),"FloorDiv")}}),Eo=An({maximum_:function(t,e){var n,r=gn(t,"a","maximum"),o=gn(e,"b","maximum");return n=Nt(r,o),r=n[0],o=n[1],"bool"===r.dtype&&(r=r.toInt(),o=o.toInt()),Pr(r.shape,o.shape),Lt.runKernelFunc((function(t,e){var n=t.maximum(r,o);return e([r,o]),n}),{a:r,b:o},(function(t,e){var n=e[0],r=e[1];return{a:function(){return t.mul(n.greaterEqual(r).toFloat())},b:function(){return t.mul(n.less(r).toFloat())}}}),"Maximum")}}),Ro=An({maximumStrict_:function(t,e){var n=gn(t,"a","maximumStrict"),r=gn(e,"b","maximumStrict");return E(n.shape,r.shape,"Error in maximumStrict: "),n.maximum(r)}}),Io=An({minimum_:function(t,e){var n,r=gn(t,"a","minimum"),o=gn(e,"b","minimum");return n=Nt(r,o),r=n[0],o=n[1],"bool"===r.dtype&&(r=r.toInt(),o=o.toInt()),Pr(r.shape,o.shape),Lt.runKernelFunc((function(t,e){var n=t.minimum(r,o);return e([r,o]),n}),{a:r,b:o},(function(t,e){var n=e[0],r=e[1];return{a:function(){return t.mul(n.lessEqual(r).toFloat())},b:function(){return t.mul(n.greater(r).toFloat())}}}),"Minimum")}}),ko=An({minimumStrict_:function(t,e){var n=gn(t,"a","minimumStrict"),r=gn(e,"b","minimumStrict");return E(n.shape,r.shape,"Error in minimumStrict: "),n.minimum(r)}}),So=An({mod_:function(t,e){var n,r=gn(t,"a","mod"),o=gn(e,"b","mod");n=Nt(r,o),r=n[0],o=n[1];var a=Pr(r.shape,o.shape);return Lt.runKernelFunc((function(t,e){var n=t.mod(r,o);return e([r,o]),n}),{$a:r,$b:o},(function(t,e){var n=e[0],r=e[1];return{$a:function(){var e=Br(n.shape,a);return e.length>0?t.sum(e).reshape(n.shape):t},$b:function(){var e=t.mul(n.div(r).floor().neg()),o=Br(r.shape,a);return o.length>0?e.sum(o).reshape(r.shape):e}}}))}}),Ao=An({modStrict_:function(t,e){var n=gn(t,"a","modStrict"),r=gn(e,"b","modStrict");return E(n.shape,r.shape,"Error in modStrict: "),n.mod(r)}}),To=An({mul_:function(t,e){var n,r=gn(t,"a","mul"),o=gn(e,"b","mul");n=Nt(r,o),r=n[0],o=n[1];var a=Pr(r.shape,o.shape);return Lt.runKernelFunc((function(t,e){var n=t.multiply(r,o);return e([r,o]),n}),{a:r,b:o},(function(t,e){var n=e[0],r=e[1];return{a:function(){var e=t.mul(r.toFloat()),o=Br(n.shape,a);return o.length>0?e.sum(o).reshape(n.shape):e},b:function(){var e=t.mul(n.toFloat()),o=Br(r.shape,a);return o.length>0?e.sum(o).reshape(r.shape):e}}}),"Mul")}}),Do=An({mulStrict_:function(t,e){var n=gn(t,"a","mul"),r=gn(e,"b","mul");return E(n.shape,r.shape,"Error in multiplyStrict: "),n.mul(r)}}),No=An({pow_:function(t,e){var n,r=gn(t,"base","pow"),o=gn(e,"exp","pow");n=Nt(r,o),r=n[0],o=n[1];var a=Pr(r.shape,o.shape),i=[r,o];return Lt.runKernelFunc((function(t,e){var n=t.pow(r,o);return e([r,o,n]),n}),{a:r,b:o},(function(t,e){var n=e[0],r=e[1],o=e[2];return{a:function(){var e=r.toFloat(),o=t.mul(e.mul(n.pow(e.sub(On(1))))),i=Br(n.shape,a);return i.length>0&&(o=o.sum(i)),o.reshape(n.shape)},b:function(){var e=n.greater(0),i=n.log().where(e,Xn(n)),s=t.mul(o.mul(i)),u=Br(r.shape,a);return u.length>0&&(s=s.sum(u)),s.reshape(r.shape)}}}),"Pow",{},i,[!0])}}),Fo=An({powStrict_:function(t,e){return E(t.shape,e.shape,"Error in powStrict: "),t.pow(e)}}),_o=An({squaredDifferenceStrict_:function(t,e){var n=gn(t,"a","squaredDifferenceStrict"),r=gn(e,"b","squaredDifferenceStrict");return E(n.shape,r.shape,"Error in squaredDifferenceStrict: "),n.squaredDifference(r)}}),Oo=An({sub_:function(t,e){var n,r=gn(t,"a","sub"),o=gn(e,"b","sub");n=Nt(r,o),r=n[0],o=n[1];var a=Pr(r.shape,o.shape);return Lt.runKernelFunc((function(t){return t.subtract(r,o)}),{a:r,b:o},(function(t){return{a:function(){var e=t,n=Br(r.shape,a);return n.length>0&&(e=e.sum(n)),e.reshape(r.shape)},b:function(){var e=t,n=Br(o.shape,a);return n.length>0&&(e=e.sum(n)),e.neg().reshape(o.shape)}}}),"Sub")}}),Mo=An({subStrict_:function(t,e){var n=gn(t,"a","subStrict"),r=gn(e,"b","subStrict");return E(n.shape,r.shape,"Error in subStrict: "),n.sub(r)}});var Bo=An({div_:function(t,e){var n,r=gn(t,"a","div"),o=gn(e,"b","div");if(n=Nt(r,o),r=n[0],o=n[1],"int32"===r.dtype&&"int32"===o.dtype)return Co(r,o);var a={a:r,b:o};return Lt.runKernelFunc((function(t,e){var n=t.realDivide(r,o);return e([r,o]),n}),a,null,wr,{})}});function Po(t,e){if(t.rank<1)throw new Error("tf.gatherND() expects the input to be rank 1 or higher, but the rank was "+t.rank+".");if(e.rank<1)throw new Error("tf.gatherND() expects the indices to be rank 1 or higher, but the rank was "+e.rank+".");if("int32"!==e.dtype)throw new Error("tf.gatherND() expects the indices to be int32 type, but the dtype was "+e.dtype+".");if(e.shape[e.rank-1]>t.rank)throw new Error("index innermost dimension length must be <= tensor rank; saw: "+e.shape[e.rank-1]+" vs. "+t.rank);if(0===t.size)throw new Error("Requested more than 0 entries, but input is empty. Input shape: "+t.shape+".");for(var n=e.shape,r=n[n.length-1],o=1,a=0;a1?e.shape[e.rank-1]:1,o=e.rank>1?e.rank-1:1,a="Must have updates.shape = indices.shape[:batchDim] + shape[sliceDim:], got updates.shape: "+n.shape+", indices.shape: "+e.shape+", shape: "+t+", sliceDim: "+r+", and batchDim: "+o+".";if(n.rank1?e.shape[r-1]:1,a=n.length,i=1,s=o;s0;)1&t&&e.push(n),t/=2,n++;return e}function jo(t,e,n){for(var r=[],o=0;o0?Number.MIN_SAFE_INTEGER:Number.MAX_SAFE_INTEGER);var s=r[o];return a<0&&(a+=s),a=x(0,a,s-1)}function Yo(t,e,n,r,o){var a=e[o],i=n[o]||1;(t&1<0?Number.MAX_SAFE_INTEGER:Number.MIN_SAFE_INTEGER);var s=r[o];return a<0&&(a+=s),a=i>0?x(0,a,s):x(-1,a,s-1)}function $o(t,e,n){for(var r=n.length,o=0;o1){r=o;break}for(o=r+1;o0||n[o]!==t[o])return!1;return!0}function Qo(t,e){for(var n=t.length>0?t[t.length-1]:1,r=0;r0,(function(){return"variableGrads() expects at least one of the input variables to be trainable, but none of the "+a+" variables is trainable."}));var i=Lt.gradients(t,e,null,!0),s=i.value,u=i.grads;C(u.some((function(t){return null!=t})),(function(){return"Cannot find a connection between any variable and the result of the loss function y=f(x). Please make sure the operations that use variables are inside the function f passed to minimize()."})),C(0===s.rank,(function(){return"The f passed in variableGrads(f) must return a scalar, but it returned a rank-"+s.rank+" tensor"}));var c={};return e.forEach((function(t,e){null!=u[e]&&(c[t.name]=u[e])})),null!=o&&o.forEach((function(t){return c[t.name]=null})),{value:s,grads:c}}function oa(t){return Lt.customGrad(t)}function aa(t){if(t.filter((function(t){return null==t})).length>0)throw new Error("Cannot compute gradient of y=f(x) with respect to x. Make sure that\n the f you passed encloses all operations that lead from x to y.")}var ia=An({softmax_:function(t,e){void 0===e&&(e=-1);var n=gn(t,"logits","softmax","float32");if(-1===e&&(e=n.rank-1),e!==n.rank-1)throw Error("Softmax along a non-last dimension is not yet supported. Logits was rank "+n.rank+" and dim was "+e);return Lt.runKernelFunc((function(t,r){var o=t.softmax(n,e);return r([o]),o}),{logits:n},(function(t,n){var r=n[0],o=t.mul(r);return{logits:function(){return o.sub(o.sum([e],!0).mul(r))}}}),"Softmax",{dim:e},[],[!0])}}),sa=An({logSoftmax_:function(t,e){void 0===e&&(e=-1);var n=gn(t,"logits","logSoftmax");if(-1===e&&(e=n.rank-1),e!==n.rank-1)throw Error("Log Softmax along a non-last dimension is not yet supported. Logits was rank "+n.rank+" and axis was "+e);return oa((function(t,n){var r=t.max(e,!0),o=t.sub(r),a=o.toFloat().sub(o.exp().sum(e,!0).log());n([a]);return{value:a,gradFunc:function(t,n){var r=n[0].exp();return t.sub(t.sum(e,!0).mul(r))}}}))(n)}});var ua=An({transpose_:function(t,e){var n=gn(t,"x","transpose");if(null==e&&(e=n.shape.map((function(t,e){return e})).reverse()),C(n.rank===e.length,(function(){return"Error in transpose: rank of input "+n.rank+" must match length of perm "+e+"."})),e.forEach((function(t){C(t>=0&&t>>1)]);s>0?r=a+1:(o=a,i=!s)}return i?r:-r-1}(t,e,n||_a)}(t,e,n),o=r<0?-(r+1):r;t.splice(o,0,e)}function _a(t,e){return t>e?1:to})).sort(Wa),c=a>0?-.5/a:0,l=[],h=[];l.length0;){var f=u.pop(),d=f.score,p=f.boxIndex,v=f.suppressBeginIndex;if(d=v;--m){var y=Pa(t,p,l[m]);if(y>=r){g=!0;break}if(f.score=f.score*La(r,c,y),f.score<=o)break}f.suppressBeginIndex=l.length,g||(f.score===d?(l.push(p),h.push(f.score)):f.score>o&&Fa(u,f,Wa))}var x=l.length;return s&&(l.fill(0,x),h.fill(0,x)),{selectedIndices:Mn(l,"int32"),selectedScores:Mn(h,"float32"),numValidOutputs:On(x,"int32")}}function Pa(t,e,n){var r=t.subarray(4*e,4*e+4),o=t.subarray(4*n,4*n+4),a=Math.min(r[0],r[2]),i=Math.min(r[1],r[3]),s=Math.max(r[0],r[2]),u=Math.max(r[1],r[3]),c=Math.min(o[0],o[2]),l=Math.min(o[1],o[3]),h=Math.max(o[0],o[2]),f=Math.max(o[1],o[3]),d=(s-a)*(u-i),p=(h-c)*(f-l);if(d<=0||p<=0)return 0;var v=Math.max(a,c),g=Math.max(i,l),m=Math.min(s,h),y=Math.min(u,f),x=Math.max(m-v,0)*Math.max(y-g,0);return x/(d+p-x)}function La(t,e,n){var r=Math.exp(e*n*n);return n<=t?r:0}function Wa(t,e){return t.score-e.score||t.score===e.score&&e.boxIndex-t.boxIndex}function Ua(t,e,n){var r=new Array(t.rank).fill(0),o=t.shape.slice();return e.map((function(e){o[n]=e;var a=t.slice(r,o);return r[n]+=e,a}))}function Va(t,e){for(var n=new Array(t.rank),r=0;r":"<",u=n?"inOffset + i;":"round(getBestIndicesA(batch, inOffset + i));";this.userCode="\n void main() {\n ivec2 coords = getOutputCoords();\n int batch = coords[0];\n int outIdx = coords[1];\n int inOffset = outIdx * "+r+";\n\n int bestIndex = inOffset;\n float bestValue = getA(batch, bestIndex);\n\n for (int i = 0; i < "+r+"; i++) {\n int inIdx = "+u+";\n float candidate = getA(batch, inIdx);\n if (candidate "+s+" bestValue) {\n bestValue = candidate;\n bestIndex = inIdx;\n }\n }\n setOutput(float(bestIndex));\n }\n "};function ja(t,e){return["x","y","z","w","u","v"].slice(0,e).map((function(e){return t+"."+e}))}function Xa(t,e){return 1===e?[t]:ja(t,e)}function Ya(){var t,e,n,r,o,a,s,u,c,l;return 2===i().getNumber("WEBGL_VERSION")?(t="#version 300 es",e="in",n="out",r="in",o="texture",a="outputColor",s="out vec4 outputColor;",u="\n bool isnan_custom(float val) {\n return (val > 0.0 || val < 0.0) ? false : val != 0.0;\n }\n\n bvec4 isnan_custom(vec4 val) {\n return bvec4(isnan_custom(val.x),\n isnan_custom(val.y), isnan_custom(val.z), isnan_custom(val.w));\n }\n\n #define isnan(value) isnan_custom(value)\n ",c="",l="\n #define round(value) newRound(value)\n int newRound(float value) {\n return int(floor(value + 0.5));\n }\n\n ivec4 newRound(vec4 value) {\n return ivec4(floor(value + vec4(0.5)));\n }\n "):(t="",e="attribute",n="varying",r="varying",o="texture2D",a="gl_FragColor",s="",u="\n #define isnan(value) isnan_custom(value)\n bool isnan_custom(float val) {\n return (val > 0. || val < 1. || val == 0.) ? false : true;\n }\n bvec4 isnan_custom(vec4 val) {\n return bvec4(isnan(val.x), isnan(val.y), isnan(val.z), isnan(val.w));\n }\n ",c="\n uniform float INFINITY;\n\n bool isinf(float val) {\n return abs(val) == INFINITY;\n }\n bvec4 isinf(vec4 val) {\n return equal(abs(val), vec4(INFINITY));\n }\n ",l="\n int round(float value) {\n return int(floor(value + 0.5));\n }\n\n ivec4 round(vec4 value) {\n return ivec4(floor(value + vec4(0.5)));\n }\n "),{version:t,attribute:e,varyingVs:n,varyingFs:r,texture2D:o,output:a,defineOutput:s,defineSpecialNaN:u,defineSpecialInf:c,defineRound:l}}function $a(t,e,n){void 0===n&&(n="index");var r=$(e);return r.map((function(e,o){return"int "+t[o]+" = "+n+" / "+e+"; "+(o===r.length-1?"int "+t[o+1]+" = "+n+" - "+t[o]+" * "+e:"index -= "+t[o]+" * "+e)+";"})).join("")}function Qa(t){var e=$(t).map((function(t){return t.toString()}));return"\n int getFlatIndex(ivec3 coords) {\n return coords.x * "+e[0]+" + coords.y * "+e[1]+" + coords.z;\n }\n"}var Ja="\n const float FLOAT_MAX = 1.70141184e38;\n const float FLOAT_MIN = 1.17549435e-38;\n\n lowp vec4 encode_float(highp float v) {\n if (isnan(v)) {\n return vec4(255, 255, 255, 255);\n }\n\n highp float av = abs(v);\n\n if(av < FLOAT_MIN) {\n return vec4(0.0, 0.0, 0.0, 0.0);\n } else if(v > FLOAT_MAX) {\n return vec4(0.0, 0.0, 128.0, 127.0) / 255.0;\n } else if(v < -FLOAT_MAX) {\n return vec4(0.0, 0.0, 128.0, 255.0) / 255.0;\n }\n\n highp vec4 c = vec4(0,0,0,0);\n\n highp float e = floor(log2(av));\n highp float m = exp2(fract(log2(av))) - 1.0;\n\n c[2] = floor(128.0 * m);\n m -= c[2] / 128.0;\n c[1] = floor(32768.0 * m);\n m -= c[1] / 32768.0;\n c[0] = floor(8388608.0 * m);\n\n highp float ebias = e + 127.0;\n c[3] = floor(ebias / 2.0);\n ebias -= c[3] * 2.0;\n c[2] += floor(ebias) * 128.0;\n\n c[3] += 128.0 * step(0.0, -v);\n\n return c / 255.0;\n }\n";function Za(t,e,n,r){var o=[];t.forEach((function(t){var e=k(t.shapeInfo.logicalShape);t.shapeInfo.isUniform?o.push("uniform float "+t.name+(e>1?"["+e+"]":"")+";"):(o.push("uniform sampler2D "+t.name+";"),o.push("uniform int offset"+t.name+";"))}));var a,i,s=o.join("\n"),u=t.map((function(t){return function(t,e,n){void 0===n&&(n=!1);var r="";r+=n?ei(t):ti(t);var o=t.shapeInfo.logicalShape,a=e.logicalShape;o.length<=a.length&&(r+=n?function(t,e){var n,r=t.name,o=r.charAt(0).toUpperCase()+r.slice(1),a="get"+o+"AtOutCoords",i=t.shapeInfo.logicalShape.length,s=e.logicalShape.length,u=Mr(t.shapeInfo.logicalShape,e.logicalShape),c=ui(s),l=s-i,h=["x","y","z","w","u","v"];n=0===i?"":s<2&&u.length>=1?"coords = 0;":u.map((function(t){return"coords."+h[t+l]+" = 0;"})).join("\n");var f="";f=s<2&&i>0?"coords":t.shapeInfo.logicalShape.map((function(t,e){return"coords."+h[e+l]})).join(", ");var d="return outputValue;",p=1===k(t.shapeInfo.logicalShape),v=1===k(e.logicalShape);if(1!==i||p||v){if(p&&!v)d=1===s?"\n return vec4(outputValue.x, outputValue.x, 0., 0.);\n ":"\n return vec4(outputValue.x);\n ";else if(u.length){var g=i-2,m=i-1;u.indexOf(g)>-1&&u.indexOf(m)>-1?d="return vec4(outputValue.x);":u.indexOf(g)>-1?d="return vec4(outputValue.x, outputValue.y, outputValue.x, outputValue.y);":u.indexOf(m)>-1&&(d="return vec4(outputValue.xx, outputValue.zz);")}}else d="\n return vec4(outputValue.xy, outputValue.xy);\n ";return"\n vec4 "+a+"() {\n "+c+" coords = getOutputCoords();\n "+n+"\n vec4 outputValue = get"+o+"("+f+");\n "+d+"\n }\n "}(t,e):function(t,e){var n=t.name,r=n.charAt(0).toUpperCase()+n.slice(1),o="get"+r+"AtOutCoords",a=e.texShape,i=t.shapeInfo.texShape,s=t.shapeInfo.logicalShape.length,u=e.logicalShape.length;if(!t.shapeInfo.isUniform&&s===u&&null==t.shapeInfo.flatOffset&&S(i,a))return"\n float "+o+"() {\n return sampleTexture("+n+", resultUV);\n }\n ";var c,l=ui(u),h=Mr(t.shapeInfo.logicalShape,e.logicalShape),f=u-s,d=["x","y","z","w","u","v"];c=0===s?"":u<2&&h.length>=1?"coords = 0;":h.map((function(t){return"coords."+d[t+f]+" = 0;"})).join("\n");var p="";p=u<2&&s>0?"coords":t.shapeInfo.logicalShape.map((function(t,e){return"coords."+d[e+f]})).join(", ");return"\n float "+o+"() {\n "+l+" coords = getOutputCoords();\n "+c+"\n return get"+r+"("+p+");\n }\n "}(t,e));return r}(t,e,r)})).join("\n"),c=e.texShape,l=Ya(),h=function(t){return"\n float sampleTexture(sampler2D textureSampler, vec2 uv) {\n return "+t.texture2D+"(textureSampler, uv).r;\n }\n "}(l),f=function(t){return t.version+"\n precision highp float;\n precision highp int;\n precision highp sampler2D;\n "+t.varyingFs+" vec2 resultUV;\n "+t.defineOutput+"\n const vec2 halfCR = vec2(0.5, 0.5);\n\n struct ivec5\n {\n int x;\n int y;\n int z;\n int w;\n int u;\n };\n\n struct ivec6\n {\n int x;\n int y;\n int z;\n int w;\n int u;\n int v;\n };\n\n uniform float NAN;\n "+t.defineSpecialNaN+"\n "+t.defineSpecialInf+"\n "+t.defineRound+"\n\n int imod(int x, int y) {\n return x - y * (x / y);\n }\n\n int idiv(int a, int b, float sign) {\n int res = a / b;\n int mod = imod(a, b);\n if (sign < 0. && mod != 0) {\n res -= 1;\n }\n return res;\n }\n\n //Based on the work of Dave Hoskins\n //https://www.shadertoy.com/view/4djSRW\n #define HASHSCALE1 443.8975\n float random(float seed){\n vec2 p = resultUV * seed;\n vec3 p3 = fract(vec3(p.xyx) * HASHSCALE1);\n p3 += dot(p3, p3.yzx + 19.19);\n return fract((p3.x + p3.y) * p3.z);\n }\n\n "+ni+"\n "+ri+"\n "+oi+"\n "}(l);return e.isPacked?(a=function(t,e){switch(t.length){case 0:return"\n int getOutputCoords() {\n return 0;\n }\n ";case 1:return function(t,e){var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)];if(1===n[0])return"\n int getOutputCoords() {\n return 2 * int(resultUV.x * "+n[1]+".0);\n }\n ";if(1===n[1])return"\n int getOutputCoords() {\n return 2 * int(resultUV.y * "+n[0]+".0);\n }\n ";return"\n int getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+n[0]+", "+n[1]+"));\n return 2 * (resTexRC.x * "+n[1]+" + resTexRC.y);\n }\n "}(0,e);case 2:return function(t,e){var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)];if(S(t,e))return"\n ivec2 getOutputCoords() {\n return 2 * ivec2(resultUV.yx * vec2("+n[0]+", "+n[1]+"));\n }\n ";var r=Math.ceil(t[1]/2);return"\n ivec2 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+n[0]+", "+n[1]+"));\n\n int index = resTexRC.x * "+n[1]+" + resTexRC.y;\n int r = 2 * (index / "+r+");\n int c = imod(index, "+r+") * 2;\n\n return ivec2(r, c);\n }\n "}(t,e);case 3:return n=t,r=e,o=[Math.ceil(r[0]/2),Math.ceil(r[1]/2)],a=Math.ceil(n[2]/2),i=a*Math.ceil(n[1]/2),"\n ivec3 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+o[0]+", "+o[1]+"));\n int index = resTexRC.x * "+o[1]+" + resTexRC.y;\n\n int b = index / "+i+";\n index -= b * "+i+";\n\n int r = 2 * (index / "+a+");\n int c = imod(index, "+a+") * 2;\n\n return ivec3(b, r, c);\n }\n ";default:return function(t,e){for(var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)],r=Math.ceil(t[t.length-1]/2),o=r*Math.ceil(t[t.length-2]/2),a=o,i="",s="b, r, c",u=2;u2,(function(){return"Packed arg"+(n.charAt(0).toUpperCase()+n.slice(1))+" supports only inputs with rank above 2."}));var o=t[t.length-1],a=Math.ceil(o/e);this.outputShape=t.slice(0,-1),a>1&&this.outputShape.push(a),r||this.variableNames.push("bestIndicesA");var i,s,u=this.outputShape,c=u.length,l=ui(c),h=Xa("coords",c);if(1===a){var f=ui(s=c+1);i="\n "+f+" sourceLocR = "+f+"("+h.join()+", 0);\n ++"+h[c-1]+";\n "+f+" sourceLocG = "+f+"("+h.join()+", 0);\n ++"+h[c-2]+";\n "+f+" sourceLocA = "+f+"("+h.join()+", 0);\n --"+h[c-1]+";\n "+f+" sourceLocB = "+f+"("+h.join()+", 0);\n --"+h[c-2]+";"}else s=c,i="\n "+l+" sourceLocR = coords;\n ++"+h[c-1]+";\n "+l+" sourceLocG = coords;\n ++"+h[c-2]+";\n "+l+" sourceLocA = coords;\n --"+h[c-1]+";\n "+l+" sourceLocB = coords;\n --"+h[c-2]+";";var d=["x","y","z","w","u","v"].slice(0,s),p="."+d[s-1],v=d.map((function(t){return"int "+t})),g=Xa("sourceLocR",s-1).concat("inIdx.r"),m=Xa("sourceLocG",s-1).concat("inIdx.g"),y=Xa("sourceLocB",s-1).concat("inIdx.b"),x=Xa("sourceLocA",s-1).concat("inIdx.a"),b="max"===n?"greaterThan":"lessThan",w=r?"":"\n inIdx = round(vec4(getBestIndicesAChannel("+g.join()+"),\n getBestIndicesAChannel("+m.join()+"),\n getBestIndicesAChannel("+y.join()+"),\n getBestIndicesAChannel("+x.join()+")));",E="vec4(\n getAChannel("+g.join()+"),\n hasNextCol ? getAChannel("+m.join()+") : 0.,\n hasNextRow ? getAChannel("+y.join()+") : 0.,\n hasNextRow && hasNextCol ? getAChannel("+x.join()+") : 0.)",R=r?"":"\n float getBestIndicesAChannel("+v.join()+") {\n return getChannel(getBestIndicesA("+d.join()+"),\n vec2("+d.slice(-2).join()+"));\n }";this.userCode="\n float getAChannel("+v.join()+") {\n return getChannel(getA("+d.join()+"),\n vec2("+d.slice(-2).join()+"));\n }\n "+R+"\n void main() {\n "+l+" coords = getOutputCoords();\n bool hasNextCol = "+h[c-1]+" < "+(u[c-1]-1)+";\n bool hasNextRow = "+h[c-2]+" < "+(u[c-2]-1)+";\n "+i+"\n ivec4 srcIdx = ivec4(sourceLocR"+p+", sourceLocG"+p+",\n sourceLocB"+p+", sourceLocA"+p+") * "+e+";\n ivec4 inIdx = srcIdx;\n vec4 bestIndex = vec4(inIdx);\n vec4 bestValue = "+E+";\n\n for (int i = 0; i < "+e+"; i++) {\n inIdx = srcIdx;\n "+w+"\n vec4 candidate = "+E+";\n bvec4 nan = isnan(candidate);\n bvec4 replace = bvec4(\n vec4("+b+"(candidate, bestValue)) * (vec4(1.0) - vec4(nan)));\n\n bestValue = vec4(replace.x ? candidate.x : bestValue.x,\n replace.y ? candidate.y : bestValue.y,\n replace.z ? candidate.z : bestValue.z,\n replace.w ? candidate.w : bestValue.w);\n bestIndex = mix(bestIndex, vec4(inIdx), vec4(replace));\n srcIdx++;\n }\n setOutput(bestIndex);\n }\n "},fi=function(t){this.variableNames=["dy"],this.outputShape=t.inShape;var e=t.filterHeight,n=t.filterWidth,r=t.strideHeight,o=t.strideWidth,a=t.dilationHeight,i=t.dilationWidth,s=t.effectiveFilterHeight,u=t.effectiveFilterWidth,c=s-1-t.padInfo.top,l=u-1-t.padInfo.left,h=1/(e*n);this.userCode="\n const ivec2 pads = ivec2("+c+", "+l+");\n const float avgMultiplier = float("+h+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n\n ivec2 dyRCCorner = coords.yz - pads;\n int dyRCorner = dyRCCorner.x;\n int dyCCorner = dyRCCorner.y;\n\n // Convolve dy(?, ?, d) with pos mask(:, :, d) to get dx(xR, xC, d).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n for (int wR = 0; wR < "+s+";\n wR += "+a+") {\n float dyR = float(dyRCorner + wR) / "+r+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n for (int wC = 0; wC < "+u+";\n wC+= "+i+") {\n float dyC = float(dyCCorner + wC) / "+o+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n float dyValue = getDy(b, idyR, idyC, d);\n\n dotProd += dyValue * avgMultiplier;\n }\n }\n setOutput(dotProd);\n }\n "},di=function(t){this.variableNames=["dy"],this.outputShape=t.inShape;var e=t.filterDepth,n=t.filterHeight,r=t.filterWidth,o=t.strideDepth,a=t.strideHeight,i=t.strideWidth,s=t.dilationDepth,u=t.dilationHeight,c=t.dilationWidth,l=t.effectiveFilterDepth,h=t.effectiveFilterHeight,f=t.effectiveFilterWidth,d=l-1-t.padInfo.front,p=h-1-t.padInfo.top,v=f-1-t.padInfo.left,g=1/(e*n*r);this.userCode="\n const ivec3 pads = ivec3("+d+", "+p+", "+v+");\n const float avgMultiplier = float("+g+");\n\n void main() {\n ivec5 coords = getOutputCoords();\n int batch = coords.x;\n int ch = coords.u;\n\n ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;\n int dyDCorner = dyCorner.x;\n int dyRCorner = dyCorner.y;\n int dyCCorner = dyCorner.z;\n\n // Convolve dy(?, ?, ?, d) with pos mask(:, :, :, ch) to get\n // dx(xD, xR, xC, ch).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n\n for (int wD = 0; wD < "+l+";\n wD += "+s+") {\n float dyD = float(dyDCorner + wD) / "+o+".0;\n\n if (dyD < 0.0 || dyD >= "+t.outDepth+".0 || fract(dyD) > 0.0) {\n continue;\n }\n int idyD = int(dyD);\n\n for (int wR = 0; wR < "+h+";\n wR += "+u+") {\n float dyR = float(dyRCorner + wR) / "+a+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 ||\n fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n for (int wC = 0; wC < "+f+";\n wC += "+c+") {\n float dyC = float(dyCCorner + wC) / "+i+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n float dyValue = getDy(batch, idyD, idyR, idyC, ch);\n\n dotProd += dyValue * avgMultiplier;\n }\n }\n }\n setOutput(dotProd);\n }\n "},pi=function(t,e,n,r,o,a){this.outputShape=[],this.variableNames=["x","mean","variance"],Pr(t,e),Pr(t,n);var i="0.0";null!=r&&(Pr(t,r),this.variableNames.push("offset"),i="getOffsetAtOutCoords()");var s="1.0";null!=o&&(Pr(t,o),this.variableNames.push("scale"),s="getScaleAtOutCoords()"),this.outputShape=t,this.userCode="\n void main() {\n float x = getXAtOutCoords();\n float mean = getMeanAtOutCoords();\n float variance = getVarianceAtOutCoords();\n float offset = "+i+";\n float scale = "+s+";\n float inv = scale * inversesqrt(variance + float("+a+"));\n setOutput(dot(vec3(x, -mean, offset), vec3(inv, inv, 1)));\n }\n "},vi=function(t,e,n,r,o,a){this.packedInputs=!0,this.packedOutput=!0,this.variableNames=["x","mean","variance"],Pr(t,e),Pr(t,n);var i="vec4(0.0)";null!=r&&(Pr(t,r),this.variableNames.push("offset"),i="getOffsetAtOutCoords()");var s="vec4(1.0)";null!=o&&(Pr(t,o),this.variableNames.push("scale"),s="getScaleAtOutCoords()"),this.outputShape=t,this.userCode="\n void main() {\n vec4 offset = "+i+";\n vec4 scale = "+s+";\n\n vec4 x = getXAtOutCoords();\n vec4 mean = getMeanAtOutCoords();\n vec4 variance = getVarianceAtOutCoords();\n\n vec4 inv = scale * inversesqrt(variance + vec4("+a+"));\n\n setOutput((x - mean) * inv + offset);\n }\n "},gi="return areal * breal - aimag * bimag;",mi="return areal * bimag + aimag * breal;",yi=function(t,e,n){this.variableNames=["AReal","AImag","BReal","BImag"],this.outputShape=Pr(e,n),this.userCode="\n float binaryOpComplex(\n float areal, float aimag, float breal, float bimag) {\n "+t+"\n }\n\n void main() {\n float areal = getARealAtOutCoords();\n float aimag = getAImagAtOutCoords();\n float breal = getBRealAtOutCoords();\n float bimag = getBImagAtOutCoords();\n setOutput(binaryOpComplex(areal, aimag, breal, bimag));\n }\n "},xi="return a + b;",bi="return a - b;",wi="return a * b;",Ci="\nif (a == b) {\n return 1.0;\n};\nreturn a / b;",Ei="return (a < 0.) ? b * a : a;",Ri=function(t,e,n){this.variableNames=["A","B"],this.outputShape=Pr(e,n),this.userCode="\n float binaryOperation(float a, float b) {\n "+t+"\n }\n\n void main() {\n float a = getAAtOutCoords();\n float b = getBAtOutCoords();\n setOutput(binaryOperation(a, b));\n }\n "},Ii="\n // vec4 one = vec4(equal(a, b));\n // return one + (vec4(1.0) - one) * a / b;\n vec4 result = a / b;\n if(a.x == b.x) {\n result.x = 1.;\n }\n if(a.y == b.y) {\n result.y = 1.;\n }\n if(a.z == b.z) {\n result.z = 1.;\n }\n if(a.w == b.w) {\n result.w = 1.;\n }\n\n return result;\n",ki="\n vec4 aLessThanZero = vec4(lessThan(a, vec4(0.)));\n return (aLessThanZero * (b * a)) + ((vec4(1.0) - aLessThanZero) * a);\n",Si=function(t,e,n,r){void 0===r&&(r=!1),this.variableNames=["A","B"],this.supportsBroadcasting=!0,this.packedInputs=!0,this.packedOutput=!0,this.outputShape=Pr(e,n);var o=this.outputShape.length,a="";if(r)if(0===o||1===k(this.outputShape))a="\n result.y = 0.;\n result.z = 0.;\n result.w = 0.;\n ";else if(a="\n "+ui(o)+" coords = getOutputCoords();\n ",1===o)a+="\n result.y = (coords + 1) >= "+this.outputShape[0]+" ? 0. : result.y;\n result.z = 0.;\n result.w = 0.;\n ";else{var i=Xa("coords",o);a+="\n bool nextRowOutOfBounds =\n ("+i[o-2]+" + 1) >= "+this.outputShape[o-2]+";\n bool nextColOutOfBounds =\n ("+i[o-1]+" + 1) >= "+this.outputShape[o-1]+";\n result.y = nextColOutOfBounds ? 0. : result.y;\n result.z = nextRowOutOfBounds ? 0. : result.z;\n result.w = nextColOutOfBounds || nextRowOutOfBounds ? 0. : result.w;\n "}this.userCode="\n vec4 binaryOperation(vec4 a, vec4 b) {\n "+t+"\n }\n\n void main() {\n vec4 a = getAAtOutCoords();\n vec4 b = getBAtOutCoords();\n\n vec4 result = binaryOperation(a, b);\n "+a+"\n\n setOutput(result);\n }\n "},Ai=function(){function t(t){this.variableNames=["A"],this.outputShape=t,this.userCode="\n uniform float minVal;\n uniform float maxVal;\n\n void main() {\n float value = getAAtOutCoords();\n if (isnan(value)) {\n setOutput(value);\n return;\n }\n\n setOutput(clamp(value, minVal, maxVal));\n }\n "}return t.prototype.getCustomSetupFunc=function(t,e){var n=this;return function(r,o){null==n.minLoc&&(n.minLoc=r.getUniformLocationNoThrow(o,"minVal"),n.maxLoc=r.getUniformLocationNoThrow(o,"maxVal")),r.gl.uniform1f(n.minLoc,t),r.gl.uniform1f(n.maxLoc,e)}},t}(),Ti=function(){function t(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t,this.userCode="\n uniform float minVal;\n uniform float maxVal;\n\n void main() {\n vec4 value = getAAtOutCoords();\n\n if (any(isnan(value))) {\n setOutput(value);\n return;\n }\n\n setOutput(clamp(value, vec4(minVal), vec4(maxVal)));\n }\n "}return t.prototype.getCustomSetupFunc=function(t,e){var n=this;return function(r,o){null==n.minLoc&&(n.minLoc=r.getUniformLocationNoThrow(o,"minVal"),n.maxLoc=r.getUniformLocationNoThrow(o,"maxVal")),r.gl.uniform1f(n.minLoc,t),r.gl.uniform1f(n.maxLoc,e)}},t}(),Di=function(t){this.variableNames=["real","imag"],this.outputShape=t,this.userCode="\n void main() {\n float re = abs(getRealAtOutCoords());\n float im = abs(getImagAtOutCoords());\n float mx = max(re, im);\n\n // sadly the length function in glsl is not underflow-safe\n // (at least not on Intel GPUs). So the safe solution is\n // to ensure underflow-safety in all cases.\n setOutput(\n mx == 0.0 ? 0.0 : mx * length(vec2(1, min(re, im)/mx))\n );\n }\n "},Ni=function(t){this.outputShape=[],this.outputShape=Sn(t,1),this.variableNames=t.map((function(t,e){return"T"+e}));var e=new Array(t.length-1);e[0]=t[0][1];for(var n=1;n= "+s[u-1]+") {\n return getChannel(\n getT"+u+"("+_i(i,c,d)+"),\n vec2("+_i(l,c,d)+"));\n }"}var p=s.length,v=s[s.length-1];f+="\n return getChannel(\n getT"+p+"("+_i(i,c,v)+"),\n vec2("+_i(l,c,v)+"));",this.userCode="\n float getValue("+i.map((function(t){return"int "+t}))+") {\n "+f+"\n }\n\n void main() {\n "+o+" coords = getOutputCoords();\n vec4 result = vec4(getValue("+a+"), 0., 0., 0.);\n\n "+a[r-1]+" = "+a[r-1]+" + 1;\n if ("+a[r-1]+" < "+n[r-1]+") {\n result.g = getValue("+a+");\n }\n\n "+a[r-2]+" = "+a[r-2]+" + 1;\n if ("+a[r-2]+" < "+n[r-2]+") {\n result.a = getValue("+a+");\n }\n\n "+a[r-1]+" = "+a[r-1]+" - 1;\n if ("+a[r-2]+" < "+n[r-2]+" &&\n "+a[r-1]+" < "+n[r-1]+") {\n result.b = getValue("+a+");\n }\n setOutput(result);\n }\n "};function _i(t,e,n){var r=t.indexOf(e);return t.map((function(t,e){return e===r?t+" - "+n:t})).join()}var Oi=function(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;var e=t.strideHeight,n=t.strideWidth,r=t.padInfo.top,o=t.padInfo.left,a="channelsLast"===t.dataFormat;this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int wR = coords.x;\n int wC = coords.y;\n int d1 = coords.z;\n int d2 = coords.w;\n\n // Convolve x(?, ?, d1) with dy(:, :, d2) to get dw(wR, wC, d1, d2).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n\n for (int b = 0; b < "+t.batchSize+"; b++) {\n for (int yR = 0; yR < "+t.outHeight+"; yR++) {\n int xR = wR + yR * "+e+" - "+r+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int yC = 0; yC < "+t.outWidth+"; yC++) {\n int xC = wC + yC * "+n+" - "+o+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n if ("+a+") {\n float dyValue = getDy(b, yR, yC, d2);\n float xValue = getX(b, xR, xC, d1);\n dotProd += (xValue * dyValue);\n } else {\n float dyValue = getDy(b, d2, yR, yC);\n float xValue = getX(b, d1, xR, xC);\n dotProd += (xValue * dyValue);\n }\n\n }\n }\n }\n setOutput(dotProd);\n }\n "},Mi=function(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;var e=t.filterHeight,n=t.filterWidth,r=t.strideHeight,o=t.strideWidth,a="channelsLast"===t.dataFormat,i=e-1-t.padInfo.top,s=n-1-t.padInfo.left,u=a?1:2,c=a?2:3,l=a?3:1;this.userCode="\n const ivec2 pads = ivec2("+i+", "+s+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords[0];\n int d1 = coords["+l+"];\n\n ivec2 dyCorner = ivec2(coords["+u+"], coords["+c+"]) - pads;\n int dyRCorner = dyCorner.x;\n int dyCCorner = dyCorner.y;\n\n // Convolve dy(?, ?, d2) with w(:, :, d1, d2) to compute dx(xR, xC, d1).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n for (int wR = 0; wR < "+e+"; wR++) {\n float dyR = float(dyRCorner + wR) / "+r+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n int wRPerm = "+e+" - 1 - wR;\n\n for (int wC = 0; wC < "+n+"; wC++) {\n float dyC = float(dyCCorner + wC) / "+o+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n int wCPerm = "+n+" - 1 - wC;\n\n for (int d2 = 0; d2 < "+t.outChannels+"; d2++) {\n\n if ("+a+") {\n float xValue = getDy(batch, idyR, idyC, d2);\n float wValue = getW(wRPerm, wCPerm, d1, d2);\n dotProd += xValue * wValue;\n } else {\n float xValue = getDy(batch, d2, idyR, idyC);\n float wValue = getW(wRPerm, wCPerm, d1, d2);\n dotProd += xValue * wValue;\n }\n\n }\n }\n }\n setOutput(dotProd);\n }\n "},Bi=function(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;var e=t.strideDepth,n=t.strideHeight,r=t.strideWidth,o=t.padInfo.front,a=t.padInfo.top,i=t.padInfo.left;this.userCode="\n void main() {\n ivec5 coords = getOutputCoords();\n int wF = coords.x;\n int wR = coords.y;\n int wC = coords.z;\n int d1 = coords.w;\n int d2 = coords.u;\n\n float dotProd = 0.0;\n\n for (int b = 0; b < "+t.batchSize+"; b++) {\n for (int yF = 0; yF < "+t.outDepth+"; yF++) {\n int xF = wF + yF * "+e+" - "+o+";\n\n if (xF < 0 || xF >= "+t.inDepth+") {\n continue;\n }\n\n for (int yR = 0; yR < "+t.outHeight+"; yR++) {\n int xR = wR + yR * "+n+" - "+a+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int yC = 0; yC < "+t.outWidth+"; yC++) {\n int xC = wC + yC * "+r+" - "+i+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n float dyValue = getDy(b, yF, yR, yC, d2);\n float xValue = getX(b, xF, xR, xC, d1);\n dotProd += (xValue * dyValue);\n }\n }\n }\n }\n setOutput(dotProd);\n }\n "},Pi=function(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;var e=t.filterDepth,n=t.filterHeight,r=t.filterWidth,o=t.strideDepth,a=t.strideHeight,i=t.strideWidth,s=e-1-t.padInfo.front,u=n-1-t.padInfo.top,c=r-1-t.padInfo.left;this.userCode="\n const ivec3 pads = ivec3("+s+", "+u+", "+c+");\n\n void main() {\n ivec5 coords = getOutputCoords();\n int batch = coords.x;\n int d1 = coords.u;\n\n\n ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;\n int dyFCorner = dyCorner.x;\n int dyRCorner = dyCorner.y;\n int dyCCorner = dyCorner.z;\n\n float dotProd = 0.0;\n for (int wF = 0; wF < "+e+"; wF++) {\n float dyF = float(dyFCorner + wF) / "+o+".0;\n\n if (dyF < 0.0 || dyF >= "+t.outDepth+".0 || fract(dyF) > 0.0) {\n continue;\n }\n int idyF = int(dyF);\n\n int wFPerm = "+e+" - 1 - wF;\n\n for (int wR = 0; wR < "+n+"; wR++) {\n float dyR = float(dyRCorner + wR) / "+a+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 ||\n fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n int wRPerm = "+n+" - 1 - wR;\n\n for (int wC = 0; wC < "+r+"; wC++) {\n float dyC = float(dyCCorner + wC) / "+i+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n int wCPerm = "+r+" - 1 - wC;\n\n for (int d2 = 0; d2 < "+t.outChannels+"; d2++) {\n float xValue = getDy(batch, idyF, idyR, idyC, d2);\n float wValue = getW(wFPerm, wRPerm, wCPerm, d1, d2);\n dotProd += xValue * wValue;\n }\n }\n }\n }\n setOutput(dotProd);\n }\n "},Li=function(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;var e=t.strideHeight,n=t.strideWidth,r=t.padInfo.top,o=t.padInfo.left,a=t.outChannels/t.inChannels;this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int wR = coords.x;\n int wC = coords.y;\n int d1 = coords.z;\n int dm = coords.w;\n int d2 = d1 * "+a+" + dm;\n\n float dotProd = 0.0;\n\n // TO DO: Vec4 over the batch size\n for (int b = 0; b < "+t.batchSize+"; b++) {\n for (int yR = 0; yR < "+t.outHeight+"; yR++) {\n int xR = wR + yR * "+e+" - "+r+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int yC = 0; yC < "+t.outWidth+"; yC++) {\n int xC = wC + yC * "+n+" - "+o+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n float dyValue = getDy(b, yR, yC, d2);\n float xValue = getX(b, xR, xC, d1);\n dotProd += (xValue * dyValue);\n }\n }\n }\n setOutput(dotProd);\n }\n "},Wi=function(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;var e=t.filterHeight,n=t.filterWidth,r=t.strideHeight,o=t.strideWidth,a=e-1-t.padInfo.top,i=n-1-t.padInfo.left,s=t.outChannels/t.inChannels;this.userCode="\n const ivec2 pads = ivec2("+a+", "+i+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords[0];\n int d1 = coords[3];\n ivec2 dyCorner = coords.yz - pads;\n int dyRCorner = dyCorner.x;\n int dyCCorner = dyCorner.y;\n\n float dotProd = 0.0;\n\n for (int wR = 0; wR < "+e+"; wR++) {\n float dyR = float(dyRCorner + wR) / "+r+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n int wRPerm = "+e+" - 1 - wR;\n\n for (int wC = 0; wC < "+n+"; wC++) {\n float dyC = float(dyCCorner + wC) / "+o+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n int wCPerm = "+n+" - 1 - wC;\n\n // TO DO: Vec4 over the channelMul\n for (int dm = 0; dm < "+s+"; dm++) {\n int d2 = d1 * "+s+" + dm;\n float xValue = getDy(batch, idyR, idyC, d2);\n float wValue = getW(wRPerm, wCPerm, d1, dm);\n dotProd += xValue * wValue;\n }\n }\n }\n setOutput(dotProd);\n }\n "},Ui=function(t,e,n,r){void 0===e&&(e=!1),void 0===n&&(n=null),void 0===r&&(r=!1),this.variableNames=["x","W"],this.outputShape=t.outShape;var o=t.padInfo.top,a=t.padInfo.left,i=t.strideHeight,s=t.strideWidth,u=t.dilationHeight,c=t.dilationWidth,l=t.filterHeight,h=t.filterWidth,f=4*Math.floor(t.inChannels/4),d=t.inChannels%4,p="channelsLast"===t.dataFormat,v=p?1:2,g=p?2:3,m=p?3:1,y="",x="";n&&(y=r?"float activation(float a) {\n float b = getPreluActivationWeightsAtOutCoords();\n "+n+"\n }":"\n float activation(float x) {\n "+n+"\n }\n ",x="result = activation(result);");var b=e?"result += getBiasAtOutCoords();":"";e&&this.variableNames.push("bias"),r&&this.variableNames.push("preluActivationWeights"),this.userCode="\n "+y+"\n\n const ivec2 strides = ivec2("+i+", "+s+");\n const ivec2 pads = ivec2("+o+", "+a+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords[0];\n int d2 = coords["+m+"];\n\n ivec2 xRCCorner =\n ivec2(coords["+v+"], coords["+g+"]) * strides - pads;\n int xRCorner = xRCCorner.x;\n int xCCorner = xRCCorner.y;\n\n // Convolve x(?, ?, d1) with w(:, :, d1, d2) to get y(yR, yC, d2).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n for (int wR = 0; wR < "+l+"; wR++) {\n int xR = xRCorner + wR * "+u+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+h+"; wC++) {\n int xC = xCCorner + wC * "+c+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n for (int d1 = 0; d1 < "+f+"; d1 += 4) {\n vec4 wValues = vec4(\n getW(wR, wC, d1, d2),\n getW(wR, wC, d1 + 1, d2),\n getW(wR, wC, d1 + 2, d2),\n getW(wR, wC, d1 + 3, d2)\n );\n\n if ("+p+") {\n vec4 xValues = vec4(\n getX(batch, xR, xC, d1),\n getX(batch, xR, xC, d1 + 1),\n getX(batch, xR, xC, d1 + 2),\n getX(batch, xR, xC, d1 + 3)\n );\n dotProd += dot(xValues, wValues);\n } else {\n vec4 xValues = vec4(\n getX(batch, d1, xR, xC),\n getX(batch, d1 + 1, xR, xC),\n getX(batch, d1 + 2, xR, xC),\n getX(batch, d1 + 3, xR, xC)\n );\n dotProd += dot(xValues, wValues);\n }\n }\n\n if ("+(1===d)+") {\n\n if ("+p+") {\n dotProd +=\n getX(batch, xR, xC, "+f+") *\n getW(wR, wC, "+f+", d2);\n } else {\n dotProd +=\n getX(batch, "+f+", xR, xC) *\n getW(wR, wC, "+f+", d2);\n }\n\n } else if ("+(2===d)+") {\n vec2 wValues = vec2(\n getW(wR, wC, "+f+", d2),\n getW(wR, wC, "+f+" + 1, d2)\n );\n\n if ("+p+") {\n vec2 xValues = vec2(\n getX(batch, xR, xC, "+f+"),\n getX(batch, xR, xC, "+f+" + 1)\n );\n dotProd += dot(xValues, wValues);\n } else {\n vec2 xValues = vec2(\n getX(batch, "+f+", xR, xC),\n getX(batch, "+f+" + 1, xR, xC)\n );\n dotProd += dot(xValues, wValues);\n }\n\n } else if ("+(3===d)+") {\n vec3 wValues = vec3(\n getW(wR, wC, "+f+", d2),\n getW(wR, wC, "+f+" + 1, d2),\n getW(wR, wC, "+f+" + 2, d2)\n );\n\n if ("+p+") {\n vec3 xValues = vec3(\n getX(batch, xR, xC, "+f+"),\n getX(batch, xR, xC, "+f+" + 1),\n getX(batch, xR, xC, "+f+" + 2)\n );\n dotProd += dot(xValues, wValues);\n } else {\n vec3 xValues = vec3(\n getX(batch, "+f+", xR, xC),\n getX(batch, "+f+" + 1, xR, xC),\n getX(batch, "+f+" + 2, xR, xC)\n );\n dotProd += dot(xValues, wValues);\n }\n\n }\n }\n }\n\n float result = dotProd;\n "+b+"\n "+x+"\n setOutput(result);\n }\n "},Vi=function(t){this.variableNames=["x","W"],this.outputShape=t.outShape;var e=t.padInfo.front,n=t.padInfo.top,r=t.padInfo.left,o=t.strideDepth,a=t.strideHeight,i=t.strideWidth,s=t.dilationDepth,u=t.dilationHeight,c=t.dilationWidth,l=t.filterDepth,h=t.filterHeight,f=t.filterWidth,d=4*Math.floor(t.inChannels/4),p=t.inChannels%4;this.userCode="\n const ivec3 strides = ivec3("+o+", "+a+", "+i+");\n const ivec3 pads = ivec3("+e+", "+n+", "+r+");\n\n void main() {\n ivec5 coords = getOutputCoords();\n int batch = coords.x;\n int d2 = coords.u;\n\n ivec3 xFRCCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;\n int xFCorner = xFRCCorner.x;\n int xRCorner = xFRCCorner.y;\n int xCCorner = xFRCCorner.z;\n\n // Convolve x(?, ?, ?, d1) with w(:, :, :, d1, d2) to get\n // y(yF, yR, yC, d2). ? = to be determined. : = across all\n // values in that axis.\n float dotProd = 0.0;\n for (int wF = 0; wF < "+l+"; wF++) {\n int xF = xFCorner + wF * "+s+";\n\n if (xF < 0 || xF >= "+t.inDepth+") {\n continue;\n }\n\n for (int wR = 0; wR < "+h+"; wR++) {\n int xR = xRCorner + wR * "+u+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+f+"; wC++) {\n int xC = xCCorner + wC * "+c+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n for (int d1 = 0; d1 < "+d+"; d1 += 4) {\n vec4 xValues = vec4(\n getX(batch, xF, xR, xC, d1),\n getX(batch, xF, xR, xC, d1 + 1),\n getX(batch, xF, xR, xC, d1 + 2),\n getX(batch, xF, xR, xC, d1 + 3)\n );\n vec4 wValues = vec4(\n getW(wF, wR, wC, d1, d2),\n getW(wF, wR, wC, d1 + 1, d2),\n getW(wF, wR, wC, d1 + 2, d2),\n getW(wF, wR, wC, d1 + 3, d2)\n );\n\n dotProd += dot(xValues, wValues);\n }\n\n if ("+(1===p)+") {\n dotProd +=\n getX(batch, xF, xR, xC, "+d+") *\n getW(wF, wR, wC, "+d+", d2);\n } else if ("+(2===p)+") {\n vec2 xValues = vec2(\n getX(batch, xF, xR, xC, "+d+"),\n getX(batch, xF, xR, xC, "+d+" + 1)\n );\n vec2 wValues = vec2(\n getW(wF, wR, wC, "+d+", d2),\n getW(wF, wR, wC, "+d+" + 1, d2)\n );\n dotProd += dot(xValues, wValues);\n } else if ("+(3===p)+") {\n vec3 xValues = vec3(\n getX(batch, xF, xR, xC, "+d+"),\n getX(batch, xF, xR, xC, "+d+" + 1),\n getX(batch, xF, xR, xC, "+d+" + 2)\n );\n vec3 wValues = vec3(\n getW(wF, wR, wC, "+d+", d2),\n getW(wF, wR, wC, "+d+" + 1, d2),\n getW(wF, wR, wC, "+d+" + 2, d2)\n );\n dotProd += dot(xValues, wValues);\n }\n }\n }\n }\n setOutput(dotProd);\n }\n "},zi=function(t,e,n,r){void 0===e&&(e=!1),void 0===n&&(n=null),void 0===r&&(r=!1),this.variableNames=["x","W"],this.outputShape=t.outShape;var o=t.inHeight,a=t.inWidth,i=t.padInfo.top,s=t.padInfo.left,u=t.strideHeight,c=t.strideWidth,l=t.dilationHeight,h=t.dilationWidth,f=t.filterHeight,d=t.filterWidth,p=t.outChannels/t.inChannels,v="",g="";n&&(v=r?"float activation(float a) {\n float b = getPreluActivationWeightsAtOutCoords();\n "+n+"\n }":"\n float activation(float x) {\n "+n+"\n }\n ",g="result = activation(result);");var m=e?"result += getBiasAtOutCoords();":"";e&&this.variableNames.push("bias"),r&&this.variableNames.push("preluActivationWeights"),this.userCode="\n "+v+"\n\n const ivec2 strides = ivec2("+u+", "+c+");\n const ivec2 pads = ivec2("+i+", "+s+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords.x;\n ivec2 xRCCorner = coords.yz * strides - pads;\n int d2 = coords.w;\n int d1 = d2 / "+p+";\n int q = d2 - d1 * "+p+";\n\n int xRCorner = xRCCorner.x;\n int xCCorner = xRCCorner.y;\n\n // Convolve x(?, ?, d1) with w(:, :, d1, q) to get y(yR, yC, d2).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n // TO DO(dsmilkov): Flatten the two for loops and vec4 the operations.\n for (int wR = 0; wR < "+f+"; wR++) {\n int xR = xRCorner + wR * "+l+";\n\n if (xR < 0 || xR >= "+o+") {\n continue;\n }\n\n for (int wC = 0; wC < "+d+"; wC++) {\n int xC = xCCorner + wC * "+h+";\n\n if (xC < 0 || xC >= "+a+") {\n continue;\n }\n\n float xVal = getX(batch, xR, xC, d1);\n float wVal = getW(wR, wC, d1, q);\n dotProd += xVal * wVal;\n }\n }\n\n float result = dotProd;\n "+m+"\n "+g+"\n setOutput(result);\n }\n "},Gi=function(t,e,n,r){void 0===e&&(e=!1),void 0===n&&(n=null),void 0===r&&(r=!1),this.variableNames=["x","W"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t.outShape;for(var o=t.inHeight,a=t.inWidth,i=t.padInfo.top,s=t.padInfo.left,u=t.strideHeight,c=t.strideWidth,l=t.dilationHeight,h=t.dilationWidth,f=t.filterHeight,d=t.filterWidth,p=d,v="int xR; int xC; int xCOffset;",g=0;g= 0 && xR < "+o+" && xCOffset >= 0 && xCOffset < "+a+") {\n xTexelR"+g+"C"+m+" = getX(batch, xR, xCOffset, d1);\n\n // Need to manually clear unused channels in case\n // we're reading from recycled texture.\n if(xCOffset + 1 >= "+a+") {\n xTexelR"+g+"C"+m+".zw = vec2(0.);\n }\n } else {\n xTexelR"+g+"C"+m+" = vec4(0.);\n }\n\n xCOffset = xC + 1 - 2;\n if(xR >= 0 && xR < "+o+" && xCOffset >= 0 && xCOffset < "+a+") {\n vec4 previous = getX(batch, xR, xCOffset, d1);\n\n // Need to manually clear unused channels in case\n // we're reading from recycled texture.\n if(xCOffset + 1 >= "+a+") {\n previous.zw = vec2(0.);\n }\n\n xR"+g+"C"+m+" = vec4(previous.zw, xTexelR"+g+"C"+m+".xy);\n } else {\n xR"+g+"C"+m+" = vec4(0, 0, xTexelR"+g+"C"+m+".xy);\n }\n ":"\n if(xR >= 0 && xR < "+o+" && xC >= 0 && xC < "+a+") {\n xTexelR"+g+"C"+m+" = getX(batch, xR, xC, d1);\n } else {\n xTexelR"+g+"C"+m+" = vec4(0.);\n }\n\n xR"+g+"C"+m+" = xTexelR"+g+"C"+m+";\n ",m+1= 0 && xR < "+o+" &&\n xCOffset >= 0 && xCOffset < "+a+") {\n xTexelR"+g+"C"+(m+2)+" = getX(batch, xR, xCOffset, d1);\n }\n ",h>1&&(v+="\n xCOffset -= 2;\n if(xR >= 0 && xR < "+o+" &&\n xCOffset >= 0 && xCOffset < "+a+") {\n xTexelR"+g+"C"+m+" = getX(batch, xR, xCOffset, d1);\n } else {\n xTexelR"+g+"C"+m+" = vec4(0.);\n }\n "),v+="\n xR"+g+"C"+(m+1)+" = vec4(\n xTexelR"+g+"C"+m+".zw, xTexelR"+g+"C"+(m+2)+".xy);\n "):v+="\n xCOffset = xC + "+x+";\n\n if(xR >= 0 && xR < "+o+" &&\n xCOffset >= 0 && xCOffset < "+a+") {\n xTexelR"+g+"C"+(m+2)+" = getX(batch, xR, xCOffset, d1);\n }\n\n xR"+g+"C"+(m+1)+" = xTexelR"+g+"C"+(m+2)+";\n "}}else m= 0 && xR < "+o+") {\n ",s%2==1?(v+="\n xCOffset = xC + 1 - "+c+";\n if(xCOffset >= 0 && xCOffset < "+a+") {\n xTexelR"+g+"C"+m+" = getX(batch, xR, xCOffset, d1);\n } else {\n xTexelR"+g+"C"+m+" = vec4(0.);\n }\n\n if(xC + 1 >= 0 && xC + 1 < "+a+") {\n xTexelR"+g+"C"+(m+2)+" = getX(batch, xR, xC + 1, d1);\n } else {\n xTexelR"+g+"C"+(m+2)+" = vec4(0.);\n }\n\n xR"+g+"C"+m+" = vec4(\n xTexelR"+g+"C"+m+".zw, xTexelR"+g+"C"+(m+2)+".zw);\n ",m+1= 0 && xCOffset < "+a+") {\n final = getX(batch, xR, xCOffset, d1);\n }\n xR"+g+"C"+(m+1)+" = vec4(xTexelR"+g+"C"+(m+2)+".xy, final.xy);\n ")):(v+="\n if(xC >= 0 && xC < "+a+") {\n xTexelR"+g+"C"+m+" = getX(batch, xR, xC, d1);\n } else {\n xTexelR"+g+"C"+m+" = vec4(0.);\n }\n\n xCOffset = xC + "+c+";\n if(xCOffset >= 0 && xCOffset < "+a+") {\n xTexelR"+g+"C"+(m+2)+" = getX(batch, xR, xCOffset, d1);\n } else {\n xTexelR"+g+"C"+(m+2)+" = vec4(0.);\n }\n\n xR"+g+"C"+m+" = vec4(\n xTexelR"+g+"C"+m+".xy, xTexelR"+g+"C"+(m+2)+".xy);\n ",m+11?[""+(i-1)/(l-1),"(y2-y1) * height_ratio","y1*"+p+" + float(y)*(height_scale)"]:["0.0","0.0","0.5 * (y1+y2) * "+p],m=g[0],y=g[1],x=g[2],b=h>1?[""+(s-1)/(h-1),"(x2-x1) * width_ratio","x1*"+v+" + float(x)*(width_scale)"]:["0.0","0.0","0.5 * (x1+x2) * "+v],w=b[0],C=b[1],E=b[2];this.userCode="\n const float height_ratio = float("+m+");\n const float width_ratio = float("+w+");\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int y = coords[1];\n int x = coords[2];\n int d = coords[3];\n\n // get box vals\n float y1 = getBoxes(b,0);\n float x1 = getBoxes(b,1);\n float y2 = getBoxes(b,2);\n float x2 = getBoxes(b,3);\n\n // get image in batch index\n int bInd = round(getBoxInd(b));\n if(bInd < 0 || bInd >= "+a+") {\n return;\n }\n\n float height_scale = "+y+";\n float width_scale = "+C+";\n\n float in_y = "+x+";\n if( in_y < 0.0 || in_y > "+p+" ) {\n setOutput(float("+o+"));\n return;\n }\n float in_x = "+E+";\n if( in_x < 0.0 || in_x > "+v+" ) {\n setOutput(float("+o+"));\n return;\n }\n\n vec2 sourceFracIndexCR = vec2(in_x,in_y);\n if("+f+" == 1) {\n // Compute the four integer indices.\n ivec2 sourceFloorCR = ivec2(sourceFracIndexCR);\n ivec2 sourceCeilCR = ivec2(ceil(sourceFracIndexCR));\n\n float topLeft = getImage(b, sourceFloorCR.y, sourceFloorCR.x, d);\n float bottomLeft = getImage(b, sourceCeilCR.y, sourceFloorCR.x, d);\n float topRight = getImage(b, sourceFloorCR.y, sourceCeilCR.x, d);\n float bottomRight = getImage(b, sourceCeilCR.y, sourceCeilCR.x, d);\n\n vec2 fracCR = sourceFracIndexCR - vec2(sourceFloorCR);\n\n float top = topLeft + (topRight - topLeft) * fracCR.x;\n float bottom = bottomLeft + (bottomRight - bottomLeft) * fracCR.x;\n float newValue = top + (bottom - top) * fracCR.y;\n setOutput(newValue);\n } else {\n // Compute the coordinators of nearest neighbor point.\n ivec2 sourceNearestCR = ivec2(floor(\n sourceFracIndexCR + vec2(0.5,0.5)));\n float newValue = getImage(b, sourceNearestCR.y, sourceNearestCR.x, d);\n setOutput(newValue);\n }\n }\n "},qi=function(t,e,n){this.variableNames=["x"],this.outputShape=t;var r=t.length,o=t[t.length-1],a=n?"<":">";this.userCode="\n int getIndex(int i) {\n "+(n?"return "+o+" -i - 1;":"return i;")+"\n }\n\n void main() {\n "+ui(r)+" coords = getOutputCoords();\n int end = "+Ki(r,"coords")+";\n float val = 0.0;\n for (int i = "+o+" - 1; i >= 0; i -= 1) {\n int idx = getIndex(i);\n if (idx "+a+" end) {\n continue;\n }\n if (idx == end && "+e+") {\n continue;\n }\n "+Ki(r,"coords")+" = idx;\n val += getX("+function(t,e){if(1===t)return""+e;if(2===t)return e+".x, "+e+".y";if(3===t)return e+".x, "+e+".y, "+e+".z";if(4===t)return e+".x, "+e+".y, "+e+".z, "+e+".w";throw Error("Cumulative sum for rank "+t+" is not yet supported")}(r,"coords")+");\n }\n setOutput(val);\n }\n "};function Ki(t,e){if(1===t)return""+e;if(2===t)return e+".y";if(3===t)return e+".z";if(4===t)return e+".w";throw Error("Cumulative sum for rank "+t+" is not yet supported")}var ji=function(t){this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0,this.outPackingScheme=Vt.DENSE;var e=Yt(t),n=Ya();this.outputShape=t,this.userCode="\n ivec3 outCoordsFromFlatIndex(int index) {\n "+$a(["r","c","d"],t)+"\n return ivec3(r, c, d);\n }\n\n void main() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+e[0]+", "+e[1]+"));\n int index = 4 * (resTexRC.x * "+e[1]+" + resTexRC.y);\n\n vec4 result = vec4(0.);\n\n for (int i=0; i<4; i++) {\n int flatIndex = index + i;\n ivec3 rc = outCoordsFromFlatIndex(flatIndex);\n result[i] = getA(rc.x, rc.y, rc.z);\n }\n\n "+n.output+" = result;\n }\n "},Xi=function(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outPackingScheme=Vt.DENSE;var e=Yt(t),n=Ya();this.outputShape=t,this.userCode="\n ivec3 outCoordsFromFlatIndex(int index) {\n "+$a(["r","c","d"],t)+"\n return ivec3(r, c, d);\n }\n\n void main() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+e[0]+", "+e[1]+"));\n int index = 4 * (resTexRC.x * "+e[1]+" + resTexRC.y);\n\n vec4 result = vec4(0.);\n\n for (int i=0; i<4; i++) {\n int flatIndex = index + i;\n ivec3 rc = outCoordsFromFlatIndex(flatIndex);\n result[i] = getChannel(getA(rc.x, rc.y, rc.z), vec2(rc.y, rc.z));\n }\n\n "+n.output+" = result;\n }\n "},Yi=function(){function t(t,e,n){this.variableNames=["x"],this.outputShape=[],this.outputShape=t,this.blockSize=e,this.dataFormat=n,this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int h = "+this.getHeightCoordString()+";\n int w = "+this.getWidthCoordString()+";\n int d = "+this.getDepthCoordString()+";\n\n int in_h = h / "+e+";\n int offset_h = imod(h, "+e+");\n int in_w = w / "+e+";\n int offset_w = imod(w, "+e+");\n int offset_d = (offset_h * "+e+" + offset_w) *\n "+this.getOutputDepthSize()+";\n int in_d = d + offset_d;\n\n float result = "+this.getInputSamplingString()+";\n setOutput(result);\n }\n "}return t.prototype.getHeightCoordString=function(){return"NHWC"===this.dataFormat?"coords[1]":"coords[2]"},t.prototype.getWidthCoordString=function(){return"NHWC"===this.dataFormat?"coords[2]":"coords[3]"},t.prototype.getDepthCoordString=function(){return"NHWC"===this.dataFormat?"coords[3]":"coords[1]"},t.prototype.getOutputDepthSize=function(){return"NHWC"===this.dataFormat?this.outputShape[3]:this.outputShape[1]},t.prototype.getInputSamplingString=function(){return"NHWC"===this.dataFormat?"getX(b, in_h, in_w, in_d)":"getX(b, in_d, in_h, in_w)"},t}(),$i=function(t){this.variableNames=["X"],this.outputShape=[t,t],this.userCode="\n void main() {\n ivec2 coords = getOutputCoords();\n float val = coords[0] == coords[1] ? getX(coords[0]) : 0.0;\n setOutput(val);\n }\n "},Qi=function(t){this.variableNames=["A"],this.outTexUsage=zt.DOWNLOAD;var e=Ya();this.outputShape=t,this.userCode="\n "+Ja+"\n\n void main() {\n float x = getAAtOutCoords();\n "+e.output+" = encode_float(x);\n }\n "},Ji=function(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!1,this.outTexUsage=zt.DOWNLOAD;var e=Ya();this.outputShape=t,this.userCode="\n "+Ja+"\n\n void main() {\n ivec3 coords = getOutputCoords();\n float x = getChannel(getAAtOutCoords(), vec2(coords.y, coords.z));\n "+e.output+" = encode_float(x);\n }\n "},Zi=function(t,e,n){void 0===n&&(n=!1),this.variableNames=["A"];var r=Ya(),o=e[0],a=e[1];this.outputShape=t;var i="result";n&&(i="floor(result * 255. + 0.5)"),this.userCode="\n "+Qa(t)+"\n\n void main() {\n ivec3 coords = getOutputCoords();\n\n int flatIndex = getFlatIndex(coords);\n int offset = imod(flatIndex, 4);\n\n flatIndex = idiv(flatIndex, 4, 1.);\n \n int r = flatIndex / "+a+";\n int c = imod(flatIndex, "+a+");\n vec2 uv = (vec2(c, r) + halfCR) / vec2("+a+".0, "+o+".0);\n vec4 values = "+r.texture2D+"(A, uv);\n\n float result;\n\n if(offset == 0) {\n result = values[0];\n } else if(offset == 1) {\n result = values[1];\n } else if(offset == 2) {\n result = values[2];\n } else {\n result = values[3];\n }\n\n "+r.output+" = vec4("+i+", 0., 0., 0.);\n }\n "},ts=function(t,e,n){void 0===n&&(n=!1),this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0;var r=Ya(),o=e[0],a=e[1];this.outputShape=t;var i="",s="result";n&&(s="floor(result * 255. + 0.5)");for(var u=0;u<=1;u++)for(var c=0;c<=1;c++){var l=2*u+c;i+="\n localCoords = coords;\n if(localCoords[2] + "+c+" < "+t[2]+") {\n localCoords[2] += "+c+";\n if(localCoords[1] + "+u+" < "+t[1]+") {\n localCoords[1] += "+u+";\n\n flatIndex = getFlatIndex(localCoords);\n offset = imod(flatIndex, 4);\n\n flatIndex = idiv(flatIndex, 4, 1.);\n\n r = flatIndex / "+a+";\n c = imod(flatIndex, "+a+");\n uv = (vec2(c, r) + halfCR) / vec2("+a+".0, "+o+".0);\n values = "+r.texture2D+"(A, uv);\n\n if(offset == 0) {\n result["+l+"] = values[0];\n } else if(offset == 1) {\n result["+l+"] = values[1];\n } else if(offset == 2) {\n result["+l+"] = values[2];\n } else {\n result["+l+"] = values[3];\n }\n }\n }\n "}this.userCode="\n "+Qa(t)+"\n\n void main() {\n ivec3 coords = getOutputCoords();\n\n vec4 result = vec4(0.);\n int flatIndex, r, c, offset;\n ivec3 localCoords;\n vec2 uv;\n vec4 values;\n\n "+i+"\n\n "+r.output+" = "+s+";\n }\n "},es="return real * expR - imag * expI;",ns="return real * expI + imag * expR;",rs=function(t,e,n){this.variableNames=["real","imag"];var r=e[1];this.outputShape=e;var o=n?"2.0 * "+Math.PI:"-2.0 * "+Math.PI,a=n?r+".0":"1.0";this.userCode="\n const float exponentMultiplier = "+o+";\n\n float unaryOpComplex(float real, float expR, float imag, float expI) {\n "+t+"\n }\n\n float mulMatDFT(int batch, int index) {\n float indexRatio = float(index) / float("+r+");\n float exponentMultiplierTimesIndexRatio =\n exponentMultiplier * indexRatio;\n\n float result = 0.0;\n\n for (int i = 0; i < "+r+"; i++) {\n // x = (-2|2 * PI / N) * index * i;\n float x = exponentMultiplierTimesIndexRatio * float(i);\n float expR = cos(x);\n float expI = sin(x);\n float real = getReal(batch, i);\n float imag = getImag(batch, i);\n\n result +=\n unaryOpComplex(real, expR, imag, expI) / "+a+";\n }\n\n return result;\n }\n\n void main() {\n ivec2 coords = getOutputCoords();\n setOutput(mulMatDFT(coords[0], coords[1]));\n }\n "},os=function(){function t(t,e){this.outputShape=[],this.variableNames=["x"],this.outputShape=t,this.userCode="\n uniform float value;\n void main() {\n // Input can be obtained from uniform value.\n setOutput(value);\n }\n "}return t.prototype.getCustomSetupFunc=function(t){var e=this;return function(n,r){null==e.valueLoc&&(e.valueLoc=n.getUniformLocationNoThrow(r,"value")),n.gl.uniform1f(e.valueLoc,t)}},t}(),as=function(t,e,n){this.variableNames=["A","indices"];var r=t.slice();r[n]=e,this.outputShape=r,this.rank=r.length;var o=ui(this.rank),a=function(t,e){var n=t.length;if(n>4)throw Error("Gather for rank "+n+" is not yet supported");if(1===n)return"int(getIndices(resRC))";for(var r=["resRC.x","resRC.y","resRC.z","resRC.w"],o=[],a=0;a1?"strides[j]":"strides";this.userCode="\n "+r+" strides = "+r+"("+this.strides+");\n void main() {\n "+o+" coords = getOutputCoords();\n int flattenIndex = 0;\n for (int j = 0; j < "+this.sliceDim+"; j++) {\n int index = round(getIndices(coords[0], j));\n flattenIndex += index * "+a+";\n }\n setOutput(getX(flattenIndex, coords[1]));\n }\n "};function ss(t,e){var n=Ya();return oe(t,e,n.version+"\n precision highp float;\n "+n.attribute+" vec3 clipSpacePos;\n "+n.attribute+" vec2 uv;\n "+n.varyingVs+" vec2 resultUV;\n\n void main() {\n gl_Position = vec4(clipSpacePos, 1);\n resultUV = uv;\n }")}function us(t,e){return fe(t,e,new Float32Array([-1,1,0,0,1,-1,-1,0,0,0,1,1,0,1,1,1,-1,0,1,0]))}function cs(t,e){return de(t,e,new Uint16Array([0,1,2,2,1,3]))}function ls(t,e,n,r,o,a,i){ve(n,r);var s=pe(t,e),u=t.TEXTURE_2D;return Jt(t,e,(function(){return t.bindTexture(u,s)})),Jt(t,e,(function(){return t.texParameteri(u,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE)})),Jt(t,e,(function(){return t.texParameteri(u,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE)})),Jt(t,e,(function(){return t.texParameteri(u,t.TEXTURE_MIN_FILTER,t.NEAREST)})),Jt(t,e,(function(){return t.texParameteri(u,t.TEXTURE_MAG_FILTER,t.NEAREST)})),Jt(t,e,(function(){return t.texImage2D(u,0,o,n,r,0,a,i,null)})),Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,null)})),s}function hs(t,e,n,r,o){var a=Xt(n,r);return ls(t,e,a[0],a[1],o.internalFormatFloat,o.textureFormatFloat,t.FLOAT)}function fs(t,e,n,r,o){var a=Xt(n,r);return ls(t,e,a[0],a[1],o.internalFormatHalfFloat,o.textureFormatFloat,o.textureTypeHalfFloat)}function ds(t,e,n,r,o){var a=Xt(n,r);return ls(t,e,a[0],a[1],t.RGBA,t.RGBA,t.UNSIGNED_BYTE)}function ps(t,e,n,r,o){var a=$t(n,r);return ls(t,e,a[0],a[1],o.internalFormatPackedFloat,t.RGBA,t.FLOAT)}function vs(t,e,n,r,o){var a=$t(n,r);return ls(t,e,a[0],a[1],o.internalFormatPackedHalfFloat,t.RGBA,o.textureTypeHalfFloat)}function gs(t,e,n,r){return Jt(t,e,(function(){return t.bindBuffer(t.ARRAY_BUFFER,r)})),me(t,e,n,"clipSpacePos",r,3,20,0)&&me(t,e,n,"uv",r,2,20,12)}function ms(t,e,n,r,o,a,i){var s,u,c;Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,n)})),a instanceof Uint8Array?(s=new Uint8Array(r*o*4),u=t.UNSIGNED_BYTE,c=t.RGBA):(s=new Float32Array(r*o*4),u=t.FLOAT,c=i.internalFormatPackedFloat),s.set(a),Jt(t,e,(function(){return t.texImage2D(t.TEXTURE_2D,0,c,r,o,0,t.RGBA,u,s)})),Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,null)}))}function ys(t,e,n,r){Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,n)})),r.data instanceof Uint8Array?Jt(t,e,(function(){return t.texImage2D(t.TEXTURE_2D,0,t.RGBA,r.width,r.height,0,t.RGBA,t.UNSIGNED_BYTE,r.data)})):Jt(t,e,(function(){return t.texImage2D(t.TEXTURE_2D,0,t.RGBA,t.RGBA,t.UNSIGNED_BYTE,r)})),Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,null)}))}function xs(t,e,n,r,o){var a=t.createBuffer();Jt(t,e,(function(){return t.bindBuffer(t.PIXEL_PACK_BUFFER,a)}));var i=16*n*r;return Jt(t,e,(function(){return t.bufferData(t.PIXEL_PACK_BUFFER,i,t.STREAM_READ)})),Jt(t,e,(function(){return t.readPixels(0,0,r,n,t.RGBA,t.FLOAT,0)})),Jt(t,e,(function(){return t.bindBuffer(t.PIXEL_PACK_BUFFER,null)})),a}function bs(t,e,n){var r=t,o=new Float32Array(n);return r.bindBuffer(r.PIXEL_PACK_BUFFER,e),r.getBufferSubData(r.PIXEL_PACK_BUFFER,0,o),r.bindBuffer(r.PIXEL_PACK_BUFFER,null),o}function ws(t,e,n,r,o){var a=Xt(n,r),i=a[0],s=a[1],u=new Uint8Array(n*r*4);return Jt(t,e,(function(){return t.readPixels(0,0,i,s,o.downloadTextureFormat,t.UNSIGNED_BYTE,u)})),new Float32Array(u.buffer)}function Cs(t,e,n,r,o,a,i,s){var u=t,c=new Float32Array(function(t,e){var n=$t(t,e);return n[0]*n[1]*4}(a,i));return u.bindBuffer(u.PIXEL_PACK_BUFFER,e),u.getBufferSubData(u.PIXEL_PACK_BUFFER,0,c),u.bindBuffer(u.PIXEL_PACK_BUFFER,null),c}function Es(t,e,n,r){var o=new Float32Array(n*r*4);return Jt(t,e,(function(){return t.readPixels(0,0,r,n,t.RGBA,t.FLOAT,o)})),o}var Rs=Object.freeze({createVertexShader:ss,createVertexBuffer:us,createIndexBuffer:cs,createFloat32MatrixTexture:hs,createFloat16MatrixTexture:fs,createUnsignedBytesMatrixTexture:ds,createPackedMatrixTexture:ps,createFloat16PackedMatrixTexture:vs,bindVertexProgramAttributeStreams:gs,uploadDenseMatrixToTexture:ms,uploadPixelDataToTexture:ys,createBufferFromOutputTexture:xs,downloadFloat32MatrixFromBuffer:bs,downloadByteEncodedFloatMatrixFromOutputTexture:ws,downloadPackedMatrixFromBuffer:Cs,downloadMatrixFromPackedOutputTexture:Es}),Is=function(){function t(t){this.outputTexture=null,this.program=null,this.disposed=!1,this.vertexAttrsAreBound=!1,this.itemsToPoll=[];var e=i().getNumber("WEBGL_VERSION");null!=t?(this.gl=t,Kt(e,t)):this.gl=jt(e);var n="WEBGL_color_buffer_float";if(1===i().getNumber("WEBGL_VERSION")){if(this.textureFloatExtension=re(this.gl,this.debug,"OES_texture_float"),Pe(this.gl,"OES_texture_half_float"))this.textureHalfFloatExtension=re(this.gl,this.debug,"OES_texture_half_float");else if(i().get("WEBGL_FORCE_F16_TEXTURES"))throw new Error("GL context does not support half float textures, yet the environment flag WEBGL_FORCE_F16_TEXTURES is set to true.");if(this.colorBufferFloatExtension=this.gl.getExtension(n),Pe(this.gl,"EXT_color_buffer_half_float"))this.colorBufferHalfFloatExtension=re(this.gl,this.debug,"EXT_color_buffer_half_float");else if(i().get("WEBGL_FORCE_F16_TEXTURES"))throw new Error("GL context does not support color renderable half floats, yet the environment flag WEBGL_FORCE_F16_TEXTURES is set to true.")}else if(n="EXT_color_buffer_float",Pe(this.gl,n))this.colorBufferFloatExtension=this.gl.getExtension(n);else{if(!Pe(this.gl,"EXT_color_buffer_half_float"))throw new Error("GL context does not support color renderable floats");this.colorBufferHalfFloatExtension=this.gl.getExtension("EXT_color_buffer_half_float")}this.vertexBuffer=us(this.gl,this.debug),this.indexBuffer=cs(this.gl,this.debug),this.framebuffer=ge(this.gl,this.debug),this.textureConfig=Qt(this.gl,this.textureHalfFloatExtension)}return Object.defineProperty(t.prototype,"debug",{get:function(){return i().getBool("DEBUG")},enumerable:!0,configurable:!0}),t.prototype.dispose=function(){var t=this;if(!this.disposed){null!=this.program&&console.warn("Disposing a GPGPUContext that still has a bound WebGLProgram. This is probably a resource leak, delete the program with GPGPUContext.deleteProgram before disposing."),null!=this.outputTexture&&console.warn("Disposing a GPGPUContext that still has a bound output matrix texture. This is probably a resource leak, delete the output matrix texture with GPGPUContext.deleteMatrixTexture before disposing.");var e=this.gl;Jt(e,this.debug,(function(){return e.finish()})),Jt(e,this.debug,(function(){return e.bindFramebuffer(e.FRAMEBUFFER,null)})),Jt(e,this.debug,(function(){return e.deleteFramebuffer(t.framebuffer)})),Jt(e,this.debug,(function(){return e.bindBuffer(e.ARRAY_BUFFER,null)})),Jt(e,this.debug,(function(){return e.bindBuffer(e.ELEMENT_ARRAY_BUFFER,null)})),Jt(e,this.debug,(function(){return e.deleteBuffer(t.indexBuffer)})),this.disposed=!0}},t.prototype.createFloat32MatrixTexture=function(t,e){return this.throwIfDisposed(),hs(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.createFloat16MatrixTexture=function(t,e){return this.throwIfDisposed(),fs(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.createUnsignedBytesMatrixTexture=function(t,e){return this.throwIfDisposed(),ds(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.uploadPixelDataToTexture=function(t,e){this.throwIfDisposed(),ys(this.gl,this.debug,t,e)},t.prototype.uploadDenseMatrixToTexture=function(t,e,n,r){this.throwIfDisposed(),ms(this.gl,this.debug,t,e,n,r,this.textureConfig)},t.prototype.createFloat16PackedMatrixTexture=function(t,e){return this.throwIfDisposed(),vs(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.createPackedMatrixTexture=function(t,e){return this.throwIfDisposed(),ps(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.deleteMatrixTexture=function(t){var e=this;this.throwIfDisposed(),this.outputTexture===t&&(Ee(this.gl,this.debug,this.framebuffer),this.outputTexture=null),Jt(this.gl,this.debug,(function(){return e.gl.deleteTexture(t)}))},t.prototype.downloadByteEncodedFloatMatrixFromOutputTexture=function(t,e,n){var r=this;return this.downloadMatrixDriver(t,(function(){return ws(r.gl,r.debug,e,n,r.textureConfig)}))},t.prototype.downloadPackedMatrixFromBuffer=function(t,e,n,r,o,a){return Cs(this.gl,t,0,0,0,o,a,this.textureConfig)},t.prototype.downloadFloat32MatrixFromBuffer=function(t,e){return bs(this.gl,t,e)},t.prototype.createBufferFromTexture=function(t,e,n){this.bindTextureToFrameBuffer(t);var r=xs(this.gl,this.debug,e,n,this.textureConfig);return this.unbindTextureToFrameBuffer(),r},t.prototype.createAndWaitForFence=function(){var t=this.createFence(this.gl);return this.pollFence(t)},t.prototype.createFence=function(t){var e,n,r=this;if(i().getBool("WEBGL_FENCE_API_ENABLED")){var o=t,a=o.fenceSync(o.SYNC_GPU_COMMANDS_COMPLETE,0);t.flush(),n=function(){var t=o.clientWaitSync(a,0,0);return t===o.ALREADY_SIGNALED||t===o.CONDITION_SATISFIED},e=a}else i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?(e=this.beginQuery(),this.endQuery(),n=function(){return r.isQueryAvailable(e,i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))}):n=function(){return!0};return{query:e,isFencePassed:n}},t.prototype.downloadMatrixFromPackedTexture=function(t,e,n){var r=this;return this.downloadMatrixDriver(t,(function(){return Es(r.gl,r.debug,e,n)}))},t.prototype.createProgram=function(t){this.throwIfDisposed();var e=this.gl,n=ae(e,this.debug,t),r=ss(e,this.debug),o=ce(e,this.debug);return Jt(e,this.debug,(function(){return e.attachShader(o,r)})),Jt(e,this.debug,(function(){return e.attachShader(o,n)})),le(e,this.debug,o),this.debug&&he(e,this.debug,o),this.vertexAttrsAreBound||(this.setProgram(o),this.vertexAttrsAreBound=gs(e,this.debug,this.program,this.vertexBuffer)),o},t.prototype.deleteProgram=function(t){var e=this;this.throwIfDisposed(),t===this.program&&(this.program=null),null!=t&&Jt(this.gl,this.debug,(function(){return e.gl.deleteProgram(t)}))},t.prototype.setProgram=function(t){var e=this;this.throwIfDisposed(),this.program=t,null!=this.program&&this.debug&&he(this.gl,this.debug,this.program),Jt(this.gl,this.debug,(function(){return e.gl.useProgram(t)}))},t.prototype.getUniformLocation=function(t,e,n){return void 0===n&&(n=!0),this.throwIfDisposed(),n?xe(this.gl,this.debug,t,e):be(this.gl,t,e)},t.prototype.getAttributeLocation=function(t,e){var n=this;return this.throwIfDisposed(),Jt(this.gl,this.debug,(function(){return n.gl.getAttribLocation(t,e)}))},t.prototype.getUniformLocationNoThrow=function(t,e){return this.throwIfDisposed(),this.gl.getUniformLocation(t,e)},t.prototype.setInputMatrixTexture=function(t,e,n){this.throwIfDisposed(),this.throwIfNoProgram(),we(this.gl,this.debug,this.program,t,e,n)},t.prototype.setOutputMatrixTexture=function(t,e,n){this.setOutputMatrixTextureDriver(t,n,e)},t.prototype.setOutputPackedMatrixTexture=function(t,e,n){this.throwIfDisposed();var r=$t(e,n),o=r[0],a=r[1];this.setOutputMatrixTextureDriver(t,o,a)},t.prototype.setOutputMatrixWriteRegion=function(t,e,n,r){this.setOutputMatrixWriteRegionDriver(n,t,r,e)},t.prototype.setOutputPackedMatrixWriteRegion=function(t,e,n,r){throw new Error("setOutputPackedMatrixWriteRegion not implemented.")},t.prototype.debugValidate=function(){null!=this.program&&he(this.gl,this.debug,this.program),Re(this.gl)},t.prototype.executeProgram=function(){this.throwIfDisposed(),this.throwIfNoProgram();var t=this.gl;this.debug&&this.debugValidate(),Jt(t,this.debug,(function(){return t.drawElements(t.TRIANGLES,6,t.UNSIGNED_SHORT,0)}))},t.prototype.blockUntilAllProgramsCompleted=function(){var t=this;this.throwIfDisposed(),Jt(this.gl,this.debug,(function(){return t.gl.finish()}))},t.prototype.getQueryTimerExtension=function(){return null==this.disjointQueryTimerExtension&&(this.disjointQueryTimerExtension=re(this.gl,this.debug,2===i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")?"EXT_disjoint_timer_query_webgl2":"EXT_disjoint_timer_query")),this.disjointQueryTimerExtension},t.prototype.getQueryTimerExtensionWebGL2=function(){return this.getQueryTimerExtension()},t.prototype.getQueryTimerExtensionWebGL1=function(){return this.getQueryTimerExtension()},t.prototype.beginQuery=function(){if(2===i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")){var t=this.gl,e=this.getQueryTimerExtensionWebGL2(),n=t.createQuery();return t.beginQuery(e.TIME_ELAPSED_EXT,n),n}var r=this.getQueryTimerExtensionWebGL1(),o=r.createQueryEXT();return r.beginQueryEXT(r.TIME_ELAPSED_EXT,o),o},t.prototype.endQuery=function(){if(2!==i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")){var t=this.getQueryTimerExtensionWebGL1();t.endQueryEXT(t.TIME_ELAPSED_EXT)}else{var e=this.gl,n=this.getQueryTimerExtensionWebGL2();e.endQuery(n.TIME_ELAPSED_EXT)}},t.prototype.waitForQueryAndGetTime=function(t){return n(this,void 0,void 0,(function(){var e=this;return r(this,(function(n){switch(n.label){case 0:return[4,F((function(){return e.disposed||e.isQueryAvailable(t,i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))}))];case 1:return n.sent(),[2,this.getQueryTime(t,i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))]}}))}))},t.prototype.getQueryTime=function(t,e){if(0===e)return null;if(2===e){var n=this.gl;return n.getQueryParameter(t,n.QUERY_RESULT)/1e6}var r=this.getQueryTimerExtensionWebGL1();return r.getQueryObjectEXT(t,r.QUERY_RESULT_EXT)/1e6},t.prototype.isQueryAvailable=function(t,e){if(0===e)return!0;if(2===e){var n=this.gl,r=this.getQueryTimerExtensionWebGL2(),o=n.getQueryParameter(t,n.QUERY_RESULT_AVAILABLE);return null==this.disjoint&&(this.disjoint=this.gl.getParameter(r.GPU_DISJOINT_EXT)),o&&!this.disjoint}o=(r=this.getQueryTimerExtensionWebGL1()).getQueryObjectEXT(t,r.QUERY_RESULT_AVAILABLE_EXT);return null==this.disjoint&&(this.disjoint=this.gl.getParameter(r.GPU_DISJOINT_EXT)),o&&!this.disjoint},t.prototype.pollFence=function(t){var e=this;return new Promise((function(n){e.addItemToPoll((function(){return t.isFencePassed()}),(function(){return n()}))}))},t.prototype.pollItems=function(){for(var t=function(t){for(var e=0;e1||F((function(){return n.pollItems(),0===n.itemsToPoll.length}))},t.prototype.bindTextureToFrameBuffer=function(t){this.throwIfDisposed(),Ce(this.gl,this.debug,t,this.framebuffer),this.debug&&Re(this.gl)},t.prototype.unbindTextureToFrameBuffer=function(){null!=this.outputTexture?(Ce(this.gl,this.debug,this.outputTexture,this.framebuffer),this.debug&&Re(this.gl)):Ee(this.gl,this.debug,this.framebuffer)},t.prototype.downloadMatrixDriver=function(t,e){this.bindTextureToFrameBuffer(t);var n=e();return this.unbindTextureToFrameBuffer(),n},t.prototype.setOutputMatrixTextureDriver=function(t,e,n){this.throwIfDisposed();var r=this.gl;Ce(r,this.debug,t,this.framebuffer),this.debug&&Re(r),this.outputTexture=t,Jt(r,this.debug,(function(){return r.viewport(0,0,e,n)})),Jt(r,this.debug,(function(){return r.scissor(0,0,e,n)}))},t.prototype.setOutputMatrixWriteRegionDriver=function(t,e,n,r){var o=this;this.throwIfDisposed(),Jt(this.gl,this.debug,(function(){return o.gl.scissor(t,e,n,r)}))},t.prototype.throwIfDisposed=function(){if(this.disposed)throw new Error("Attempted to use disposed GPGPUContext.")},t.prototype.throwIfNoProgram=function(){if(null==this.program)throw new Error("No GPU program is currently set.")},t}();function ks(t,e){if(t.length!==e.length)throw Error("Binary was compiled with "+t.length+" inputs, but was executed with "+e.length+" inputs");t.forEach((function(t,n){var r=t.logicalShape,o=e[n],a=o.shape;if(!S(r,a))throw Error("Binary was compiled with different shapes than the current args. Shapes "+r+" and "+a+" must match");if(!t.isUniform||!o.isUniform){var i=t.texShape,s=o.isUniform?null:o.texData.texShape;if(!S(i,s))throw Error("Binary was compiled with different texture shapes than the current args. Shape "+i+" and "+s+" must match")}}))}var Ss=function(t,e,n){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t;for(var r=n.filterWidth,o=n.inChannels,a=n.strideWidth,i=n.strideHeight,s=n.padInfo,u=n.outWidth,c=n.dilationWidth,l=n.dilationHeight,h=n.dataFormat,f=s.left,d=s.top,p=o*r,v=Ya(),g="channelsLast"===h,m=g?0:1,y=g?1:2,x="",b=0;b<=1;b++)for(var w=0;w<=1;w++)x+="\n blockIndex = rc.y + "+w+";\n pos = rc.x + "+b+";\n\n if(blockIndex < "+t[1]+" && pos < "+t[0]+") {\n offsetY = int(blockIndex / ("+u+")) * "+i+" - "+d+";\n d0 = offsetY + "+l+" * (pos / "+p+");\n\n if(d0 < "+e[m]+" && d0 >= 0) {\n\n offsetX = int(mod(float(blockIndex), "+u+".) * "+a+". - "+f+".);\n d1 = offsetX + "+c+" * (int(mod(float(pos), "+p+".) / "+o+".));\n\n if(d1 < "+e[y]+" && d1 >= 0) {\n\n ch = int(mod(float(pos), "+o+".));\n\n if ("+g+") {\n innerDims = vec2(d1, ch);\n result["+(2*b+w)+"] = getChannel(\n getA(d0, int(innerDims.x),\n int(innerDims.y)), innerDims);\n } else {\n innerDims = vec2(d0, d1);\n result["+(2*b+w)+"] = getChannel(\n getA(ch, int(innerDims.x),\n int(innerDims.y)), innerDims);\n }\n }\n }\n }\n ";this.userCode="\n void main() {\n ivec2 rc = getOutputCoords();\n\n vec4 result = vec4(0);\n\n int blockIndex, pos, offsetY, d0, offsetX, d1, ch;\n vec2 innerDims;\n\n "+x+"\n\n "+v.output+" = result;\n }\n "},As=function(t,e,n,r,o){this.variableNames=["x"],this.outputShape=[];var a,i=e,s=t[3]-1;this.outputShape=t;var u="float("+n+") + float("+r+") * sum";a=.5===o?"inversesqrt("+u+")":1===o?"1.0/("+u+")":"exp(log("+u+") * float(-"+o+"));",this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int r = coords[1];\n int c = coords[2];\n int d = coords[3];\n float x = getX(b, r, c, d);\n float sum = 0.0;\n for (int j = -"+i+"; j <= "+i+"; j++) {\n int idx = d + j;\n if (idx >= 0 && idx <= "+s+") {\n float z = getX(b, r, c, idx);\n sum += z * z;\n }\n }\n float val = x * "+a+";\n setOutput(val);\n }\n "},Ts=function(t,e,n,r,o){this.variableNames=["inputImage","outputImage","dy"],this.outputShape=[],this.outputShape=t,this.depth=t[3],this.depthRadius=e,this.bias=n,this.alpha=r,this.beta=o,this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int r = coords[1];\n int c = coords[2];\n\n float result = 0.0;\n for (int d = 0; d < "+this.depth+"; ++d) {\n int depthBegin = int(max(0.0, float(d - "+e+")));\n int depthEnd = int(min(float("+this.depth+"),\n float(d + "+e+" + 1)));\n\n const int MIN_DEPTH_BEGIN = 0;\n const int MAX_DEPTH_END = "+this.depth+";\n\n float norm = 0.0;\n for (int k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; ++k) {\n if (k < depthBegin){\n continue;\n }\n else if (k >= depthBegin && k < depthEnd) {\n norm += getInputImage(b, r, c, k) * getInputImage(b, r, c, k);\n }\n else {\n break;\n }\n }\n\n norm = float("+r+") * norm + float("+n+");\n\n for(int k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; ++k){\n if (k < depthBegin){\n continue;\n }\n else if (k >= depthBegin && k < depthEnd){\n float dyi = -2.0 * float("+r+")\n * float("+o+")\n * getInputImage(b ,r ,c, k) * getOutputImage(b, r, c, d)\n / norm;\n if (k == d) {\n dyi += pow(norm, -1.0 * "+o+");\n }\n if (k == coords[3]) {\n dyi *= getDy(b, r, c, d);\n result += dyi;\n }\n }\n else {\n break;\n }\n }\n }\n setOutput(result);\n }\n "},Ds=function(t,e,n,r,o){this.variableNames=["x"],this.outputShape=[],this.packedInputs=!0,this.packedOutput=!0;var a,i=e,s=t[3]-1;this.outputShape=t;var u="float("+n+") + float("+r+") * sum";a=.5===o?"inversesqrt("+u+")":1===o?"1.0/("+u+")":"exp(log("+u+") * float(-"+o+"));",this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords.x;\n int r = coords.y;\n int c = coords.z;\n int d = coords.w;\n\n bool hasNextCol = d < "+this.outputShape[3]+";\n bool hasNextRow = c < "+this.outputShape[2]+";\n\n vec4 sum = vec4(0.);\n vec4 xFragAtOutputCoords = getX(b, r, c, d);\n\n vec4 xAtOutputCoords = vec4(\n getChannel(xFragAtOutputCoords, vec2(c, d)),\n hasNextCol ?\n getChannel(xFragAtOutputCoords, vec2(c, d + 1)) : 0.0,\n hasNextRow ?\n getChannel(xFragAtOutputCoords , vec2(c + 1, d)) : 0.0,\n (hasNextRow && hasNextCol) ?\n getChannel(xFragAtOutputCoords, vec2(c + 1, d + 1)) : 0.0\n );\n\n int firstChannel = d - "+i+";\n vec2 cache = vec2(0.);\n if(firstChannel >= 0){\n vec4 firstChannelFrag = getX(b, r, c, firstChannel);\n cache.x = getChannel(firstChannelFrag, vec2(c, firstChannel));\n if(hasNextRow){\n cache.y = getChannel(firstChannelFrag, vec2(c + 1, firstChannel));\n }\n }\n\n ivec2 depth = ivec2(d, d + 1);\n for (int j = - "+i+"; j <= "+i+"; j++) {\n ivec2 idx = depth + j;\n bvec2 aboveLowerBound = greaterThanEqual(idx, ivec2(0));\n bvec2 belowUpperBound = lessThanEqual(idx, ivec2("+s+"));\n\n bool depthInRange = aboveLowerBound.x && belowUpperBound.x;\n bool depthPlusOneInRange = aboveLowerBound.y && belowUpperBound.y;\n\n if(depthInRange || depthPlusOneInRange){\n vec4 z = vec4(0.);\n vec4 xFragAtCurrentDepth;\n z.xz = cache.xy;\n if(depthPlusOneInRange && hasNextCol){\n xFragAtCurrentDepth = idx.y != d ?\n getX(b, r, c, idx.y) : xFragAtOutputCoords;\n z.y = getChannel(xFragAtCurrentDepth, vec2(c, idx.y));\n if(hasNextRow){\n z.w = getChannel(xFragAtCurrentDepth, vec2(c + 1, idx.y));\n }\n }\n cache.xy = z.yw;\n sum += z * z;\n }\n }\n vec4 result = xAtOutputCoords * "+a+";\n setOutput(result);\n }\n "},Ns=function(t){this.variableNames=["dy","maxPos"],this.outputShape=t.inShape;var e=t.strideHeight,n=t.strideWidth,r=t.dilationHeight,o=t.effectiveFilterHeight,a=t.effectiveFilterWidth,i=o-1-t.padInfo.top,s=a-1-t.padInfo.left,u=o*a-1;this.userCode="\n const ivec2 pads = ivec2("+i+", "+s+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n\n ivec2 dyRCCorner = coords.yz - pads;\n int dyRCorner = dyRCCorner.x;\n int dyCCorner = dyRCCorner.y;\n\n // Convolve dy(?, ?, d) with pos mask(:, :, d) to get dx(xR, xC, d).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n for (int wR = 0; wR < "+o+";\n wR += "+r+") {\n float dyR = float(dyRCorner + wR) / "+e+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n for (int wC = 0; wC < "+a+"; wC++) {\n float dyC = float(dyCCorner + wC) / "+n+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n float dyValue = getDy(b, idyR, idyC, d);\n int maxPosValue = "+u+" - int(getMaxPos(b, idyR, idyC, d));\n\n // Get the current value, check it against the value from the\n // position matrix.\n int curPosValue = wR * "+a+" + wC;\n float mask = float(maxPosValue == curPosValue ? 1.0 : 0.0);\n\n dotProd += dyValue * mask;\n }\n }\n setOutput(dotProd);\n }\n "},Fs=function(t){this.variableNames=["dy","maxPos"],this.outputShape=t.inShape;var e=t.strideDepth,n=t.strideHeight,r=t.strideWidth,o=t.dilationDepth,a=t.dilationHeight,i=t.dilationWidth,s=t.effectiveFilterDepth,u=t.effectiveFilterHeight,c=t.effectiveFilterWidth,l=s-1-t.padInfo.front,h=u-1-t.padInfo.top,f=c-1-t.padInfo.left,d=s*u*c-1;this.userCode="\n const ivec3 pads = ivec3("+l+", "+h+", "+f+");\n\n void main() {\n ivec5 coords = getOutputCoords();\n int batch = coords.x;\n int ch = coords.u;\n\n ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;\n int dyDCorner = dyCorner.x;\n int dyRCorner = dyCorner.y;\n int dyCCorner = dyCorner.z;\n\n // Convolve dy(?, ?, ?, ch) with pos mask(:, :, :, d) to get\n // dx(xD, xR, xC, ch).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n\n for (int wD = 0; wD < "+s+";\n wD += "+o+") {\n float dyD = float(dyDCorner + wD) / "+e+".0;\n\n if (dyD < 0.0 || dyD >= "+t.outDepth+".0 || fract(dyD) > 0.0) {\n continue;\n }\n int idyD = int(dyD);\n\n for (int wR = 0; wR < "+u+";\n wR += "+a+") {\n float dyR = float(dyRCorner + wR) / "+n+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 ||\n fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n for (int wC = 0; wC < "+c+";\n wC += "+i+") {\n float dyC = float(dyCCorner + wC) / "+r+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n float dyValue = getDy(batch, idyD, idyR, idyC, ch);\n int maxPosValue = "+d+" -\n int(getMaxPos(batch, idyD, idyR, idyC, ch));\n\n // Get the current value, check it against the value from the\n // position matrix.\n int curPosValue =\n wD * "+u+" * "+c+" +\n wR * "+c+" + wC;\n float mask = float(maxPosValue == curPosValue ? 1.0 : 0.0);\n\n dotProd += dyValue * mask;\n }\n }\n }\n setOutput(dotProd);\n }\n "},_s=function(t,e,n,r,o,a,i){void 0===n&&(n=!1),void 0===r&&(r=!1),void 0===o&&(o=!1),void 0===a&&(a=null),void 0===i&&(i=!1),this.variableNames=["matrixA","matrixB"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=e;var s=n?t[1]:t[2],u=Math.ceil(s/2),c=n?"i * 2, rc.y":"rc.y, i * 2",l=r?"rc.z, i * 2":"i * 2, rc.z",h=n?["a.xxyy","a.zzww"]:["a.xxzz","a.yyww"],f=r?["b.xzxz","b.ywyw"]:["b.xyxy","b.zwzw"],d="",p="";a&&(d=i?"vec4 activation(vec4 a) {\n vec4 b = getPreluActivationWeightsAtOutCoords();\n "+a+"\n }":"vec4 activation(vec4 x) {\n "+a+"\n }",p="result = activation(result);");var v=o?"result += getBiasAtOutCoords();":"";o&&this.variableNames.push("bias"),i&&this.variableNames.push("preluActivationWeights"),this.userCode="\n "+d+"\n\n const float sharedDimension = "+u+".0;\n\n vec4 dot2x2ARowBCol(ivec3 rc) {\n vec4 result = vec4(0);\n for (int i = 0; i < "+u+"; i++) {\n vec4 a = getMatrixA(rc.x, "+c+");\n vec4 b = getMatrixB(rc.x, "+l+");\n\n // These swizzled products need to be separately added.\n // See: https://github.com/tensorflow/tfjs/issues/1735\n result += ("+h[0]+" * "+f[0]+");\n result += ("+h[1]+" * "+f[1]+");\n }\n return result;\n }\n\n void main() {\n ivec3 rc = getOutputCoords();\n vec4 result = dot2x2ARowBCol(rc);\n\n "+v+"\n\n "+p+"\n\n setOutput(result);\n }\n "},Os=function(){function t(t,e,n){this.variableNames=["probs"],this.outputShape=[t,n],this.userCode="\n uniform float seed;\n\n void main() {\n ivec2 coords = getOutputCoords();\n int batch = coords[0];\n\n float r = random(seed);\n float cdf = 0.0;\n\n for (int i = 0; i < "+(e-1)+"; i++) {\n cdf += getProbs(batch, i);\n\n if (r < cdf) {\n setOutput(float(i));\n return;\n }\n }\n\n // If no other event happened, last event happened.\n setOutput(float("+(e-1)+"));\n }\n "}return t.prototype.getCustomSetupFunc=function(t){var e=this;return function(n,r){null==e.seedLoc&&(e.seedLoc=n.getUniformLocation(r,"seed")),n.gl.uniform1f(e.seedLoc,t)}},t}(),Ms=function(t,e,n,r){this.variableNames=["indices"],this.outputShape=[t,e],this.userCode="\n void main() {\n ivec2 coords = getOutputCoords();\n int index = round(getIndices(coords.x));\n setOutput(mix(float("+r+"), float("+n+"),\n float(index == coords.y)));\n }\n "},Bs=function(t){this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0,this.outputShape=t;var e=t.length;if(0===e)this.userCode="\n void main() {\n setOutput(vec4(getA(), 0., 0., 0.));\n }\n ";else{var n=Xa("rc",e),r=ui(e),o=function(t,e,n){if(1===t)return"rc > "+e[0];for(var r="",o=t-2;o= "+e[o],o= "+e+";\n bool rEdge = rp1 >= "+n+";\n "}(e,t[t.length-1],t[t.length-2],n),i=function(t,e){var n=t.length,r=function(t,e){for(var n=[],r=0;r<=1;r++)for(var o=0;o<=1;o++){for(var a=(0===r?"r":"rp1")+", "+(0===o?"c":"cp1"),i=2;i= "+t[0]+" ? 0. : getA(rc + 1),\n 0, 0":"getA("+r[0]+"),\n cEdge ? 0. : getA("+r[1]+"),\n rEdge ? 0. : getA("+r[2]+"),\n rEdge || cEdge ? 0. : getA("+r[3]+")"}(t,n);this.userCode="\n void main() {\n "+r+" rc = getOutputCoords();\n\n if("+o+") {\n setOutput(vec4(0));\n } else {\n "+a+"\n\n setOutput(vec4("+i+"));\n }\n }\n "}};var Ps=function(t,e,n){this.variableNames=["x"],this.outputShape=e.map((function(e,n){return e[0]+t[n]+e[1]}));var r=t.length,o=ui(r),a=e.map((function(t){return t[0]})).join(","),i=e.map((function(e,n){return e[0]+t[n]})).join(","),s=["coords[0]","coords[1]","coords[2]","coords[3]"].slice(0,r);this.userCode=1!==r?"\n "+o+" start = "+o+"("+a+");\n "+o+" end = "+o+"("+i+");\n\n void main() {\n "+o+" outC = getOutputCoords();\n if (any(lessThan(outC, start)) || any(greaterThanEqual(outC, end))) {\n setOutput(float("+n+"));\n } else {\n "+o+" coords = outC - start;\n setOutput(getX("+s+"));\n }\n }\n ":"\n int start = "+a+";\n int end = "+i+";\n\n void main() {\n int outC = getOutputCoords();\n if (outC < start || outC >= end) {\n setOutput(float("+n+"));\n } else {\n setOutput(getX(outC - start));\n }\n }\n "},Ls=function(t,e,n){this.variableNames=["x"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=e.map((function(e,n){return e[0]+t[n]+e[1]}));for(var r=t.length,o=ui(r),a=e.map((function(t){return t[0]})).join(","),i=e.map((function(e,n){return e[0]+t[n]})).join(","),s=Xa("rc",r),u=Xa("source",r),c=s[r-1]+" < "+this.outputShape[r-1],l=1===r?"source":"vec2("+u.slice(-2).join()+")",h=[o+" rc = outputLoc;",s[r-1]+" += 1;\n if("+c+") {\n ",1===r?"":"}\n rc = outputLoc;\n "+s[r-2]+" += 1;\n if("+s[r-2]+" < "+this.outputShape[r-2]+") {",1===r?"":" "+s[r-1]+" += 1;\n if("+c+") {"],f=1===r?"rc < start || rc >= end":"any(lessThan(rc, start)) || any(greaterThanEqual(rc, end))",d="",p=0,v=1===r?2:4;p= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+h+";\n wC += "+c+") {\n int xC = xCCorner + wC;\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n float value = getX(batch, xR, xC, d);\n\n // If a min / max value has already been found, use it. If not,\n // use the current value.\n float currMinMaxValue = mix(\n value, minMaxValue, minMaxValueFound);\n if (value >= currMinMaxValue) {\n minMaxValue = value;\n minMaxValueFound = 1.0;\n minMaxPosition = "+(r?o?v:g:"wR * "+h+" + wC")+";\n }\n }\n }\n setOutput(float(minMaxPosition));\n }\n ";else{var y=e+"("+e+"("+e+"(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])";"avg"===e&&(y="avgValue / count");var x=4*Math.floor(a/4),b=a%4,w="\n if ("+p+") {\n avgValue += dot(values, ones);\n } else {\n minMaxValue = max(values, minMaxValue);\n }\n ";this.userCode="\n const ivec2 strides = ivec2("+i+", "+s+");\n const ivec2 pads = ivec2("+f+", "+d+");\n const float initializationValue = "+m+";\n const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);\n\n float count = 0.0;\n\n float getValue(int batch, int xR, int xC, int d) {\n if (xC < 0 || xC >= "+t.inWidth+") {\n return initializationValue;\n }\n count += 1.0;\n return getX(batch, xR, xC, d);\n }\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords[0];\n int d = coords[3];\n\n ivec2 xRCCorner = coords.yz * strides - pads;\n int xRCorner = xRCCorner.x;\n int xCCorner = xRCCorner.y;\n\n // max/min x(?, ?, d) to get y(yR, yC, d).\n // ? = to be determined\n vec4 minMaxValue = vec4("+m+");\n float avgValue = 0.0;\n count = 0.0;\n\n for (int wR = 0; wR < "+l+";\n wR += "+u+") {\n int xR = xRCorner + wR;\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+x+"; wC += 4) {\n int xC = xCCorner + wC * "+c+";\n\n vec4 values = vec4(\n getValue(batch, xR, xC, d),\n getValue(batch, xR, xC + "+c+", d),\n getValue(batch, xR, xC + 2 * "+c+", d),\n getValue(batch, xR, xC + 3 * "+c+", d)\n );\n\n "+w+"\n }\n\n int xC = xCCorner + "+x+";\n if ("+(1===b)+") {\n vec4 values = vec4(\n getValue(batch, xR, xC, d),\n initializationValue,\n initializationValue,\n initializationValue\n );\n\n "+w+"\n } else if ("+(2===b)+") {\n vec4 values = vec4(\n getValue(batch, xR, xC, d),\n getValue(batch, xR, xC + "+c+", d),\n initializationValue,\n initializationValue\n );\n\n "+w+"\n } else if ("+(3===b)+") {\n vec4 values = vec4(\n getValue(batch, xR, xC, d),\n getValue(batch, xR, xC + "+c+", d),\n getValue(batch, xR, xC + 2 * "+c+", d),\n initializationValue\n );\n\n "+w+"\n }\n }\n setOutput("+y+");\n }\n "}},Us=function(t,e,n,r,o){if(void 0===r&&(r=!1),void 0===o&&(o=!1),this.variableNames=["x"],"avg"===e&&n)throw new Error("Cannot compute positions for average pool.");var a=t.filterWidth,i=t.strideDepth,s=t.strideHeight,u=t.strideWidth,c=t.dilationDepth,l=t.dilationHeight,h=t.dilationWidth,f=t.effectiveFilterDepth,d=t.effectiveFilterHeight,p=t.effectiveFilterWidth,v=t.padInfo.front,g=t.padInfo.top,m=t.padInfo.left;this.outputShape=t.outShape;var y="avg"===e,x="0.0";if(y||(x="-1.0 / 1e-20"),n)this.userCode="\n const ivec3 strides =\n ivec3("+i+", "+s+", "+u+");\n const ivec3 pads = ivec3("+v+", "+g+", "+m+");\n\n void main() {\n ivec5 coords = getOutputCoords();\n int batch = coords.x;\n int ch = coords.u;\n\n ivec3 xCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;\n int xDCorner = xCorner.x;\n int xRCorner = xCorner.y;\n int xCCorner = xCorner.z;\n\n // max/min x(?, ?, ?, ch) to get y(yD, yR, yC, ch).\n // ? = to be determined\n float minMaxValue = 0.0;\n float minMaxValueFound = 0.0;\n int minMaxPosition = 0;\n\n for (int wD = 0; wD < "+f+";\n wD += "+c+") {\n int xD = xDCorner + wD;\n\n if (xD < 0 || xD >= "+t.inDepth+") {\n continue;\n }\n\n for (int wR = 0; wR < "+d+";\n wR += "+l+") {\n int xR = xRCorner + wR;\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+p+";\n wC += "+h+") {\n int xC = xCCorner + wC;\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n float value = getX(batch, xD, xR, xC, ch);\n\n // If a min / max value has already been found, use it. If not,\n // use the current value.\n float currMinMaxValue = mix(\n value, minMaxValue, minMaxValueFound);\n if (value >= currMinMaxValue) {\n minMaxValue = value;\n minMaxValueFound = 1.0;\n minMaxPosition = "+(r?o?"(((batch * "+t.inDepth+" + xD) * "+t.inHeight+" + xR) * "+t.inWidth+" + xC) * "+t.inChannels+" + ch":"((xD * "+t.inHeight+" + xR) * "+t.inWidth+" + xC) * "+t.inChannels+" + ch":"wD * "+d+" * "+p+" +\n wR * "+p+" + wC")+";\n }\n }\n }\n }\n setOutput(float(minMaxPosition));\n }\n ";else{var b=e+"("+e+"("+e+"(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])";"avg"===e&&(b="avgValue / count");var w=4*Math.floor(a/4),C=a%4,E="\n if ("+y+") {\n avgValue += dot(values, ones);\n } else {\n minMaxValue = max(values, minMaxValue);\n }\n ";this.userCode="\n const ivec3 strides =\n ivec3("+i+", "+s+", "+u+");\n const ivec3 pads = ivec3("+v+", "+g+", "+m+");\n const float initializationValue = "+x+";\n const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);\n\n float count = 0.0;\n\n float getValue(int batch, int xD, int xR, int xC, int ch) {\n if (xC < 0 || xC >= "+t.inWidth+") {\n return initializationValue;\n }\n count += 1.0;\n return getX(batch, xD, xR, xC, ch);\n }\n\n void main() {\n ivec5 coords = getOutputCoords();\n int batch = coords.x;\n int ch = coords.u;\n\n ivec3 xCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;\n int xDCorner = xCorner.x;\n int xRCorner = xCorner.y;\n int xCCorner = xCorner.z;\n\n // max/min x(?, ?, ?, d) to get y(yD, yR, yC, ch).\n // ? = to be determined\n vec4 minMaxValue = vec4("+x+");\n float avgValue = 0.0;\n count = 0.0;\n\n for (int wD = 0; wD < "+f+";\n wD += "+c+") {\n int xD = xDCorner + wD;\n\n if (xD < 0 || xD >= "+t.inDepth+") {\n continue;\n }\n\n for (int wR = 0; wR < "+d+";\n wR += "+l+") {\n int xR = xRCorner + wR;\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+w+"; wC += 4) {\n int xC = xCCorner + wC * "+h+";\n\n vec4 values = vec4(\n getValue(batch, xD, xR, xC, ch),\n getValue(batch, xD, xR, xC + "+h+", ch),\n getValue(batch, xD, xR, xC + 2 * "+h+", ch),\n getValue(batch, xD, xR, xC + 3 * "+h+", ch)\n );\n\n "+E+"\n }\n\n int xC = xCCorner + "+w+";\n if ("+(1===C)+") {\n vec4 values = vec4(\n getValue(batch, xD, xR, xC, ch),\n initializationValue,\n initializationValue,\n initializationValue\n );\n\n "+E+"\n } else if ("+(2===C)+") {\n vec4 values = vec4(\n getValue(batch, xD, xR, xC, ch),\n getValue(batch, xD, xR, xC + "+h+", ch),\n initializationValue,\n initializationValue\n );\n\n "+E+"\n } else if ("+(3===C)+") {\n vec4 values = vec4(\n getValue(batch, xD, xR, xC, ch),\n getValue(batch, xD, xR, xC + "+h+", ch),\n getValue(batch, xD, xR, xC + 2 * "+h+", ch),\n initializationValue\n );\n\n "+E+"\n }\n }\n setOutput("+b+");\n }\n }\n "}},Vs=function(t,e){this.variableNames=["x"];var n=t.windowSize,r=t.batchSize,o=t.inSize,a=Math.ceil(o/n);this.outputShape=[r,a];var i="0.0",s="";"prod"===e?i="1.0":"min"===e?(i="1.0 / 1e-20",s="min"):"max"===e&&(i="-1.0 / 1e-20",s="max");var u=e+"("+e+"("+e+"(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])";"sum"===e?u="sumValue":"prod"===e?u="prodValue":"all"===e?u="allValue":"any"===e&&(u="anyValue");var c=4*Math.floor(n/4),l=n%4,h="\n if ("+("sum"===e)+") {\n sumValue += dot(values, ones);\n } else if ("+("prod"===e)+") {\n vec2 tmp = vec2(values[0], values[1]) * vec2(values[2], values[3]);\n prodValue *= tmp[0] * tmp[1];\n } else {\n minMaxValue = "+s+"(values, minMaxValue);\n }\n ",f="vec4";"all"===e?(i="1.0",h="\n bool reducedAllValue = all(values);\n float floatedReducedAllValue = float(reducedAllValue);\n allValue = float(allValue >= 1.0 && floatedReducedAllValue >= 1.0);\n ",f="bvec4"):"any"===e&&(i="0.0",h="\n bool reducedAnyValue = any(values);\n float floatedReducedAnyValue = float(reducedAnyValue);\n anyValue = float(anyValue >= 1.0 || floatedReducedAnyValue >= 1.0);\n ",f="bvec4");var d="";o%n>0&&(d="\n if (inIdx < 0 || inIdx >= "+o+") {\n return initializationValue;\n }\n "),this.userCode="\n const float initializationValue = "+i+";\n const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);\n\n float getValue(int batch, int inIdx) {\n "+d+"\n return getX(batch, inIdx);\n }\n\n void main() {\n ivec2 coords = getOutputCoords();\n int batch = coords[0];\n int outIdx = coords[1];\n int inOffset = outIdx * "+n+";\n\n vec4 minMaxValue = vec4("+i+");\n float prodValue = 1.0;\n float sumValue = 0.0;\n float allValue = 1.0;\n float anyValue = 0.0;\n\n for (int i = 0; i < "+c+"; i += 4) {\n int inIdx = inOffset + i;\n "+f+" values = "+f+"(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n getValue(batch, inIdx + 2),\n getValue(batch, inIdx + 3)\n );\n\n "+h+"\n }\n\n int inIdx = inOffset + "+c+";\n if ("+(1===l)+") {\n "+f+" values = "+f+"(\n getValue(batch, inIdx),\n initializationValue,\n initializationValue,\n initializationValue\n );\n\n "+h+"\n } else if ("+(2===l)+") {\n "+f+" values = "+f+"(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n initializationValue,\n initializationValue\n );\n\n "+h+"\n } else if ("+(3===l)+") {\n "+f+" values = "+f+"(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n getValue(batch, inIdx + 2),\n initializationValue\n );\n\n "+h+"\n }\n setOutput("+u+");\n }\n "},zs=function(t,e){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t;for(var n="",r=0;r<4;r++){var o="thisRC = rc;";r%2==1&&(o+="thisRC.z += 1;"),r>1&&(o+="thisRC.y += 1;"),n+="\n "+o+"\n "+(r>0?"if(thisRC.y < rows && thisRC.z < cols){":"")+"\n int flatIndex = getFlatIndex(thisRC);\n\n ivec3 inputRC = inputCoordsFromReshapedOutCoords(flatIndex);\n vec2 inputRCInnerDims = vec2(float(inputRC.y),float(inputRC.z));\n\n result["+r+"] =\n getChannel(getA(inputRC.x, inputRC.y, inputRC.z), inputRCInnerDims);\n "+(r>0?"}":"")+"\n "}this.userCode="\n \n ivec3 inputCoordsFromReshapedOutCoords(int index) {\n "+$a(["r","c","d"],e)+"\n return ivec3(r, c, d);\n }\n \n "+Qa(t)+"\n\n void main() {\n ivec3 rc = getOutputCoords();\n\n vec4 result = vec4(0.);\n\n ivec3 thisRC;\n int rows = "+t[1]+";\n int cols = "+t[2]+";\n\n "+n+"\n\n setOutput(result);\n }\n "};var Gs=function(t,e,n){this.variableNames=["dy"],this.outputShape=[],this.outputShape=e.shape;var r=e.shape,o=r[1],a=r[2],i=t.shape,s=i[1],u=i[2],c=[n&&s>1?o-1:o,n&&u>1?a-1:a],l=[n&&s>1?s-1:s,n&&u>1?u-1:u],h=c[0]/l[0],f=c[1]/l[1],d=1/h,p=1/f,v=2*Math.ceil(d)+2,g=2*Math.ceil(p)+2;this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n int r = coords[1];\n int c = coords[2];\n\n float accumulator = 0.0;\n\n const float heightScale = float("+h+");\n const float widthScale = float("+f+");\n\n const float invHeightScale = float("+d+");\n const float invWidthScale = float("+p+");\n\n const int winHeight = int("+v+");\n const int winWidth = int("+g+");\n\n // Compute bounds for where in dy we will look\n float startRLerp = floor(float(r) * invHeightScale);\n int startDyR = int(startRLerp - float(winHeight / 2));\n\n float startCLerp = floor(float(c) * invWidthScale);\n int startDyC = int(startCLerp - float(winWidth / 2));\n\n // Loop over dy\n for (int dyROffset = 0; dyROffset < winHeight; dyROffset++) {\n int dyR = dyROffset + startDyR;\n\n // Guard against the window exceeding the bounds of dy\n if (dyR < 0 || dyR >= "+s+") {\n continue;\n }\n\n for (int dyCOffset = 0; dyCOffset < winWidth; dyCOffset++) {\n int dyC = dyCOffset + startDyC;\n\n // Guard against the window exceeding the bounds of dy\n if (dyC < 0 || dyC >= "+u+") {\n continue;\n }\n\n float dxR = float(dyR) * heightScale;\n int topDxRIndex = int(floor(dxR));\n int bottomDxRIndex = int(min(ceil(dxR), "+(o-1)+".0));\n float dxRLerp = dxR - float(topDxRIndex);\n float inverseDxRLerp = 1.0 - dxRLerp;\n\n float dxC = float(dyC) * widthScale;\n int leftDxCIndex = int(floor(dxC));\n int rightDxCIndex = int(min(ceil(dxC), "+(a-1)+".0));\n float dxCLerp = dxC - float(leftDxCIndex);\n float inverseDxCLerp = 1.0 - dxCLerp;\n\n if (r == topDxRIndex && c == leftDxCIndex) {\n // topLeft\n accumulator +=\n getDy(b, dyR, dyC, d) * inverseDxRLerp * inverseDxCLerp;\n }\n\n if (r == topDxRIndex && c == rightDxCIndex) {\n // topRight\n accumulator += getDy(b, dyR, dyC, d) * inverseDxRLerp * dxCLerp;\n }\n\n if (r == bottomDxRIndex && c == leftDxCIndex) {\n // bottomLeft\n accumulator += getDy(b, dyR, dyC, d) * dxRLerp * inverseDxCLerp;\n }\n\n if (r == bottomDxRIndex && c == rightDxCIndex) {\n // bottomRight\n accumulator += getDy(b, dyR, dyC, d) * dxRLerp * dxCLerp;\n }\n }\n }\n // End loop over dy\n\n setOutput(accumulator);\n }\n "},Hs=function(t,e,n,r){this.variableNames=["A"],this.outputShape=[];var o=t[0],a=t[1],i=t[2],s=t[3];this.outputShape=[o,e,n,s];var u=[r&&e>1?a-1:a,r&&n>1?i-1:i],c=[r&&e>1?e-1:e,r&&n>1?n-1:n];this.userCode="\n const vec2 effectiveInputOverOutputRatioRC = vec2(\n "+u[0]/c[0]+",\n "+u[1]/c[1]+");\n const vec2 inputShapeRC = vec2("+a+".0, "+i+".0);\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n ivec2 yRC = coords.yz;\n\n // Fractional source index.\n vec2 sourceFracIndexRC = vec2(yRC) * effectiveInputOverOutputRatioRC;\n\n // Compute the four integer indices.\n ivec2 sourceFloorRC = ivec2(sourceFracIndexRC);\n ivec2 sourceCeilRC = ivec2(\n min(inputShapeRC - 1.0, ceil(sourceFracIndexRC)));\n\n float topLeft = getA(b, sourceFloorRC.x, sourceFloorRC.y, d);\n float bottomLeft = getA(b, sourceCeilRC.x, sourceFloorRC.y, d);\n float topRight = getA(b, sourceFloorRC.x, sourceCeilRC.y, d);\n float bottomRight = getA(b, sourceCeilRC.x, sourceCeilRC.y, d);\n\n vec2 fracRC = sourceFracIndexRC - vec2(sourceFloorRC);\n\n float top = topLeft + (topRight - topLeft) * fracRC.y;\n float bottom = bottomLeft + (bottomRight - bottomLeft) * fracRC.y;\n float newValue = top + (bottom - top) * fracRC.x;\n\n setOutput(newValue);\n }\n "},qs=function(t,e,n,r){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=[];var o=t[0],a=t[1],i=t[2],s=t[3];this.outputShape=[o,e,n,s];var u=[r&&e>1?a-1:a,r&&n>1?i-1:i],c=[r&&e>1?e-1:e,r&&n>1?n-1:n];this.userCode="\n const vec3 effectiveInputOverOutputRatioRC = vec3(\n "+u[0]/c[0]+",\n "+u[1]/c[1]+",\n "+u[1]/c[1]+");\n const vec3 inputShapeRC = vec3("+a+".0, "+i+".0,\n "+i+".0);\n\n float getAValue(int b, int r, int c, int d) {\n return getChannel(getA(b, r, c, d), vec2(c, d));\n }\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n // Calculate values for next column in yRC.z.\n ivec3 yRC = coords.yzz + ivec3(0, 0, 1);\n\n // Fractional source index.\n vec3 sourceFracIndexRC = vec3(yRC) * effectiveInputOverOutputRatioRC;\n\n // Compute the four integer indices.\n ivec3 sourceFloorRC = ivec3(sourceFracIndexRC);\n ivec3 sourceCeilRC = ivec3(\n min(inputShapeRC - 1.0, ceil(sourceFracIndexRC)));\n\n // Should we calculate next column and row elements in 2x2 packed cell.\n bool hasNextCol = d < "+(s-1)+";\n bool hasNextRow = coords.z < "+(n-1)+";\n\n // In parallel, construct four corners for all four components in\n // packed 2x2 cell.\n vec4 topLeft = vec4(\n getAValue(b, sourceFloorRC.x, sourceFloorRC.y, d),\n hasNextCol ? getAValue(b, sourceFloorRC.x, sourceFloorRC.y, d + 1)\n : 0.0,\n hasNextRow ? getAValue(b, sourceFloorRC.x, sourceFloorRC.z, d)\n : 0.0,\n (hasNextRow && hasNextCol) ?\n getAValue(b, sourceFloorRC.x, sourceFloorRC.z, d + 1) : 0.0);\n\n vec4 bottomLeft = vec4(\n getAValue(b, sourceCeilRC.x, sourceFloorRC.y, d),\n hasNextCol ? getAValue(b, sourceCeilRC.x, sourceFloorRC.y, d + 1)\n : 0.0,\n hasNextRow ? getAValue(b, sourceCeilRC.x, sourceFloorRC.z, d)\n : 0.0,\n (hasNextRow && hasNextCol) ?\n getAValue(b, sourceCeilRC.x, sourceFloorRC.z, d + 1) : 0.0);\n\n vec4 topRight = vec4(\n getAValue(b, sourceFloorRC.x, sourceCeilRC.y, d),\n hasNextCol ? getAValue(b, sourceFloorRC.x, sourceCeilRC.y, d + 1)\n : 0.0,\n hasNextRow ? getAValue(b, sourceFloorRC.x, sourceCeilRC.z, d)\n : 0.0,\n (hasNextRow && hasNextCol) ?\n getAValue(b, sourceFloorRC.x, sourceCeilRC.z, d + 1) : 0.0);\n\n vec4 bottomRight = vec4(\n getAValue(b, sourceCeilRC.x, sourceCeilRC.y, d),\n hasNextCol ? getAValue(b, sourceCeilRC.x, sourceCeilRC.y, d + 1)\n : 0.0,\n hasNextRow ? getAValue(b, sourceCeilRC.x, sourceCeilRC.z, d)\n : 0.0,\n (hasNextRow && hasNextCol) ?\n getAValue(b, sourceCeilRC.x, sourceCeilRC.z, d + 1) : 0.0);\n\n vec3 fracRC = sourceFracIndexRC - vec3(sourceFloorRC);\n\n vec4 top = mix(topLeft, topRight, fracRC.yyzz);\n vec4 bottom = mix(bottomLeft, bottomRight, fracRC.yyzz);\n vec4 newValue = mix(top, bottom, fracRC.x);\n\n setOutput(newValue);\n }\n "},Ks=function(t,e,n){this.variableNames=["dy"],this.outputShape=[],this.outputShape=e.shape;var r=e.shape,o=r[1],a=r[2],i=t.shape,s=i[1],u=i[2],c=[n&&s>1?o-1:o,n&&u>1?a-1:a],l=[n&&s>1?s-1:s,n&&u>1?u-1:u],h=c[0]/l[0],f=c[1]/l[1],d=1/h,p=1/f,v=2*Math.ceil(d)+2,g=2*Math.ceil(p)+2;this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n int r = coords[1];\n int c = coords[2];\n\n float accumulator = 0.0;\n\n const float heightScale = float("+h+");\n const float widthScale = float("+f+");\n\n const float invHeightScale = float("+d+");\n const float invWidthScale = float("+p+");\n\n const int winHeight = int("+v+");\n const int winWidth = int("+g+");\n\n // Compute bounds for where in dy we will look\n float startRLerp = floor(float(r) * invHeightScale);\n int startDyR = int(floor(startRLerp - float(winHeight / 2)));\n\n float startCLerp = floor(float(c) * invWidthScale);\n int startDyC = int(floor(startCLerp - float(winWidth / 2)));\n\n // Loop over dy\n for (int dyROffset = 0; dyROffset < winHeight; dyROffset++) {\n int dyR = dyROffset + startDyR;\n\n // Guard against the window exceeding the bounds of dy\n if (dyR < 0 || dyR >= "+s+") {\n continue;\n }\n\n for (int dyCOffset = 0; dyCOffset < winWidth; dyCOffset++) {\n int dyC = dyCOffset + startDyC;\n\n // Guard against the window exceeding the bounds of dy\n if (dyC < 0 || dyC >= "+u+") {\n continue;\n }\n\n float sourceFracRow =\n float("+c[0]+") *\n (float(dyR) / float("+l[0]+"));\n\n float sourceFracCol =\n float("+c[1]+") *\n (float(dyC) / float("+l[1]+"));\n\n int sourceNearestRow = int(min(\n float(int("+o+") - 1),\n "+n+" ? float(round(sourceFracRow)) :\n float(floor(sourceFracRow))));\n\n int sourceNearestCol = int(min(\n float(int("+a+") - 1),\n "+n+" ? float(round(sourceFracCol)) :\n float(floor(sourceFracCol))));\n\n if (r == sourceNearestRow && c == sourceNearestCol) {\n accumulator += getDy(b, dyR, dyC, d);\n }\n }\n }\n // End loop over dy\n\n setOutput(accumulator);\n }\n "},js=function(t,e,n,r){this.variableNames=["A"],this.outputShape=[];var o=t[0],a=t[1],i=t[2],s=t[3];this.outputShape=[o,e,n,s];var u=[r&&e>1?a-1:a,r&&n>1?i-1:i],c=[r&&e>1?e-1:e,r&&n>1?n-1:n],l=r?"0.5":"0.0";this.userCode="\n const vec2 effectiveInputOverOutputRatioRC = vec2(\n "+u[0]/c[0]+",\n "+u[1]/c[1]+");\n const vec2 inputShapeRC = vec2("+a+".0, "+i+".0);\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n ivec2 yRC = coords.yz;\n\n // Fractional source index.\n vec2 sourceFracIndexRC = vec2(yRC) * effectiveInputOverOutputRatioRC;\n\n // Compute the coordinators of nearest neighbor point.\n ivec2 sourceNearestRC = ivec2(\n min(inputShapeRC - 1.0, floor(sourceFracIndexRC + "+l+")));\n\n float newValue = getA(b, sourceNearestRC.x, sourceNearestRC.y, d);\n\n setOutput(newValue);\n }\n "},Xs=function(t,e){this.variableNames=["x"];var n=t.length;if(n>4)throw new Error("WebGL backend: Reverse of rank-"+n+" tensor is not yet supported");if(this.outputShape=t,1!==n){var r=t.map((function(n,r){return function(n){return-1!==e.indexOf(n)&&1!==t[n]?t[n]+" - coords["+n+"] - 1":"coords["+n+"]"}(r)})).join(","),o=ui(n);this.userCode="\n void main() {\n "+o+" coords = getOutputCoords();\n setOutput(getX("+r+"));\n }\n "}else this.userCode="\n void main() {\n int coord = getOutputCoords();\n setOutput(getX("+t[0]+" - coord - 1));\n }\n "},Ys=function(t,e){this.variableNames=["x"],this.packedInputs=!0,this.packedOutput=!0;var n=t.length;if(n>4)throw new Error("WebGL backend: Reverse of rank-"+n+" tensor is not yet supported");this.outputShape=t;var r=Xa("rc",n),o=r[n-1]+" + 1 < "+this.outputShape[n-1],a=r[n-2]+" + 1 < "+this.outputShape[n-2],i=ui(n);function s(n){var r=t.map((function(r,o){return function(n,r){return-1!==e.indexOf(n)&&1!==t[n]?t[n]+" - "+r[n]+" - 1":""+r[n]}(o,n)}));return"getChannel(getX("+r.join(",")+"), vec2("+r.slice(-2).join(",")+"))"}this.userCode=1===n?"\n void main(){\n int rc = getOutputCoords();\n vec4 result = vec4(0.);\n result.r = getChannel(getX("+t[0]+" - rc - 1),\n "+t[0]+" - rc - 1);\n if("+o+"){\n result.g = getChannel(getX("+t[0]+" - (rc + 1) - 1),\n "+t[0]+" - (rc + 1) - 1);\n }\n setOutput(result);\n }\n ":"\n void main() {\n "+i+" rc = getOutputCoords();\n vec4 result = vec4(0.);\n result.r = "+function(t){return s(t)}(r.slice())+";\n if("+o+"){\n result.g = "+function(t){return t[n-1]="("+t[n-1]+" + 1)",s(t)}(r.slice())+";\n }\n if("+a+") {\n result.b = "+function(t){return t[n-2]="("+t[n-2]+" + 1)",s(t)}(r.slice())+";\n if("+o+") {\n result.a = "+function(t){return t[n-1]="("+t[n-1]+" + 1)",t[n-2]="("+t[n-2]+" + 1)",s(t)}(r.slice())+";\n }\n }\n setOutput(result);\n }\n "},$s=function(t,e,n,r,o,a,i){void 0===i&&(i=!0),this.variableNames=["updates","indices","defaultValue"],this.outputShape=a;var s=ui(o.length),u=ui(a.length),c="";1===n?c="i":2===n&&(c="i, j");var l="getIndices("+c+")",h="";1===r?h="i":2===r&&(h="i, coords[1]");var f="getUpdates("+h+")",d=e>1?"strides[j]":"strides";this.userCode="\n "+s+" strides = "+s+"("+o+");\n\n void main() {\n "+u+" coords = getOutputCoords();\n float sum = 0.0;\n bool found = false;\n for (int i = 0; i < "+t+"; i++) {\n int flattenedIndex = 0;\n for (int j = 0; j < "+e+"; j++) {\n int index = round("+l+");\n flattenedIndex += index * "+d+";\n }\n if (flattenedIndex == coords[0]) {\n sum += "+f+";\n found = true;\n }\n }\n setOutput(mix(getDefaultValue(), sum, float(found)));\n }\n "},Qs=function(t,e){this.variableNames=["x","segmentIds"];var n=t.windowSize,r=t.batchSize,o=t.inSize,a=t.numSegments,i=a*Math.ceil(o/n);this.outputShape=[r,i];var s=4*Math.floor(n/4),u=n%4,c="\n sumValue += dot(values, segFilter);\n ",l="";o%n>0&&(l="\n if (inIdx < 0 || inIdx >= "+o+") {\n return initializationValue;\n }\n ");var h="";o%n>0&&(h="\n if (inIdx < 0 || inIdx >= "+o+") {\n return -1.0;\n }\n "),this.userCode="\n const float initializationValue = 0.0;\n\n float getValue(int batch, int inIdx) {\n "+l+"\n return getX(batch, inIdx);\n }\n\n float getSegmentIdAtIndex(int inIdx) {\n "+h+"\n return getSegmentIds(inIdx);\n }\n\n void main() {\n ivec2 coords = getOutputCoords();\n int batch = coords[0];\n int outIdx = coords[1];\n int inOffset = int(floor(float(outIdx) / float(\n "+a+")) * float("+n+"));\n int currentSeg = int(mod(float(outIdx), float("+a+")));\n\n float sumValue = 0.0;\n\n for (int i = 0; i < "+s+"; i += 4) {\n int inIdx = inOffset + i;\n vec4 values = vec4(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n getValue(batch, inIdx + 2),\n getValue(batch, inIdx + 3)\n );\n\n vec4 segFilter = vec4(\n int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 2)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 3)) == currentSeg ? 1 : 0\n );\n\n "+c+"\n }\n\n int inIdx = inOffset + "+s+";\n if ("+(1===u)+") {\n vec4 values = vec4(\n getValue(batch, inIdx),\n initializationValue,\n initializationValue,\n initializationValue\n );\n\n int inIdxSeg = int(getSegmentIdAtIndex(inIdx));\n\n vec4 segFilter = vec4(\n int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n 0,\n 0,\n 0\n );\n\n "+c+"\n } else if ("+(2===u)+") {\n vec4 values = vec4(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n initializationValue,\n initializationValue\n );\n\n vec4 segFilter = vec4(\n int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,\n 0,\n 0\n );\n\n "+c+"\n } else if ("+(3===u)+") {\n vec4 values = vec4(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n getValue(batch, inIdx + 2),\n initializationValue\n );\n\n vec4 segFilter = vec4(\n int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 2)) == currentSeg ? 1 : 0,\n 0\n );\n\n "+c+"\n }\n setOutput(sumValue);\n }\n "},Js=function(t,e,n){var r,o;if(this.variableNames=["c","a","b"],this.outputShape=e,n>4)throw Error("Where for rank "+n+" is not yet supported");if(1===n)o="resRC",r="resRC";else{for(var a=["resRC.x","resRC.y","resRC.z","resRC.w"],i=[],s=[],u=0;u= 1.0) {\n setOutput(getA("+o+"));\n } else {\n setOutput(getB("+o+"));\n }\n }\n "},Zs=function(){function t(t){this.variableNames=["source"],this.outputShape=t,this.rank=t.length;var e,n=ui(this.rank),r="uniform int start["+this.rank+"];",o=function(t){if(1===t)return"sourceLoc";if(t<=6)return tu.slice(0,t).map((function(t){return"sourceLoc."+t})).join(",");throw Error("Slicing for rank "+t+" is not yet supported")}(this.rank);e="\n "+n+" sourceLoc;\n "+n+" coords = getOutputCoords();\n "+t.map((function(t,e){return"sourceLoc."+tu[e]+" = start["+e+"] + coords."+tu[e]+";"})).join("\n")+"\n ",this.userCode="\n "+r+"\n void main() {\n "+e+"\n setOutput(getSource("+o+"));\n }\n "}return t.prototype.getCustomSetupFunc=function(t){var e=this;if(t.length!==this.rank)throw Error("The rank ("+this.rank+") of the program must match the length of start ("+t.length+")");return function(n,r){null==e.startLoc&&(e.startLoc=n.getUniformLocationNoThrow(r,"start"),null==e.startLoc)||n.gl.uniform1iv(e.startLoc,t)}},t}(),tu=["x","y","z","w","u","v"];var eu=function(){function t(t){this.variableNames=["source"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t,this.rank=t.length;var e=ui(this.rank),n=Xa("coords",this.rank),r=Xa("sourceLoc",this.rank),o=1===this.rank?"sourceLoc":"vec2("+r.slice(-2).join()+")",a="getChannel(getSource("+r.join()+"), "+o+")",i="\n result.x = "+a+";\n if (++"+n[this.rank-1]+" < "+t[this.rank-1]+") {\n ++"+r[this.rank-1]+";\n result.y = "+a+";\n --"+r[this.rank-1]+";\n }\n ",s=1===this.rank?"":"\n --"+n[this.rank-1]+";\n if (++"+n[this.rank-2]+" < "+t[this.rank-2]+") {\n ++"+r[this.rank-2]+";\n result.z = "+a+";\n if (++"+n[this.rank-1]+" < "+t[this.rank-1]+") {\n ++"+r[this.rank-1]+";\n result.w = "+a+";\n }\n }\n ",u=this.rank<=4?"sourceLoc = coords +\n "+e+"("+t.map((function(t,e){return"start["+e+"]"})).join()+");":t.map((function(t,e){return r[e]+" = "+n[e]+" + start["+e+"];"})).join("\n");this.userCode="\n uniform int start["+this.rank+"];\n void main() {\n "+e+" coords = getOutputCoords();\n "+e+" sourceLoc;\n "+u+"\n vec4 result = vec4(0.);\n "+i+"\n "+s+"\n setOutput(result);\n }\n "}return t.prototype.getCustomSetupFunc=function(t){var e=this;if(t.length!==this.rank)throw Error("The rank ("+this.rank+") of the program must match the length of start ("+t.length+")");return function(n,r){null==e.startLoc&&(e.startLoc=n.getUniformLocationNoThrow(r,"start"),null==e.startLoc)||n.gl.uniform1iv(e.startLoc,t)}},t}(),nu=function(t,e,n){this.variableNames=["x"],this.outputShape=n;var r=n.length,o=ui(n.length),a=ui(n.length),i="";if(1===r)i="coords * strides + begin";else{var s=0;i=n.map((function(t,e){return s++,1===n.length?"coords * strides["+e+"] + begin["+e+"]":"coords["+(s-1)+"] * strides["+e+"] + begin["+e+"]"})).join(",")}this.userCode="\n "+o+" begin = "+o+"("+t+");\n "+o+" strides = "+o+"("+e+");\n\n void main() {\n "+a+" coords = getOutputCoords();\n setOutput(getX("+i+"));\n }\n "},ru=function(){function t(t){this.gpgpu=t,this.numUsedTextures=0,this.numFreeTextures=0,this.freeTextures={},this.logEnabled=!1,this.usedTextures={}}return t.prototype.acquireTexture=function(t,e,n){var r,o=ou(e,n),a=au(t,o,n);if(a in this.freeTextures||(this.freeTextures[a]=[]),a in this.usedTextures||(this.usedTextures[a]=[]),this.freeTextures[a].length>0){this.numFreeTextures--,this.numUsedTextures++,this.log();var i=this.freeTextures[a].shift();return this.usedTextures[a].push(i),i}return this.numUsedTextures++,this.log(),o===Gt.PACKED_2X2_FLOAT32?r=this.gpgpu.createPackedMatrixTexture(t[0],t[1]):o===Gt.PACKED_2X2_FLOAT16?r=this.gpgpu.createFloat16PackedMatrixTexture(t[0],t[1]):o===Gt.UNPACKED_FLOAT32?r=this.gpgpu.createFloat32MatrixTexture(t[0],t[1]):o===Gt.UNPACKED_FLOAT16?r=this.gpgpu.createFloat16MatrixTexture(t[0],t[1]):o===Gt.PACKED_4X1_UNSIGNED_BYTE&&(r=this.gpgpu.createUnsignedBytesMatrixTexture(t[0],t[1])),this.usedTextures[a].push(r),r},t.prototype.releaseTexture=function(t,e,n,r){if(null!=this.freeTextures){var o=au(e,ou(n,r),r);o in this.freeTextures||(this.freeTextures[o]=[]),this.freeTextures[o].push(t),this.numFreeTextures++,this.numUsedTextures--;var a=this.usedTextures[o],i=a.indexOf(t);if(i<0)throw new Error("Cannot release a texture that was never provided by this texture manager");a.splice(i,1),this.log()}},t.prototype.log=function(){if(this.logEnabled){var t=this.numFreeTextures+this.numUsedTextures;console.log("Free/Used",this.numFreeTextures+" / "+this.numUsedTextures,"("+t+")")}},t.prototype.getNumUsedTextures=function(){return this.numUsedTextures},t.prototype.getNumFreeTextures=function(){return this.numFreeTextures},t.prototype.dispose=function(){var t=this;if(null!=this.freeTextures){for(var e in this.freeTextures)this.freeTextures[e].forEach((function(e){t.gpgpu.deleteMatrixTexture(e)}));for(var e in this.usedTextures)this.usedTextures[e].forEach((function(e){t.gpgpu.deleteMatrixTexture(e)}));this.freeTextures=null,this.usedTextures=null,this.numUsedTextures=0,this.numFreeTextures=0}},t}();function ou(t,e){if(t===zt.UPLOAD)return Gt.PACKED_2X2_FLOAT32;if(t===zt.RENDER||null==t)return function(t){return i().getBool("WEBGL_RENDER_FLOAT32_ENABLED")?t?Gt.PACKED_2X2_FLOAT32:Gt.UNPACKED_FLOAT32:t?Gt.PACKED_2X2_FLOAT16:Gt.UNPACKED_FLOAT16}(e);if(t===zt.DOWNLOAD||t===zt.PIXELS)return Gt.PACKED_4X1_UNSIGNED_BYTE;throw new Error("Unknown logical texture type "+t)}function au(t,e,n){return t[0]+"_"+t[1]+"_"+e+"_"+n}var iu=function(t,e){this.variableNames=["A"];for(var n=new Array(t.length),r=0;r5)throw Error("Tile for rank "+e+" is not yet supported");if(1===e)return"imod(resRC, "+t[0]+")";for(var n=["resRC.x","resRC.y","resRC.z","resRC.w","resRC.u"],r=[],o=0;o= 0.0) ? scale * x : scaleAlpha * (exp(x) - 1.0);\n";var mu="return -x;",yu="return ceil(x);",xu="return floor(x);",bu="return exp(x);",wu="return exp(x) - 1.0;",Cu=lu+"\n return sin(x);\n",Eu=lu+"\n return cos(x);\n",Ru=lu+"\n if (abs(x) > 1.) {\n return NAN;\n }\n return asin(x);\n",Iu=lu+"\n if (abs(x) > 1.) {\n return NAN;\n }\n return acos(x);\n",ku=lu+"\n return atan(x);\n",Su=lu+"return log(x + sqrt(x * x + 1.0));",Au=lu+"\n if (x < 1.0) return NAN;\n return log(x + sqrt(x * x - 1.0));",Tu=lu+"\n if ((x < -1.0) || (x > 1.0)) return NAN;\n return (log(1.0 + x) - log(1.0 - x)) / 2.0;",Du="return x;",Nu="return x;",Fu="\n vec4 result = x * vec4(greaterThanEqual(x, vec4(0.0)));\n bvec4 isNaN = isnan(x);\n\n result.r = isNaN.r ? x.r : result.r;\n result.g = isNaN.g ? x.g : result.g;\n result.b = isNaN.b ? x.b : result.b;\n result.a = isNaN.a ? x.a : result.a;\n\n return result;\n",_u="\n vec4 result = min(x, vec4(6.)) * vec4(greaterThanEqual(x, vec4(0.0)));\n bvec4 isNaN = isnan(x);\n\n result.r = isNaN.r ? x.r : result.r;\n result.g = isNaN.g ? x.g : result.g;\n result.b = isNaN.b ? x.b : result.b;\n result.a = isNaN.a ? x.a : result.a;\n\n return result;\n",Ou="\n vec4 result;\n\n result.r = (x.r >= 0.0) ? x.r : (exp(x.r) - 1.0);\n result.g = (x.g >= 0.0) ? x.g : (exp(x.g) - 1.0);\n result.b = (x.b >= 0.0) ? x.b : (exp(x.b) - 1.0);\n result.a = (x.a >= 0.0) ? x.a : (exp(x.a) - 1.0);\n\n return result;\n",Mu=function(t,e){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t,this.userCode="\n vec4 unaryOperation(vec4 x) {\n "+e+"\n }\n\n void main() {\n vec4 x = getAAtOutCoords();\n vec4 y = unaryOperation(x);\n\n setOutput(y);\n }\n "},Bu=function(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!1,this.outputShape=t;var e=t.length,n=Xa("rc",e),r=ui(e),o=function(t,e){if(1===t)return"rc";for(var n="",r=0;r0?[4,Promise.all(a)]:[3,2];case 1:return c=r.sent(),u.kernelMs=w(c),u.getExtraProfileInfo=function(){return c.map((function(t,e){return{name:s[e],ms:t}})).map((function(t){return t.name+": "+t.ms})).join(", ")},[3,3];case 2:u.kernelMs={error:"WebGL query timers are not supported in this environment."},r.label=3;case 3:return this.uploadWaitMs=0,this.downloadWaitMs=0,[2,u]}}))}))},o.prototype.memory=function(){return{unreliable:!1,numBytesInGPU:this.numBytesInGPU}},o.prototype.startTimer=function(){return i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_RELIABLE")>0?this.gpgpu.beginQuery():{startMs:et(),endMs:null}},o.prototype.endTimer=function(t){return i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_RELIABLE")>0?(this.gpgpu.endQuery(),t):(t.endMs=et(),t)},o.prototype.getQueryTime=function(t){return n(this,void 0,void 0,(function(){var e;return r(this,(function(n){return i().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_RELIABLE")>0?[2,this.gpgpu.waitForQueryAndGetTime(t)]:[2,(e=t).endMs-e.startMs]}))}))},o.prototype.disposeData=function(t){if(!this.pendingDisposal.has(t)){if(this.pendingRead.has(t))return this.pendingDisposal.add(t),void this.pendingDeletes++;if(this.texData.has(t)){this.releaseGPUData(t);var e=this.texData.get(t).complexTensors;null!=e&&(e.real.dispose(),e.imag.dispose()),this.texData.delete(t)}}},o.prototype.releaseGPUData=function(t){var e=this.texData.get(t),n=e.texture,r=e.dtype,o=e.texShape,a=e.usage,i=e.isPacked,s=e.slice,u=s&&s.origDataId||t,c=this.dataRefCount.get(u);c>1?this.dataRefCount.set(u,c-1):(this.dataRefCount.delete(u),null!=n&&(this.numBytesInGPU-=this.computeBytes(o,r),this.textureManager.releaseTexture(n,o,a,i)));var l=this.texData.get(t);l.texture=null,l.texShape=null,l.isPacked=!1,l.slice=null},o.prototype.getTexture=function(t){return this.uploadToGPU(t),this.texData.get(t).texture},o.prototype.getDataInfo=function(t){return this.texData.get(t)},o.prototype.getCPUBackend=function(){return i().getBool("WEBGL_CPU_FORWARD")?(null==this.cpuBackend&&(this.cpuBackend=Lt.findBackend("cpu")),this.cpuBackend):null},o.prototype.shouldExecuteOnCPU=function(t,e){var n=this;return void 0===e&&(e=128),null!=this.getCPUBackend()&&t.every((function(t){return null==n.texData.get(t.dataId).texture&&k(t.shape)i().getNumber("WEBGL_MAX_TEXTURES_IN_SHADER")){var o=Math.floor(t.length/2),a=this.concat(t.slice(0,o),e),s=this.concat(t.slice(o),e);return this.concat([a,s],e)}if(i().getBool("WEBGL_PACK_ARRAY_OPERATIONS")&&t[0].rank>1){var u=new Fi(t.map((function(t){return t.shape})),e);return this.compileAndRun(u,t)}var c=Sn(t.map((function(t){return t.shape})),e),l=t.map((function(t){return t.as2D(-1,k(t.shape.slice(e)))})),h=new Ni(l.map((function(t){return t.shape})));return this.compileAndRun(h,l).reshape(c)},o.prototype.neg=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.neg(t);if(i().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,mu,t.dtype);var e=new cu(t.shape,mu);return this.compileAndRun(e,[t])},o.prototype.batchMatMul=function(t,e,n,r){var o=n?t.shape[2]:t.shape[1],a=r?e.shape[1]:e.shape[2],i=n?t.shape[1]:t.shape[2],s=t.shape[0];if((1===o||1===a)&&i>1e3){n&&(t=ua(t,[0,2,1])),r&&(e=ua(e,[0,2,1]));var u=1===a?t:t.as3D(s,i,1),c=1===a?2:1,l=1===a?e.as3D(s,1,i):e;return this.multiply(u,l).sum(c,!0)}var h=Tt(t.dtype,e.dtype),f=new _s(t.shape,[s,o,a],n,r);return this.compileAndRun(f,[t,e],h)},o.prototype.fusedBatchMatMul=function(t){var e=t.a,n=t.b,r=t.transposeA,o=t.transposeB,a=t.bias,i=t.activation,s=t.preluActivationWeights,u=r?e.shape[2]:e.shape[1],c=o?n.shape[1]:n.shape[2],l=e.shape[0],h=Tt(e.dtype,n.dtype),f=null!=a,d=null!=s,p=i?Lu(i,!0):null,v=new _s(e.shape,[l,u,c],r,o,f,p,d),g=[e,n];return a&&g.push(a),s&&g.push(s),this.compileAndRun(v,g,h)},o.prototype.multiply=function(t,e){if("complex64"===t.dtype){var n=this.texData.get(t.dataId),r=this.texData.get(e.dataId),o=new yi(gi,t.shape,e.shape),a=new yi(mi,t.shape,e.shape),s=[this.makeComplexComponentTensorInfo(t,n.complexTensors.real),this.makeComplexComponentTensorInfo(t,n.complexTensors.imag),this.makeComplexComponentTensorInfo(e,r.complexTensors.real),this.makeComplexComponentTensorInfo(e,r.complexTensors.imag)],u=this.compileAndRun(o,s),c=this.compileAndRun(a,s),l=this.complex(u,c);return u.dispose(),c.dispose(),l}if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.multiply(t,e);if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,wi,t.dtype);var h=new Ri(wi,t.shape,e.shape);return this.compileAndRun(h,[t,e],t.dtype)},o.prototype.batchNormalization=function(t,e,n,r,o,a){var s=[t,e,n],u=null;null!=a&&(u=a.shape,s.push(a));var c=null;if(null!=o&&(c=o.shape,s.push(o)),i().getBool("WEBGL_PACK_NORMALIZATION")){var l=new vi(t.shape,e.shape,n.shape,u,c,r);return this.compileAndRun(l,s)}var h=new pi(t.shape,e.shape,n.shape,u,c,r);return this.compileAndRun(h,s)},o.prototype.localResponseNormalization4D=function(t,e,n,r,o){var a=i().getBool("WEBGL_PACK_NORMALIZATION")?new Ds(t.shape,e,n,r,o):new As(t.shape,e,n,r,o);return this.compileAndRun(a,[t])},o.prototype.LRNGrad=function(t,e,n,r,o,a,i){var s=new Ts(e.shape,r,o,a,i);return this.compileAndRun(s,[e,n,t])},o.prototype.tile=function(t,e){if("string"===t.dtype){var n=this.readSync(t.dataId).map((function(t){return ot(t)}));return Va(er(t.shape,t.dtype,n),e)}var r=new iu(t.shape,e);return this.compileAndRun(r,[t])},o.prototype.pad=function(t,e,n){var r=i().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new Ls(t.shape,e,n):new Ps(t.shape,e,n);return this.compileAndRun(r,[t])},o.prototype.gather=function(t,e,n){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.gather(t,e,n);var r=new as(t.shape,e.size,n);return this.compileAndRun(r,[t,e])},o.prototype.batchToSpaceND=function(t,e,n){C(t.rank<=4,(function(){return"batchToSpaceND for rank > 4 with a WebGL backend not implemented yet"}));var r=e.reduce((function(t,e){return t*e})),o=pr(t.shape,e,r),a=vr(o.length,e.length),i=gr(t.shape,e,r),s=mr(n,e.length),u=yr(i,n,e.length);return ua(t.reshape(o),a).reshape(i).slice(s,u)},o.prototype.spaceToBatchND=function(t,e,n){C(t.rank<=4,(function(){return"spaceToBatchND for rank > 4 with a WebGL backend not implemented yet"}));var r=e.reduce((function(t,e){return t*e})),o=[[0,0]];o.push.apply(o,n);for(var a=1+e.length;ae||n===t?r=!0:n=Y(t,n+1);return n}(i,o),u=new Qs({windowSize:s,inSize:i,batchSize:a,numSegments:o},e),c=this.compileAndRun(u,[t,n],r);return c.shape[1]===o?c:(n=Kn(0,o).tile([i/s]),this.segOpCompute(c,e,n,r,o))},o.prototype.argMinMaxReduce=function(t,e,n){var r=[e];if(Cn("arg"+n.charAt(0).toUpperCase()+n.slice(1),r,t.rank),!i().getBool("WEBGL_PACK_REDUCE")||t.rank<=2){var o=bn(t.shape,r),a=o[0],s=k(o[1]),u=t.as2D(-1,s);return this.argReduce(u,n).reshape(a)}return this.argReducePacked(t,n)},o.prototype.argMin=function(t,e){return this.argMinMaxReduce(t,e,"min")},o.prototype.argMax=function(t,e){return this.argMinMaxReduce(t,e,"max")},o.prototype.cumsum=function(t,e,n,r){if(e!==t.rank-1)throw new Error("WebGL cumsum shader expects an inner-most axis="+(t.rank-1)+" but got axis="+e);var o=new qi(t.shape,n,r);return this.compileAndRun(o,[t])},o.prototype.equal=function(t,e){if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(equal(a, b));\n","bool");var n=new Ri("return float(a == b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},o.prototype.notEqual=function(t,e){if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(notEqual(a, b));\n","bool");var n=new Ri("return float(a != b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},o.prototype.less=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.less(t,e);if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(lessThan(a, b));\n","bool");var n=new Ri("return float(a < b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},o.prototype.lessEqual=function(t,e){if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(lessThanEqual(a, b));\n","bool");var n=new Ri("return float(a <= b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},o.prototype.greater=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.greater(t,e);if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(greaterThan(a, b));\n","bool");var n=new Ri("return float(a > b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},o.prototype.greaterEqual=function(t,e){if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(greaterThanEqual(a, b));\n","bool");var n=new Ri("return float(a >= b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},o.prototype.logicalNot=function(t){var e=new cu(t.shape,"return float(!(x >= 1.0));");return this.compileAndRun(e,[t])},o.prototype.logicalAnd=function(t,e){if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(\n vec4(greaterThanEqual(a, vec4(1.0))) *\n vec4(greaterThanEqual(b, vec4(1.0))));\n","bool");var n=new Ri("return float(a >= 1.0 && b >= 1.0);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},o.prototype.logicalOr=function(t,e){if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return min(\n vec4(greaterThanEqual(a, vec4(1.0))) +\n vec4(greaterThanEqual(b, vec4(1.0))),\n vec4(1.0));\n","bool");var n=new Ri("return float(a >= 1.0 || b >= 1.0);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},o.prototype.select=function(t,e,n){var r=new Js(t.rank,e.shape,e.rank);return this.compileAndRun(r,[t,e,n],Tt(e.dtype,n.dtype))},o.prototype.where=function(t){dn("tf.where() in webgl locks the UI thread. Call tf.whereAsync() instead");var e=t.dataSync();return Ga(t.shape,e)},o.prototype.topk=function(t,e,n){return za(t.dataSync(),t.shape,t.dtype,e)},o.prototype.min=function(t,e){Cn("min",e,t.rank);var n=bn(t.shape,e),r=n[0],o=k(n[1]),a=t.as2D(-1,o);return this.reduce(a,"min",a.dtype).reshape(r)},o.prototype.minimum=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.minimum(t,e);var n=i().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Si("\n vec4 result = vec4(min(a, b));\n vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Ri("\n if (isnan(a)) return a;\n if (isnan(b)) return b;\n\n return min(a, b);\n",t.shape,e.shape);return this.compileAndRun(n,[t,e])},o.prototype.mod=function(t,e){var n=i().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Si("\n vec4 result = mod(a, b);\n vec4 isNaN = vec4(equal(b, vec4(0.0)));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Ri("if (b == 0.0) return NAN;\n return mod(a, b);",t.shape,e.shape);return this.compileAndRun(n,[t,e])},o.prototype.max=function(t,e){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.max(t,e);Cn("max",e,t.rank);var n=bn(t.shape,e),r=n[0],o=k(n[1]),a=t.as2D(-1,o);return this.reduce(a,"max",a.dtype).reshape(r)},o.prototype.maximum=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.maximum(t,e);var n=i().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Si("\n vec4 result = vec4(max(a, b));\n vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Ri("\n if (isnan(a)) return a;\n if (isnan(b)) return b;\n\n return max(a, b);\n",t.shape,e.shape);return this.compileAndRun(n,[t,e])},o.prototype.all=function(t,e){Cn("all",e,t.rank);var n=bn(t.shape,e),r=n[0],o=k(n[1]),a=t.as2D(-1,o);return this.reduce(a,"all",a.dtype).reshape(r)},o.prototype.any=function(t,e){Cn("any",e,t.rank);var n=bn(t.shape,e),r=n[0],o=k(n[1]),a=t.as2D(-1,o);return this.reduce(a,"any",a.dtype).reshape(r)},o.prototype.floorDiv=function(t,e){if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n ivec4 ia = round(a);\n ivec4 ib = round(b);\n bvec4 cond = notEqual(ib, ivec4(0));\n ivec4 result = ivec4(0);\n vec4 s = sign(a) * sign(b);\n\n // Windows (D3D) wants guaranteed non-zero int division at compile-time.\n if (cond[0]) {\n result[0] = idiv(ia[0], ib[0], s[0]);\n }\n if (cond[1]) {\n result[1] = idiv(ia[1], ib[1], s[1]);\n }\n if (cond[2]) {\n result[2] = idiv(ia[2], ib[2], s[2]);\n }\n if (cond[3]) {\n result[3] = idiv(ia[3], ib[3], s[3]);\n }\n return vec4(result);\n","int32");var n=new Ri("\n float s = sign(a) * sign(b);\n int ia = round(a);\n int ib = round(b);\n if (ib != 0) {\n // Windows (D3D) wants guaranteed non-zero int division at compile-time.\n return float(idiv(ia, ib, s));\n } else {\n return NAN;\n }\n",t.shape,e.shape);return this.compileAndRun(n,[t,e],"int32")},o.prototype.add=function(t,e){if("complex64"===t.dtype&&"complex64"===e.dtype)return this.complexSeparableBinaryOp(t,e,xi);if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.add(t,e);var n=Tt(t.dtype,e.dtype);if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,xi,n);var r=new Ri(xi,t.shape,e.shape);return this.compileAndRun(r,[t,e],n)},o.prototype.packedUnaryOp=function(t,e,n){var r=new Mu(t.shape,e);return this.compileAndRun(r,[t],n)},o.prototype.packedBinaryOp=function(t,e,n,r,o){void 0===o&&(o=!1);var a=new Si(n,t.shape,e.shape,o);return this.compileAndRun(a,[t,e],r)},o.prototype.complexSeparableBinaryOp=function(t,e,n){var r=this,o=this.texData.get(t.dataId),a=this.texData.get(e.dataId),i=[[o.complexTensors.real,a.complexTensors.real],[o.complexTensors.imag,a.complexTensors.imag]].map((function(o){var a=o[0],i=o[1],s=r.makeComplexComponentTensorInfo(t,a),u=r.makeComplexComponentTensorInfo(e,i),c=new Ri(n,t.shape,e.shape);return r.compileAndRun(c,[s,u],Tt(a.dtype,i.dtype))})),s=i[0],u=i[1],c=this.complex(s,u);return s.dispose(),u.dispose(),c},o.prototype.makeComplexComponentTensorInfo=function(t,e){return{dataId:e.dataId,dtype:e.dtype,shape:t.shape}},o.prototype.addN=function(t){if(1===t.length)return t[0];if(t.length>i().get("WEBGL_MAX_TEXTURES_IN_SHADER")){var e=Math.floor(t.length/2),n=this.addN(t.slice(0,e)),r=this.addN(t.slice(e));return this.addN([n,r])}var o=t.map((function(t){return t.dtype})).reduce((function(t,e){return Tt(t,e)})),a=t.map((function(t){return t.shape})),s=i().getBool("WEBGL_PACK")?new qa(t[0].shape,a):new Ha(t[0].shape,a);return this.compileAndRun(s,t,o)},o.prototype.subtract=function(t,e){if("complex64"===t.dtype&&"complex64"===e.dtype)return this.complexSeparableBinaryOp(t,e,bi);if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.subtract(t,e);var n=Tt(t.dtype,e.dtype);if(i().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,bi,t.dtype);var r=new Ri(bi,t.shape,e.shape);return this.compileAndRun(r,[t,e],n)},o.prototype.pow=function(t,e){var n=i().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Si("\n // isModRound1 has 1 for components with round(mod(b, 2.0)) == 1, 0 otherwise.\n vec4 isModRound1 = vec4(equal(round(mod(b, 2.0)), ivec4(1)));\n vec4 multiplier = sign(a) * isModRound1 + (vec4(1.0) - isModRound1);\n vec4 result = multiplier * pow(abs(a), b);\n\n // Ensure that a^0 = 1, including 0^0 = 1 as this correspond to TF and JS\n bvec4 isExpZero = equal(b, vec4(0.0));\n result.r = isExpZero.r ? 1.0 : result.r;\n result.g = isExpZero.g ? 1.0 : result.g;\n result.b = isExpZero.b ? 1.0 : result.b;\n result.a = isExpZero.a ? 1.0 : result.a;\n\n vec4 isNaN = vec4(lessThan(a, vec4(0.0))) * vec4(lessThan(floor(b), b));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Ri("\nif(a < 0.0 && floor(b) < b){\n return NAN;\n}\nif (b == 0.0) {\n return 1.0;\n}\nreturn (round(mod(b, 2.0)) != 1) ?\n pow(abs(a), b) : sign(a) * pow(abs(a), b);\n",t.shape,e.shape),r=Tt(t.dtype,e.dtype);return this.compileAndRun(n,[t,e],r)},o.prototype.ceil=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.ceil(t);if(i().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,yu,t.dtype);var e=new cu(t.shape,yu);return this.compileAndRun(e,[t])},o.prototype.floor=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.floor(t);if(i().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,xu,t.dtype);var e=new cu(t.shape,xu);return this.compileAndRun(e,[t])},o.prototype.sign=function(t){var e=new cu(t.shape,"\n if (isnan(x)) { return 0.0; }\n return sign(x);\n");return this.compileAndRun(e,[t])},o.prototype.isNaN=function(t){var e=new cu(t.shape,"return float(isnan(x));");return this.compileAndRun(e,[t],"bool")},o.prototype.isInf=function(t){var e=new cu(t.shape,"return float(isinf(x));");return this.compileAndRun(e,[t],"bool")},o.prototype.isFinite=function(t){var e=new cu(t.shape,"return float(!isnan(x) && !isinf(x));");return this.compileAndRun(e,[t],"bool")},o.prototype.round=function(t){var e=new cu(t.shape,"\n // OpenGL ES does not support round function.\n // The algorithm is based on banker's rounding.\n float base = floor(x);\n if ((x - base) < 0.5) {\n return floor(x);\n } else if ((x - base) > 0.5) {\n return ceil(x);\n } else {\n if (mod(base, 2.0) == 0.0) {\n return base;\n } else {\n return base + 1.0;\n }\n }\n");return this.compileAndRun(e,[t])},o.prototype.exp=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.exp(t);if(i().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,bu,t.dtype);var e=new cu(t.shape,bu);return this.compileAndRun(e,[t])},o.prototype.expm1=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.expm1(t);if(i().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,wu,t.dtype);var e=new cu(t.shape,wu);return this.compileAndRun(e,[t])},o.prototype.softmax=function(t,e){var n=O([e],t.shape),r=this.max(t,n),o=wn(r.shape,n),a=this.subtract(t,r.reshape(o)),i=this.exp(a),s=this.sum(i,n).reshape(o);return Bo(i,s)},o.prototype.log=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.log(t);if(i().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,"\n vec4 result = log(x);\n vec4 isNaN = vec4(lessThan(x, vec4(0.0)));\n result.r = isNaN.r == 1.0 ? NAN : result.r;\n result.g = isNaN.g == 1.0 ? NAN : result.g;\n result.b = isNaN.b == 1.0 ? NAN : result.b;\n result.a = isNaN.a == 1.0 ? NAN : result.a;\n\n return result;\n",t.dtype);var e=new cu(t.shape,"if (x < 0.0) return NAN;\n return log(x);");return this.compileAndRun(e,[t])},o.prototype.log1p=function(t){var e=new cu(t.shape,"return log(1.0 + x);");return this.compileAndRun(e,[t])},o.prototype.sqrt=function(t){var e=new cu(t.shape,"return sqrt(x);");return this.compileAndRun(e,[t])},o.prototype.rsqrt=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.rsqrt(t);var e=new cu(t.shape,"return inversesqrt(x);");return this.compileAndRun(e,[t])},o.prototype.reciprocal=function(t){var e=new cu(t.shape,"return 1.0 / x;");return this.compileAndRun(e,[t])},o.prototype.relu=function(t){var e;return e=i().getBool("WEBGL_PACK")?new Mu(t.shape,Fu):new cu(t.shape,du),this.compileAndRun(e,[t])},o.prototype.relu6=function(t){var e;return e=i().getBool("WEBGL_PACK")?new Mu(t.shape,_u):new cu(t.shape,pu),this.compileAndRun(e,[t])},o.prototype.prelu=function(t,e){var n=i().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Si(ki,t.shape,e.shape):new Ri(Ei,t.shape,e.shape);return this.compileAndRun(n,[t,e])},o.prototype.elu=function(t){if(i().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,Ou,t.dtype);var e=new cu(t.shape,vu);return this.compileAndRun(e,[t])},o.prototype.eluDer=function(t,e){var n=i().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Si("\n vec4 bGTEZero = vec4(greaterThanEqual(b, vec4(0.)));\n return (bGTEZero * a) + ((vec4(1.0) - bGTEZero) * (a * (b + vec4(1.0))));\n",t.shape,e.shape):new Ri("return (b >= 1.0) ? a : a * (b + 1.0);",t.shape,e.shape);return this.compileAndRun(n,[t,e])},o.prototype.selu=function(t){var e=new cu(t.shape,gu);return this.compileAndRun(e,[t])},o.prototype.int=function(t){var e=new cu(t.shape,"return float(int(x));");return this.compileAndRun(e,[t],"int32")},o.prototype.clip=function(t,e,n){var r,o=(r=i().getBool("WEBGL_PACK_CLIP")?new Ti(t.shape):new Ai(t.shape)).getCustomSetupFunc(e,n);return this.compileAndRun(r,[t],null,o)},o.prototype.abs=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.abs(t);if(i().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,fu,t.dtype);var e=new cu(t.shape,fu);return this.compileAndRun(e,[t])},o.prototype.complexAbs=function(t){var e=this.texData.get(t.dataId),n=new Di(t.shape),r=[this.makeComplexComponentTensorInfo(t,e.complexTensors.real),this.makeComplexComponentTensorInfo(t,e.complexTensors.imag)];return this.compileAndRun(n,r)},o.prototype.sigmoid=function(t){var e=new cu(t.shape,"return 1.0 / (1.0 + exp(-1.0 * x));");return this.compileAndRun(e,[t])},o.prototype.softplus=function(t){var e=new cu(t.shape,"\n float epsilon = 1.1920928955078125e-7;\n float threshold = log(epsilon) + 2.0;\n\n bool too_large = x > -threshold;\n bool too_small = x < threshold;\n\n float result;\n float exp_x = exp(x);\n\n if (too_large){\n result = x;\n }\n else if (too_small){\n result = exp_x;\n }\n else{\n result = log(exp_x + 1.0);\n }\n return result;\n");return this.compileAndRun(e,[t])},o.prototype.sin=function(t){var e=new cu(t.shape,Cu);return this.compileAndRun(e,[t])},o.prototype.cos=function(t){var e=new cu(t.shape,Eu);return this.compileAndRun(e,[t])},o.prototype.tan=function(t){var e=new cu(t.shape,"return tan(x);");return this.compileAndRun(e,[t])},o.prototype.asin=function(t){var e=new cu(t.shape,Ru);return this.compileAndRun(e,[t])},o.prototype.acos=function(t){var e=new cu(t.shape,Iu);return this.compileAndRun(e,[t])},o.prototype.atan=function(t){var e=new cu(t.shape,ku);return this.compileAndRun(e,[t])},o.prototype.atan2=function(t,e){var n=i().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Si("\n vec4 result = atan(a, b);\n vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Ri("\n if (isnan(a)) return a;\n if (isnan(b)) return b;\n\n return atan(a, b);\n",t.shape,e.shape);return this.compileAndRun(n,[t,e])},o.prototype.sinh=function(t){var e=new cu(t.shape,"\n float e2x = exp(x);\n return (e2x - 1.0 / e2x) / 2.0;\n");return this.compileAndRun(e,[t])},o.prototype.cosh=function(t){var e=new cu(t.shape,"\n float e2x = exp(-x);\n return (e2x + 1.0 / e2x) / 2.0;\n");return this.compileAndRun(e,[t])},o.prototype.tanh=function(t){var e=new cu(t.shape,"\n float e2x = exp(-2.0 * abs(x));\n return sign(x) * (1.0 - e2x) / (1.0 + e2x);\n");return this.compileAndRun(e,[t])},o.prototype.asinh=function(t){var e=new cu(t.shape,Su);return this.compileAndRun(e,[t])},o.prototype.acosh=function(t){var e=new cu(t.shape,Au);return this.compileAndRun(e,[t])},o.prototype.atanh=function(t){var e=new cu(t.shape,Tu);return this.compileAndRun(e,[t])},o.prototype.erf=function(t){var e=new cu(t.shape,'\n // Error function is calculated approximately with elementary function.\n // See "Handbook of Mathematical Functions with Formulas,\n // Graphs, and Mathematical Tables", Abramowitz and Stegun.\n float p = 0.3275911;\n float a1 = 0.254829592;\n float a2 = -0.284496736;\n float a3 = 1.421413741;\n float a4 = -1.453152027;\n float a5 = 1.061405429;\n\n float sign = sign(x);\n x = abs(x);\n float t = 1.0 / (1.0 + p * x);\n return sign * (1.0 - (((((a5*t + a4)*t) + a3)*t + a2)*t + a1)*t*exp(-x*x));\n');return this.compileAndRun(e,[t])},o.prototype.step=function(t,e){var n=new cu(t.shape,function(t){return void 0===t&&(t=0),lu+"\n return x > 0.0 ? 1.0 : float("+t+");\n "}(e));return this.compileAndRun(n,[t])},o.prototype.conv2dByMatMul=function(t,e,n,r,o,a){var s=t.shape,u=this.texData.get(t.dataId),c=n.inChannels,l=s[0]*s[1]*s[2],h=n.outChannels,f="channelsLast"===n.dataFormat,d=(1===l||1===h)&&c>1e3,p=s[2]%2!=0&&!!u.isPacked;if(d||!i().getBool("WEBGL_LAZILY_UNPACK")||!i().getBool("WEBGL_PACK_BINARY_OPERATIONS")||!p){var v=f?s[0]*s[1]*s[2]:s[0]*s[2]*s[3],g=this.reshape(t,[1,v,n.inChannels]),m=this.reshape(e,[1,n.inChannels,n.outChannels]);return this.reshape(this.fusedBatchMatMul({a:g,b:m,transposeA:!1,transposeB:!1,bias:r,activation:o,preluActivationWeights:a}),n.outShape)}var y=f?s[0]*s[1]*(s[2]+1):s[0]*s[2]*(s[3]+1),x={dataId:t.dataId,shape:[1,y,n.inChannels],dtype:t.dtype},b=u.shape;u.shape=u.shape.slice(),u.shape[u.shape.length-2]++,C(_e(u.shape,x.shape),(function(){return"packed reshape "+u.shape+" to "+x.shape+" isn't free"}));var w=this.reshape(e,[1,n.inChannels,n.outChannels]),E=this.fusedBatchMatMul({a:x,b:w,transposeA:!1,transposeB:!1,bias:r,activation:o,preluActivationWeights:a}),R=this.texData.get(E.dataId);return C(R.isPacked,(function(){return"batchMatMul result is expected to be packed"})),u.shape=b,R.shape=n.outShape,Lt.makeTensorFromDataId(E.dataId,n.outShape,E.dtype)},o.prototype.conv2dWithIm2Row=function(t,e,n,r,o,a){var i=n.filterWidth,s=n.filterHeight,u=n.inChannels,c=n.outWidth,l=n.outHeight,h="channelsLast"===n.dataFormat,f=i*s*u,d=l*c,p=[f,d],v=t.squeeze([0]),g=e.reshape([1,f,-1]),m=new Ss(p,v.shape,n),y=this.compileAndRun(m,[v]).reshape([1,p[0],p[1]]),x=null!=r,b=null!=a,w=o?Lu(o,!0):null,C=new _s(y.shape,[1,d,n.outChannels],!0,!1,x,w,b),E=[y,g];r&&E.push(r),b&&E.push(a);var R=this.compileAndRun(C,E);return h?R.reshape([1,l,c,n.outChannels]):R.reshape([1,n.outChannels,l,c])},o.prototype.fusedConv2d=function(t){var e=t.input,n=t.filter,r=t.convInfo,o=t.bias,a=t.activation,s=t.preluActivationWeights;if(1===r.filterHeight&&1===r.filterWidth&&1===r.dilationHeight&&1===r.dilationWidth&&1===r.strideHeight&&1===r.strideWidth&&("SAME"===r.padInfo.type||"VALID"===r.padInfo.type))return this.conv2dByMatMul(e,n,r,o,a,s);if(i().getBool("WEBGL_CONV_IM2COL")&&1===e.shape[0])return this.conv2dWithIm2Row(e,n,r,o,a,s);var u=null!=o,c=null!=s,l=a?Lu(a,!1):null,h=new Ui(r,u,l,c),f=[e,n];return o&&f.push(o),s&&f.push(s),this.compileAndRun(h,f)},o.prototype.conv2d=function(t,e,n){if(1===n.filterHeight&&1===n.filterWidth&&1===n.dilationHeight&&1===n.dilationWidth&&1===n.strideHeight&&1===n.strideWidth&&("SAME"===n.padInfo.type||"VALID"===n.padInfo.type))return this.conv2dByMatMul(t,e,n);if(i().getBool("WEBGL_CONV_IM2COL")&&1===t.shape[0])return this.conv2dWithIm2Row(t,e,n);var r=new Ui(n);return this.compileAndRun(r,[t,e])},o.prototype.conv2dDerInput=function(t,e,n){var r=new Mi(n);return this.compileAndRun(r,[t,e])},o.prototype.conv2dDerFilter=function(t,e,n){var r=new Oi(n);return this.compileAndRun(r,[t,e])},o.prototype.fusedDepthwiseConv2D=function(t){var e,n=t.input,r=t.filter,o=t.convInfo,a=t.bias,s=t.activation,u=t.preluActivationWeights,c=i().getBool("WEBGL_PACK_DEPTHWISECONV")&&o.strideWidth<=2&&o.outChannels/o.inChannels==1,l=s?Lu(s,c):null,h=[n,r],f=null!=a,d=null!=u;return f&&h.push(a),d&&h.push(u),c?(e=new Gi(o,f,l,d),this.compileAndRun(e,h)):(e=new zi(o,f,l,d),this.compileAndRun(e,h))},o.prototype.depthwiseConv2D=function(t,e,n){var r;return i().getBool("WEBGL_PACK_DEPTHWISECONV")&&n.strideWidth<=2&&n.outChannels/n.inChannels==1?(r=new Gi(n),this.compileAndRun(r,[t,e])):(r=new zi(n),this.compileAndRun(r,[t,e]))},o.prototype.depthwiseConv2DDerInput=function(t,e,n){var r=new Wi(n);return this.compileAndRun(r,[t,e])},o.prototype.depthwiseConv2DDerFilter=function(t,e,n){var r=new Li(n);return this.compileAndRun(r,[t,e])},o.prototype.conv3d=function(t,e,n){var r=new Vi(n);return this.compileAndRun(r,[t,e])},o.prototype.conv3dDerInput=function(t,e,n){var r=new Pi(n);return this.compileAndRun(r,[t,e])},o.prototype.conv3dDerFilter=function(t,e,n){var r=new Bi(n);return this.compileAndRun(r,[t,e])},o.prototype.maxPool=function(t,e){var n=new Ws(e,"max",!1);return this.compileAndRun(n,[t])},o.prototype.avgPool=function(t,e){var n=new Ws(e,"avg",!1);return this.compileAndRun(n,[t],"float32")},o.prototype.maxPoolBackprop=function(t,e,n,r){var o=new Ws(r,"max",!0),a=this.compileAndRun(o,[e]),i=new Ns(r),s=this.compileAndRun(i,[t,a],e.dtype);return a.dispose(),s},o.prototype.avgPoolBackprop=function(t,e,n){var r=new fi(n);return this.compileAndRun(r,[t],e.dtype)},o.prototype.cast=function(t,e){return Ra(t,e,this)},o.prototype.unstack=function(t,e){for(var n=t.shape[e],r=new Array(t.rank-1),o=0,a=0;a1,(function(){return"blockSize should be > 1 for depthToSpace, but was: "+e}));var r=t.shape[0],o="NHWC"===n?t.shape[1]:t.shape[2],a="NHWC"===n?t.shape[2]:t.shape[3],i="NHWC"===n?t.shape[3]:t.shape[1],s=o*e,u=a*e,c=i/(e*e),l=new Yi("NHWC"===n?[r,s,u,c]:[r,c,s,u],e,n);return this.compileAndRun(l,[t])},o.prototype.split=function(t,e,n){return Ua(t,e,n)},o.prototype.scatterND=function(t,e,n){var r=Go(0,t,n),o=r.sliceRank,a=r.numUpdates,i=r.sliceSize,s=r.strides,u=r.outputSize,c=[u/i,i],l=t.reshape([a,o]),h=e.reshape([a,i]);if(0===u)return Ia(Fn([]),n);var f=On(0),d=new $s(a,o,l.rank,h.rank,s,c);return this.compileAndRun(d,[h,l,f]).reshape(n)},o.prototype.sparseToDense=function(t,e,n,r){var o=Go(0,t,n),a=o.sliceRank,i=o.numUpdates,s=o.strides,u=o.outputSize,c=new $s(i,a,t.rank,e.rank,s,[u,1],!1);return this.compileAndRun(c,[e,t,r]).reshape(n)},o.prototype.fft=function(t){return this.fftImpl(t,!1)},o.prototype.ifft=function(t){return this.fftImpl(t,!0)},o.prototype.fftImpl=function(t,e){var n=this.texData.get(t.dataId),r=new rs(es,t.shape,e),o=new rs(ns,t.shape,e),a=[this.makeComplexComponentTensorInfo(t,n.complexTensors.real),this.makeComplexComponentTensorInfo(t,n.complexTensors.imag)],i=this.compileAndRun(r,a),s=this.compileAndRun(o,a),u=this.complex(i,s).as2D(t.shape[0],t.shape[1]);return i.dispose(),s.dispose(),u},o.prototype.gatherND=function(t,e){var n=e.shape,r=n[n.length-1],o=Po(t,e),a=o[0],i=o[1],s=o[2],u=o[3],c=e.reshape([i,r]),l=t.reshape([t.size/s,s]),h=new is(r,u,[i,s]);return this.compileAndRun(h,[l,c]).reshape(a)},o.prototype.fill=function(t,e,n){if("string"===(n=n||j(e))){var r=P(n,k(t));return r.fill(e),Lt.makeTensor(r,t,n,this)}var o=new os(t,e),a=o.getCustomSetupFunc(e);return this.compileAndRun(o,[],n,a)},o.prototype.onesLike=function(t){if("string"===t.dtype)throw new Error("onesLike is not supported under string dtype");return this.fill(t.shape,1,t.dtype)},o.prototype.zerosLike=function(t){return this.fill(t.shape,"string"===t.dtype?"":0,t.dtype)},o.prototype.linspace=function(t,e,n){return ka(t,e,n)},o.prototype.makeTensorInfo=function(t,e){var n=this.write(null,t,e);return this.texData.get(n).usage=null,{dataId:n,shape:t,dtype:e}},o.prototype.makeOutput=function(t,e){var n=this.makeTensorInfo(t,e).dataId;return Lt.makeTensorFromDataId(n,t,e,this)},o.prototype.unpackTensor=function(t){var e=new Bu(t.shape);return this.runWebGLProgram(e,[t],t.dtype)},o.prototype.packTensor=function(t){var e=new Bs(t.shape);return this.runWebGLProgram(e,[t],t.dtype,null,!0)},o.prototype.packedReshape=function(t,e){var n=[Ae(t.shape)].concat(Te(t.shape)),r={dtype:t.dtype,shape:n,dataId:t.dataId},o=[Ae(e)].concat(Te(e)),a=new zs(o,n),i=this.runWebGLProgram(a,[r],t.dtype,null,!0);return{dataId:i.dataId,shape:e,dtype:i.dtype}},o.prototype.decode=function(t){var e,n=this.texData.get(t),r=n.isPacked,o=n.shape,a=n.dtype,i=De(o);e=r?new Xi(i):new ji(i);return{dtype:a,shape:o,dataId:this.runWebGLProgram(e,[{shape:i,dtype:a,dataId:t}],a,null,!0).dataId}},o.prototype.runWebGLProgram=function(t,e,n,r,o){var a=this;void 0===o&&(o=!1);var s=this.makeTensorInfo(t.outputShape,n),u=this.texData.get(s.dataId);if(t.packedOutput&&(u.isPacked=!0),t.outPackingScheme===Vt.DENSE){var c=Yt(t.outputShape);u.texShape=c.map((function(t){return 2*t}))}if(null!=t.outTexUsage&&(u.usage=t.outTexUsage),0===k(s.shape))return u.values=B(s.dtype,0),s;var l=[],h=e.map((function(e){if("complex64"===e.dtype)throw new Error("GPGPUProgram does not support complex64 input. For complex64 dtypes, please separate the program into real and imaginary parts.");var n=a.texData.get(e.dataId);if(null==n.texture){if(!t.packedInputs&&k(e.shape)<=i().getNumber("WEBGL_SIZE_UPLOAD_UNIFORM"))return{shape:e.shape,texData:null,isUniform:!0,uniformValues:n.values};t.packedInputs&&(n.isPacked=!0,n.shape=e.shape)}else if(!!n.isPacked!=!!t.packedInputs)e=n.isPacked?a.unpackTensor(e):a.packTensor(e),l.push(e),n=a.texData.get(e.dataId);else if(n.isPacked&&!_e(n.shape,e.shape)){var r=e,o=e.shape;e.shape=n.shape,e=a.packedReshape(e,o),l.push(e),n=a.texData.get(e.dataId),r.shape=o}return a.uploadToGPU(e.dataId),{shape:e.shape,texData:n,isUniform:!1}}));this.uploadToGPU(s.dataId);var f,d={shape:s.shape,texData:u,isUniform:!1},p=function(t,e,n){var r="";e.concat(n).forEach((function(t){var e=null!=t.texData&&null!=t.texData.slice&&t.texData.slice.flatOffset>0,n=t.isUniform?"uniform":t.texData.texShape;r+=t.shape+"_"+n+"_"+e}));var o=t.userCode,a=t.constructor.name;return a+="_"+r+"_"+o}(t,h,d),v=this.getAndSaveBinary(p,(function(){return function(t,e,n,r){var o=e.userCode,a=n.map((function(t,n){var r={logicalShape:t.shape,texShape:t.isUniform?null:t.texData.texShape,isUniform:t.isUniform,isPacked:!t.isUniform&&t.texData.isPacked,flatOffset:null};return null!=t.texData&&null!=t.texData.slice&&t.texData.slice.flatOffset>0&&(r.flatOffset=t.texData.slice.flatOffset),{name:e.variableNames[n],shapeInfo:r}})),s=a.map((function(t){return t.shapeInfo})),u={logicalShape:r.shape,texShape:r.texData.texShape,isUniform:!1,isPacked:r.texData.isPacked,flatOffset:null},c=Za(a,u,o,e.packedInputs),l=t.createProgram(c),h=null,f=t.getUniformLocation(l,"NAN",!1);1===i().getNumber("WEBGL_VERSION")&&(h=t.getUniformLocation(l,"INFINITY",!1));for(var d={},p=0;p0)return 32}return 16}))),this.floatPrecisionValue},o.prototype.epsilon=function(){return 32===this.floatPrecision()?1e-7:1e-4},o.prototype.uploadToGPU=function(t){var e,n=this.texData.get(t),r=n.shape,o=n.dtype,a=n.values,i=n.texture,s=n.usage,u=n.isPacked;if(null==i){var c,l=null!=this.activeTimers;l&&(c=et());var h=n.texShape;if(null==h&&(h=Ne(r,u),n.texShape=h),null!=a){var f=De(r),d=void 0,p=h[1],v=h[0],g=a instanceof Uint8Array;u?(p=(e=$t(h[0],h[1]))[0],v=e[1],d=new ts(f,[v,p],g)):d=new Zi(f,[v,p],g);var m=this.makeTensorInfo([v,p],o);this.texData.get(m.dataId).usage=g?zt.PIXELS:zt.UPLOAD,this.gpgpu.uploadDenseMatrixToTexture(this.getTexture(m.dataId),p,v,a);var y=this.runWebGLProgram(d,[m],o,null,!0),x=this.texData.get(y.dataId);n.texture=x.texture,n.texShape=x.texShape,n.isPacked=x.isPacked,n.usage=x.usage,this.disposeData(m.dataId),this.texData.delete(y.dataId),n.values=null,l&&(this.uploadWaitMs+=et()-c)}else{var b=this.acquireTexture(h,s,o,u);n.texture=b}}},o.prototype.convertAndCacheOnCPU=function(t,e){var n=this.texData.get(t),r=n.dtype;return this.releaseGPUData(t),null!=e&&(n.values=function(t,e){if("float32"===e||"complex64"===e)return t;if("int32"===e||"bool"===e){for(var n="int32"===e?new Int32Array(t.length):new Uint8Array(t.length),r=0;r1024*this.numMBBeforeWarning*1024){var o=(this.numBytesInGPU/1024/1024).toFixed(2);this.warnedAboutMemory=!0,console.warn("High memory usage in GPU: "+o+" MB, most likely due to a memory leak")}return this.textureManager.acquireTexture(t,e,r)},o.prototype.computeBytes=function(t,e){return t[0]*t[1]*z(e)},o}(la);Wt()&&Lt.registerBackend("webgl",(function(){return new Uu}),2);"undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self&&self;function Vu(t,e){return t(e={exports:{}},e.exports),e.exports}var zu=Vu((function(t){!function(t,e,n){function r(t){var e,n=this,r=(e=4022871197,function(t){t=t.toString();for(var n=0;n>>0,e=(r*=e)>>>0,e+=4294967296*(r-=e)}return 2.3283064365386963e-10*(e>>>0)});n.next=function(){var t=2091639*n.s0+2.3283064365386963e-10*n.c;return n.s0=n.s1,n.s1=n.s2,n.s2=t-(n.c=0|t)},n.c=1,n.s0=r(" "),n.s1=r(" "),n.s2=r(" "),n.s0-=r(t),n.s0<0&&(n.s0+=1),n.s1-=r(t),n.s1<0&&(n.s1+=1),n.s2-=r(t),n.s2<0&&(n.s2+=1),r=null}function o(t,e){return e.c=t.c,e.s0=t.s0,e.s1=t.s1,e.s2=t.s2,e}function a(t,e){var n=new r(t),a=e&&e.state,i=n.next;return i.int32=function(){return 4294967296*n.next()|0},i.double=function(){return i()+11102230246251565e-32*(2097152*i()|0)},i.quick=i,a&&("object"==typeof a&&o(a,n),i.state=function(){return o(n,{})}),i}e&&e.exports?e.exports=a:n&&n.amd?n((function(){return a})):this.alea=a}(0,t,!1)})),Gu=Vu((function(t){!function(t,e,n){function r(t){var e=this,n="";e.x=0,e.y=0,e.z=0,e.w=0,e.next=function(){var t=e.x^e.x<<11;return e.x=e.y,e.y=e.z,e.z=e.w,e.w^=e.w>>>19^t^t>>>8},t===(0|t)?e.x=t:n+=t;for(var r=0;r>>0)/4294967296};return i.double=function(){do{var t=((n.next()>>>11)+(n.next()>>>0)/4294967296)/(1<<21)}while(0===t);return t},i.int32=n.next,i.quick=i,a&&("object"==typeof a&&o(a,n),i.state=function(){return o(n,{})}),i}e&&e.exports?e.exports=a:n&&n.amd?n((function(){return a})):this.xor128=a}(0,t,!1)})),Hu=Vu((function(t){!function(t,e,n){function r(t){var e=this,n="";e.next=function(){var t=e.x^e.x>>>2;return e.x=e.y,e.y=e.z,e.z=e.w,e.w=e.v,(e.d=e.d+362437|0)+(e.v=e.v^e.v<<4^t^t<<1)|0},e.x=0,e.y=0,e.z=0,e.w=0,e.v=0,t===(0|t)?e.x=t:n+=t;for(var r=0;r>>4),e.next()}function o(t,e){return e.x=t.x,e.y=t.y,e.z=t.z,e.w=t.w,e.v=t.v,e.d=t.d,e}function a(t,e){var n=new r(t),a=e&&e.state,i=function(){return(n.next()>>>0)/4294967296};return i.double=function(){do{var t=((n.next()>>>11)+(n.next()>>>0)/4294967296)/(1<<21)}while(0===t);return t},i.int32=n.next,i.quick=i,a&&("object"==typeof a&&o(a,n),i.state=function(){return o(n,{})}),i}e&&e.exports?e.exports=a:n&&n.amd?n((function(){return a})):this.xorwow=a}(0,t,!1)})),qu=Vu((function(t){!function(t,e,n){function r(t){var e=this;e.next=function(){var t,n,r=e.x,o=e.i;return t=r[o],n=(t^=t>>>7)^t<<24,n^=(t=r[o+1&7])^t>>>10,n^=(t=r[o+3&7])^t>>>3,n^=(t=r[o+4&7])^t<<7,t=r[o+7&7],n^=(t^=t<<13)^t<<9,r[o]=n,e.i=o+1&7,n},function(t,e){var n,r=[];if(e===(0|e))r[0]=e;else for(e=""+e,n=0;n0;--n)t.next()}(e,t)}function o(t,e){return e.x=t.x.slice(),e.i=t.i,e}function a(t,e){null==t&&(t=+new Date);var n=new r(t),a=e&&e.state,i=function(){return(n.next()>>>0)/4294967296};return i.double=function(){do{var t=((n.next()>>>11)+(n.next()>>>0)/4294967296)/(1<<21)}while(0===t);return t},i.int32=n.next,i.quick=i,a&&(a.x&&o(a,n),i.state=function(){return o(n,{})}),i}e&&e.exports?e.exports=a:n&&n.amd?n((function(){return a})):this.xorshift7=a}(0,t,!1)})),Ku=Vu((function(t){!function(t,e,n){function r(t){var e=this;e.next=function(){var t,n,r=e.w,o=e.X,a=e.i;return e.w=r=r+1640531527|0,n=o[a+34&127],t=o[a=a+1&127],n^=n<<13,t^=t<<17,n^=n>>>15,t^=t>>>12,n=o[a]=n^t,e.i=a,n+(r^r>>>16)|0},function(t,e){var n,r,o,a,i,s=[],u=128;for(e===(0|e)?(r=e,e=null):(e+="\0",r=0,u=Math.max(u,e.length)),o=0,a=-32;a>>15,r^=r<<4,r^=r>>>13,a>=0&&(i=i+1640531527|0,o=0==(n=s[127&a]^=r+i)?o+1:0);for(o>=128&&(s[127&(e&&e.length||0)]=-1),o=127,a=512;a>0;--a)r=s[o+34&127],n=s[o=o+1&127],r^=r<<13,n^=n<<17,r^=r>>>15,n^=n>>>12,s[o]=r^n;t.w=i,t.X=s,t.i=o}(e,t)}function o(t,e){return e.i=t.i,e.w=t.w,e.X=t.X.slice(),e}function a(t,e){null==t&&(t=+new Date);var n=new r(t),a=e&&e.state,i=function(){return(n.next()>>>0)/4294967296};return i.double=function(){do{var t=((n.next()>>>11)+(n.next()>>>0)/4294967296)/(1<<21)}while(0===t);return t},i.int32=n.next,i.quick=i,a&&(a.X&&o(a,n),i.state=function(){return o(n,{})}),i}e&&e.exports?e.exports=a:n&&n.amd?n((function(){return a})):this.xor4096=a}(0,t,!1)})),ju=Vu((function(t){!function(t,e,n){function r(t){var e=this,n="";e.next=function(){var t=e.b,n=e.c,r=e.d,o=e.a;return t=t<<25^t>>>7^n,n=n-r|0,r=r<<24^r>>>8^o,o=o-t|0,e.b=t=t<<20^t>>>12^n,e.c=n=n-r|0,e.d=r<<16^n>>>16^o,e.a=o-t|0},e.a=0,e.b=0,e.c=-1640531527,e.d=1367130551,t===Math.floor(t)?(e.a=t/4294967296|0,e.b=0|t):n+=t;for(var r=0;r>>0)/4294967296};return i.double=function(){do{var t=((n.next()>>>11)+(n.next()>>>0)/4294967296)/(1<<21)}while(0===t);return t},i.int32=n.next,i.quick=i,a&&("object"==typeof a&&o(a,n),i.state=function(){return o(n,{})}),i}e&&e.exports?e.exports=a:n&&n.amd?n((function(){return a})):this.tychei=a}(0,t,!1)})),Xu=Vu((function(t){!function(e,n){var r,o=this,a=256,i=6,s="random",u=n.pow(a,i),c=n.pow(2,52),l=2*c,h=a-1;function f(t,h,f){var m=[],y=v(function t(e,n){var r,o=[],a=typeof e;if(n&&"object"==a)for(r in e)try{o.push(t(e[r],n-1))}catch(t){}return o.length?o:"string"==a?e:e+"\0"}((h=1==h?{entropy:!0}:h||{}).entropy?[t,g(e)]:null==t?function(){try{var t;return r&&(t=r.randomBytes)?t=t(a):(t=new Uint8Array(a),(o.crypto||o.msCrypto).getRandomValues(t)),g(t)}catch(t){var n=o.navigator,i=n&&n.plugins;return[+new Date,o,i,o.screen,g(e)]}}():t,3),m),x=new d(m),b=function(){for(var t=x.g(i),e=u,n=0;t=l;)t/=2,e/=2,n>>>=1;return(t+n)/e};return b.int32=function(){return 0|x.g(4)},b.quick=function(){return x.g(4)/4294967296},b.double=b,v(g(x.S),e),(h.pass||f||function(t,e,r,o){return o&&(o.S&&p(o,x),t.state=function(){return p(x,{})}),r?(n[s]=t,e):t})(b,y,"global"in h?h.global:this==n,h.state)}function d(t){var e,n=t.length,r=this,o=0,i=r.i=r.j=0,s=r.S=[];for(n||(t=[n++]);o=1,(function(){return"Must pass at least one tensor to tf.addN(), but got "+t.length}));var e=t.map((function(t,e){return gn(t,"tensors"+e,"addN")})),n=e[0];e.forEach((function(t){if(t.dtype!==n.dtype)throw new Error("All tensors passed to tf.addN() must have the same dtype")})),e.forEach((function(t){if(!S(t.shape,n.shape))throw new Error("All tensors passed to tf.addN() must have the same shape")}));var r=e;return Lt.runKernelFunc((function(t,n){return t.addN(e)}),r,null,"AddN")}});function Qu(){Xe("tf.batchNormalization() is going away. Use tf.batchNorm() instead, and note the positional argument change of scale, offset, and varianceEpsilon")}function Ju(t){return 0===t.rank||1===t.rank?t.as4D(1,1,1,t.size):2===t.rank?t.as4D(1,1,t.shape[0],t.shape[1]):3===t.rank?t.as4D(1,t.shape[0],t.shape[1],t.shape[2]):t}function Zu(t,e,n,r,o,a){null==a&&(a=.001);var i,s,u=gn(t,"x","batchNorm"),c=gn(e,"mean","batchNorm"),l=gn(n,"variance","batchNorm");null!=o&&(i=gn(o,"scale","batchNorm")),null!=r&&(s=gn(r,"offset","batchNorm")),C(c.rank===l.rank,(function(){return"Batch normalization gradient requires mean and variance to have equal ranks."})),C(null==s||c.rank===s.rank,(function(){return"Batch normalization gradient requires mean and offset to have equal ranks."})),C(null==i||c.rank===i.rank,(function(){return"Batch normalization gradient requires mean and scale to have equal ranks."}));var h={x:u,scale:i,offset:s,mean:c,variance:l},f={varianceEpsilon:a};return Lt.runKernelFunc((function(t,e){var n=Ju(u),r=t.batchNormalization(n,tc(c),tc(l),a,tc(i),tc(s));return e([u,c,l,i]),r}),h,null,"FusedBatchNorm",f).reshape(u.shape)}function tc(t){return null==t?null:0===t.rank?t.as1D():1===t.rank?t:2===t.rank?t.as4D(1,1,t.shape[0],t.shape[1]):3===t.rank?t.as4D(1,t.shape[0],t.shape[1],t.shape[2]):t}var ec=An({batchNormalization_:function(t,e,n,r,o,a){return void 0===r&&(r=.001),Qu(),Zu(t,e,n,a,o,r)}}),nc=An({batchNorm_:Zu});function rc(t,e,n,r,o,a){var i,s,u=gn(t,"x","batchNorm"),c=gn(e,"mean","batchNorm"),l=gn(n,"variance","batchNorm");return null!=o&&(i=gn(o,"scale","batchNorm")),null!=r&&(s=gn(r,"offset","batchNorm")),C(2===u.rank,(function(){return"Error in batchNorm3D: x must be rank 3 but got rank "+u.rank+"."})),C(2===c.rank||1===c.rank,(function(){return"Error in batchNorm2D: mean must be rank 2 or rank 1 but got rank "+c.rank+"."})),C(2===l.rank||1===l.rank,(function(){return"Error in batchNorm2D: variance must be rank 2 or rank 1 but got rank "+l.rank+"."})),null!=i&&C(2===i.rank||1===i.rank,(function(){return"Error in batchNorm2D: scale must be rank 2 or rank 1 but got rank "+i.rank+"."})),null!=s&&C(2===s.rank||1===s.rank,(function(){return"Error in batchNorm2D: offset must be rank 2 or rank 1 but got rank "+s.rank+"."})),nc(u,c,l,s,i,a)}var oc=An({batchNormalization2d_:function(t,e,n,r,o,a){return void 0===r&&(r=.001),Qu(),rc(t,e,n,a,o,r)}}),ac=An({batchNorm2d_:rc});function ic(t,e,n,r,o,a){var i,s,u=gn(t,"x","batchNorm"),c=gn(e,"mean","batchNorm"),l=gn(n,"variance","batchNorm");return null!=o&&(i=gn(o,"scale","batchNorm")),null!=r&&(s=gn(r,"offset","batchNorm")),C(3===u.rank,(function(){return"Error in batchNorm3D: x must be rank 3 but got rank "+u.rank+"."})),C(3===c.rank||1===c.rank,(function(){return"Error in batchNorm3D: mean must be rank 3 or rank 1 but got rank "+c.rank+"."})),C(3===l.rank||1===l.rank,(function(){return"Error in batchNorm3D: variance must be rank 3 or rank 1 but got rank "+l.rank+"."})),null!=i&&C(3===i.rank||1===i.rank,(function(){return"Error in batchNorm3D: scale must be rank 3 or rank 1 but got rank "+i.rank+"."})),null!=s&&C(3===s.rank||1===s.rank,(function(){return"Error in batchNorm3D: offset must be rank 3 or rank 1 but got rank "+s.rank+"."})),nc(u,c,l,s,i,a)}var sc=An({batchNormalization3d_:function(t,e,n,r,o,a){return void 0===r&&(r=.001),Qu(),ic(t,e,n,a,o,r)}}),uc=An({batchNorm3d_:ic});function cc(t,e,n,r,o,a){var i,s,u=gn(t,"x","batchNorm"),c=gn(e,"mean","batchNorm"),l=gn(n,"variance","batchNorm");return null!=o&&(i=gn(o,"scale","batchNorm")),null!=r&&(s=gn(r,"offset","batchNorm")),C(4===u.rank,(function(){return"Error in batchNorm4D: x must be rank 4 but got rank "+u.rank+"."})),C(4===c.rank||1===c.rank,(function(){return"Error in batchNorm4D: mean must be rank 4 or rank 1 but got rank "+c.rank+"."})),C(4===l.rank||1===l.rank,(function(){return"Error in batchNorm4D: variance must be rank 4 or rank 1 but got rank "+l.rank+"."})),null!=i&&C(4===i.rank||1===i.rank,(function(){return"Error in batchNorm4D: scale must be rank 4 or rank 1 but got rank "+i.rank+"."})),null!=s&&C(4===s.rank||1===s.rank,(function(){return"Error in batchNorm4D: offset must be rank 4 or rank 1 but got rank "+s.rank+"."})),nc(u,c,l,s,i,a)}var lc=An({batchNormalization4d_:function(t,e,n,r,o,a){return void 0===r&&(r=.001),Qu(),cc(t,e,n,a,o,r)}}),hc=An({batchNorm4d_:cc});var fc=An({broadcastTo_:function(t,e){var n=gn(t,"broadcastTo","x"),r=n.shape;if(e.some((function(t){return!(t>0)||t%1!=0})))throw new Error("broadcastTo(): Invalid broadcast shape ["+e+"].");if(e.lengthn.rank){for(var o=n.shape.slice();o.length=0;s--)if(a[s]===e[s])i[s]=1;else if(1!==n.shape[s])throw new Error("broadcastTo(): ["+r+"] cannot be broadcast to ["+e+"].");var u=i.map((function(t,e){return t>1?e:-1})).filter((function(t){return t>=0}));if(0===u.length)return n.clone();var c={x:n},l={shape:e,inputShape:a};return Lt.runKernelFunc((function(t){return t.tile(n,i)}),c,(function(t){return{x:function(){return t.sum(u,!0)}}}),Sr,l)}});var dc=An({clone_:function(t){var e=gn(t,"x","clone",null);return Lt.runKernelFunc((function(){return Lt.makeTensorFromDataId(e.dataId,e.shape,e.dtype)}),{x:e},null,Tr)}});var pc=An({logicalAnd_:function(t,e){var n=gn(t,"a","logicalAnd","bool"),r=gn(e,"b","logicalAnd","bool");return Pr(n.shape,r.shape),Lt.runKernelFunc((function(t){return t.logicalAnd(n,r)}),{a:n,b:r},null,"LogicalAnd")}}),vc=An({logicalNot_:function(t){var e=gn(t,"x","logicalNot","bool");return Lt.runKernelFunc((function(t){return t.logicalNot(e)}),{$x:e})}}),gc=An({logicalOr_:function(t,e){var n=gn(t,"a","logicalOr","bool"),r=gn(e,"b","logicalOr","bool");return Pr(n.shape,r.shape),Lt.runKernelFunc((function(t){return t.logicalOr(n,r)}),{$a:n,$b:r})}}),mc=An({logicalXor_:function(t,e){var n=gn(t,"a","logicalXor","bool"),r=gn(e,"b","logicalXor","bool");return Pr(n.shape,r.shape),gc(t,e).logicalAnd(pc(t,e).logicalNot())}}),yc=An({where_:function(t,e,n){var r=gn(e,"a","where"),o=gn(n,"b","where"),a=gn(t,"condition","where","bool");return E(r.shape,o.shape,"Error in where: "),1===a.rank?C(a.shape[0]===r.shape[0],(function(){return"The first dimension of `a` must match the size of `condition`."})):E(a.shape,o.shape,"Error in where: "),Lt.runKernelFunc((function(t,e){var n=t.select(a,r,o);return e([a]),n}),{$condition:a,$a:r,$b:o},(function(t,e){var n=e[0];return{$condition:function(){return Xn(n).toFloat()},$a:function(){return t.mul(n.cast(t.dtype))},$b:function(){return t.mul(n.logicalNot().cast(t.dtype))}}}))}}),xc=function(t){return n(this,void 0,void 0,(function(){var e,n,o;return r(this,(function(r){switch(r.label){case 0:return[4,(e=gn(t,"condition","whereAsync","bool")).data()];case 1:return n=r.sent(),o=Ga(e.shape,n),t!==e&&e.dispose(),[2,o]}}))}))};var bc=An({divNoNan_:function(t,e){var n,r=gn(t,"a","div"),o=gn(e,"b","div");r=(n=Nt(r,o))[0],o=n[1];var a=Bo(r,o),i=Xn(a),s=o.equal(i);return yc(s,i,a)}});var wc=An({tile_:function(t,e){var n=gn(t,"x","tile",null);C(n.rank===e.length,(function(){return"Error in transpose: rank of input "+n.rank+" must match length of reps "+e+"."}));var r=[n],o={x:n},a={reps:e};return Lt.runKernelFunc((function(t,r){var o=t.tile(n,e);return r([n]),o}),o,null,Dr,a,r)}});var Cc=An({eye_:function(t,e,n,r){void 0===r&&(r="float32"),null==e&&(e=t);for(var o=er([t,e],r),a=t<=e?t:e,i=0;i2)throw new Error("Rank of probabilities must be 1 or 2, but is "+i);n=n||Math.random();var s=1===i?o.as2D(1,-1):o,u=Lt.runKernelFunc((function(t){return t.multinomial(s,r,e,n)}),{logits2D:s});return 1===i?u.as1D():u}});var Rc=An({oneHot_:function(t,e,n,r){if(void 0===n&&(n=1),void 0===r&&(r=0),e<2)throw new Error("Error in oneHot: depth must be >=2, but it is "+e);var o=gn(t,"indices","oneHot","int32"),a=o.shape.concat([e]),i={indices:o=o.flatten()},s={depth:e,onValue:n,offValue:r};return Lt.runKernelFunc((function(t,a){return a([o]),t.oneHot(o,e,n,r)}),i,null,Ar,s).reshape(a)}});var Ic=An({pad_:function(t,e,n){void 0===n&&(n=0);var r=gn(t,"x","pad");if(0===r.rank)throw new Error("pad(scalar) is not defined. Pass non-scalar to pad");var o={paddings:e,constantValue:n},a={x:r};return Lt.runKernelFunc((function(t,o){return o([r]),t.pad(r,e,n)}),a,null,Nr,o)}});var kc=An({pad1d_:function(t,e,n){return void 0===n&&(n=0),C(2===e.length,(function(){return"Invalid number of paddings. Must be length of 2."})),Ic(t,[e],n)}});var Sc=An({pad2d_:function(t,e,n){return void 0===n&&(n=0),C(2===e.length&&2===e[0].length&&2===e[1].length,(function(){return"Invalid number of paddings. Must be length of 2 each."})),Ic(t,e,n)}});var Ac=An({pad3d_:function(t,e,n){return void 0===n&&(n=0),C(3===e.length&&2===e[0].length&&2===e[1].length&&2===e[2].length,(function(){return"Invalid number of paddings. Must be length of 2 each."})),Ic(t,e,n)}});var Tc=An({pad4d_:function(t,e,n){return void 0===n&&(n=0),C(4===e.length&&2===e[0].length&&2===e[1].length&&2===e[2].length&&2===e[3].length,(function(){return"Invalid number of paddings. Must be length of 2 each."})),Ic(t,e,n)}});var Dc=An({rand_:function(t,e,n){var r=k(t),o=null;if(null==n||"float32"===n)o=new Float32Array(r);else if("int32"===n)o=new Int32Array(r);else{if("bool"!==n)throw new Error("Unknown data type "+n);o=new Uint8Array(r)}for(var a=0;an)}var Bc=Object.freeze({TEST_EPSILON_FLOAT16:Fc,expectArraysClose:function(t,e,n){return null==n&&(n=_c()),Oc(t,e,(function(t,e){return Mc(t,e,n)}))},testEpsilon:_c,expectPromiseToFail:function(t,e){t().then((function(){return e.fail()}),(function(){return e()}))},expectArraysEqual:function(t,e){var n="string"==typeof e||"number"==typeof e||"boolean"==typeof e?[e]:e;return H(t)||H(t[0])||H(e)||H(e[0])?Oc(t,n,(function(t,e){return t==e})):Oc(t,e,(function(t,e){return Mc(t,e,0)}))},expectNumbersClose:function(t,e,n){if(null==n&&(n=_c()),!Mc(t,e,n))throw new Error("Numbers differ: actual === "+t+", expected === "+e)},expectValuesInRange:function(t,e,n){for(var r=0;rn)throw new Error("Value out of range:"+t[r]+" low: "+e+", high: "+n)},expectArrayBuffersEqual:function(t,e){expect(new Float32Array(t)).toEqual(new Float32Array(e))}}),Pc=function(){function t(t,e,n,r,o){this.mean=t,this.stdDev=e,this.dtype=n,this.nextVal=NaN,this.truncated=r,this.truncated&&(this.upper=this.mean+2*this.stdDev,this.lower=this.mean-2*this.stdDev);var a=o||Math.random();this.random=Yu(a.toString())}return t.prototype.nextValue=function(){if(!isNaN(this.nextVal)){var t=this.nextVal;return this.nextVal=NaN,t}for(var e,n,r=!1;!r;){var o=void 0,a=void 0,i=void 0;do{i=(o=2*this.random()-1)*o+(a=2*this.random()-1)*a}while(i>=1||0===i);var s=Math.sqrt(-2*Math.log(i)/i);e=this.mean+this.stdDev*o*s,n=this.mean+this.stdDev*a*s,this.truncated&&!this.isValidTruncated(e)||(r=!0)}return this.truncated&&!this.isValidTruncated(n)||(this.nextVal=this.convertValue(n)),this.convertValue(e)},t.prototype.convertValue=function(t){return null==this.dtype||"float32"===this.dtype?t:Math.round(t)},t.prototype.isValidTruncated=function(t){return t<=this.upper&&t>=this.lower},t}(),Lc=function(){function t(t,e,n,r){this.alpha=t,this.beta=1/e,this.dtype=n;var o=r||Math.random();this.randu=Yu(o.toString()),this.randn=new Pc(0,1,n,!1,this.randu()),this.d=t<1?t+2/3:t-1/3,this.c=1/Math.sqrt(9*this.d)}return t.prototype.nextValue=function(){for(var t,e,n,r,o,a;;){do{r=this.randn.nextValue(),a=1+this.c*r}while(a<=0);if(a*=a*a,e=1-.331*(t=r*r)*t,n=.5*t+this.d*(1-a+Math.log(a)),(o=this.randu())0,(function(){return"mask cannot be scalar"})),E(u.slice(i,i+s),a.shape,"mask's shape must match the first K dimensions of tensor's shape,"),c=1,l=i;l=2&&i.rank>=2&&a.rank===i.rank,(function(){return"Error in matMul: inputs must have the same rank of at least 2, got ranks "+a.rank+" and "+i.rank+"."})),C(S(h,f),(function(){return"Error in matMul: outer dimensions ("+h+") and ("+f+") of Tensors with shapes "+a.shape+" and "+i.shape+" must match."})),C(s===u,(function(){return"Error in matMul: inner shapes ("+s+") and ("+u+") of Tensors with shapes "+a.shape+" and "+i.shape+" and transposeA="+n+" and transposeB="+r+" must match."}));var v=a.shape.slice(0,-2).concat([c,l]),g=n?a.as3D(d,s,c):a.as3D(d,c,s),m=r?i.as3D(p,l,u):i.as3D(p,u,l),y={transposeA:n,transposeB:r};return Lt.runKernelFunc((function(t,e){var o=t.batchMatMul(g,m,n,r);return e([g,m]),o}),{a:g,b:m},(function(t,e){var o=e,a=o[0],i=o[1];return n||r?!n&&r?{a:function(){return t.matMul(i,!1,!1)},b:function(){return t.matMul(a,!0,!1)}}:n&&!r?{a:function(){return i.matMul(t,!1,!0)},b:function(){return a.matMul(t,!1,!1)}}:{a:function(){return i.matMul(t,!0,!0)},b:function(){return t.matMul(a,!0,!0)}}:{a:function(){return t.matMul(i,!1,!0)},b:function(){return a.matMul(t,!0,!1)}}}),"BatchMatMul",y).reshape(v)}}),Rl=An({dot_:function(t,e){var n=gn(t,"t1","dot"),r=gn(e,"t2","dot");C(!(1!==n.rank&&2!==n.rank||1!==r.rank&&2!==r.rank),(function(){return"Error in dot: inputs must all be rank 1 or 2, but got ranks "+n.rank+" and "+r.rank+"."}));var o=1===n.rank?n.size:n.shape[1],a=1===r.rank?r.size:r.shape[0];return C(o===a,(function(){return"Error in dot: inner dimensions of inputs must match, but got "+o+" and "+a+"."})),1===n.rank&&1===r.rank?n.as2D(1,-1).matMul(r.as2D(-1,1)).asScalar():1===n.rank&&2===r.rank?n.as2D(1,-1).matMul(r.as2D(r.shape[0],r.shape[1])).as1D():2===n.rank&&1===r.rank?n.matMul(r.as2D(-1,1)).as1D():n.matMul(r.as2D(r.shape[0],r.shape[1]))}}),Il=An({outerProduct_:function(t,e){var n=gn(t,"v1","outerProduct"),r=gn(e,"v2","outerProduct");return C(1===n.rank&&1===r.rank,(function(){return"Error in outerProduct: inputs must be rank 1, but got ranks "+n.rank+" and "+r.rank+"."})),n.as2D(-1,1).matMul(r.as2D(1,-1))}});var kl=An({reverse_:function(t,e){var n=gn(t,"x","reverse");if(0===n.rank)return n.clone();var r=O(e,n.shape);return Lt.runKernelFunc((function(t){return t.reverse(n,r)}),{$x:n},(function(t){return{$x:function(){return t.reverse(r)}}})).reshapeAs(n)}}),Sl=An({reverse1d_:function(t){var e=gn(t,"x","reverse");return C(1===e.rank,(function(){return"Error in reverse1D: x must be rank 1 but got rank "+e.rank+"."})),kl(e,0)}}),Al=An({reverse2d_:function(t,e){var n=gn(t,"x","reverse");return C(2===n.rank,(function(){return"Error in reverse2D: x must be rank 2 but got rank "+n.rank+"."})),kl(n,e)}}),Tl=An({reverse3d_:function(t,e){var n=gn(t,"x","reverse");return C(3===n.rank,(function(){return"Error in reverse3D: x must be rank 3 but got rank "+n.rank+"."})),kl(n,e)}}),Dl=An({reverse4d_:function(t,e){var n=gn(t,"x","reverse");return C(4===n.rank,(function(){return"Error in reverse4D: x must be rank 4 but got rank "+n.rank+"."})),kl(n,e)}});function Nl(t,e,n,r,o,a){var i=gn(t,"x","maxPool"),s=i,u=!1;3===i.rank&&(u=!0,s=i.as4D(1,i.shape[0],i.shape[1],i.shape[2])),null==r&&(r=[1,1]),C(4===s.rank,(function(){return"Error in maxPool: input must be rank 4 but got rank "+s.rank+"."})),C(Ca(n,r),(function(){return"Error in maxPool: Either strides or dilations must be 1. Got strides "+n+" and dilations '"+r+"'"})),null!=a&&C(A(o),(function(){return"Error in maxPool: pad must be an integer when using, dimRoundingMode "+a+" but got pad "+o+"."}));var c=fa(s.shape,e,n,r,o,a);if(1===c.filterWidth&&1===c.filterHeight&&S(c.inShape,c.outShape))return i.clone();var l=[s],h=Lt.runKernelFunc((function(t,e){var n=t.maxPool(s,c);return e([s,n]),n}),{x:s},(function(t,a){var i=a[0],s=a[1];return{x:function(){return function(t,e,n,r,o,a,i,s){var u=gn(t,"dy","maxPoolBackprop"),c=gn(e,"input","maxPoolBackprop"),l=gn(n,"output","maxPoolBackprop");C(c.rank===u.rank,(function(){return"Rank of input ("+c.rank+") does not match rank of dy ("+u.rank+")"})),null==a&&(a=[1,1]);C(Ca(o,a),(function(){return"Error in maxPoolBackProp: Either strides or dilations must be 1. Got strides "+o+" and dilations '"+a+"'"})),C(4===u.rank,(function(){return"Error in maxPoolBackprop: dy must be rank 4 but got rank "+u.rank+"."})),C(4===c.rank,(function(){return"Error in maxPoolBackprop: input must be rank 4 but got rank "+c.rank+"."})),null!=s&&C(A(i),(function(){return"Error in maxPoolBackprop: pad must be an integer when using, dimRoundingMode "+s+" but got pad "+i+"."}));var h=fa(c.shape,r,o,a,i,s);return Lt.runKernelFunc((function(t){return t.maxPoolBackprop(u,c,l,h)}),{$dy:u,$input:c})}(t,i,s,e,n,r,o)}}}),"MaxPool",c,l);return u?h.as3D(h.shape[1],h.shape[2],h.shape[3]):h}function Fl(t,e,n,r,o,a){var i=gn(t,"x","avgPool","float32");null==r&&(r=[1,1]),C(Ca(n,r),(function(){return"Error in avgPool: Either strides or dilations must be 1. Got strides "+n+" and dilations '"+r+"'"}));var s=i,u=!1;3===i.rank&&(u=!0,s=i.as4D(1,i.shape[0],i.shape[1],i.shape[2])),C(4===s.rank,(function(){return"Error in avgPool: x must be rank 4 but got rank "+s.rank+"."})),null!=a&&C(A(o),(function(){return"Error in avgPool: pad must be an integer when using, dimRoundingMode "+a+" but got pad "+o+"."}));var c=fa(s.shape,e,n,r,o,a);if(1===c.filterWidth&&1===c.filterHeight&&S(c.inShape,c.outShape))return i.clone();var l=Lt.runKernelFunc((function(t){return t.avgPool(s,c)}),{x:s},(function(t){return{x:function(){return function(t,e,n,r,o,a){var i=gn(t,"dy","avgPoolBackprop"),s=gn(e,"input","avgPoolBackprop");C(s.rank===i.rank,(function(){return"Rank of input ("+s.rank+") does not match rank of dy ("+i.rank+")"})),null==o&&(o=[1,1]);C(Ca(r,o),(function(){return"Error in avgPoolBackprop: Either strides or dilations must be 1. Got strides "+r+" and dilations '"+o+"'"}));var u=s,c=i,l=!1;3===s.rank&&(l=!0,u=s.as4D(1,s.shape[0],s.shape[1],s.shape[2]),c=i.as4D(1,i.shape[0],i.shape[1],i.shape[2]));C(4===c.rank,(function(){return"Error in avgPoolBackprop: dy must be rank 4 but got rank "+c.rank+"."})),C(4===u.rank,(function(){return"Error in avgPoolBackprop: input must be rank 4 but got rank "+u.rank+"."}));var h=fa(u.shape,n,r,o,a),f=Lt.runKernelFunc((function(t){return t.avgPoolBackprop(c,u,h)}),{dy4D:c,input4D:u});if(l)return f.as3D(f.shape[1],f.shape[2],f.shape[3]);return f}(t,s,e,n,r,o)}}}),"AvgPool",c);return l=l.cast(i.dtype),u?l.as3D(l.shape[1],l.shape[2],l.shape[3]):l}var _l=An({maxPool_:function(t,e,n,r,o){return Nl(t,e,n,1,r,o)}}),Ol=An({avgPool_:function(t,e,n,r,o){return Fl(t,e,n,1,r,o)}}),Ml=An({pool_:function(t,e,n,r,o,a){null==o&&(o=[1,1]),null==a&&(a=1),0===r&&(r="valid");var i=gn(t,"x","maxPool"),s=i,u=!1;3===i.rank&&(u=!0,s=i.as4D(1,i.shape[0],i.shape[1],i.shape[2])),C(Ca(a,o),(function(){return"Error in pool: Either strides or dilations must be 1. Got strides "+a+" and dilations '"+o+"'"}));var c,l=fa(s.shape,e,a,o,r),h=[l.dilationHeight,l.dilationWidth];c="same"===r?function(t,e){var n=t.map((function(t,n){return t+(t-1)*(e[n]-1)})).map((function(t){return t-1})),r=n.map((function(t){return Math.floor(t/2)})),o=n.map((function(t,e){return t-r[e]}));return n.map((function(t,e){return[r[e],o[e]]}))}([l.filterHeight,l.filterWidth],h):[[0,0],[0,0]];var f=1===h[0]&&1===h[1],d=function(t,e,n){var r=n.map((function(t){return t[0]})),o=n.map((function(t){return t[1]})),a=t.concat(r,o),i=e.map((function(t,e){return(t-a[e]%t)%t})),s=o.map((function(t,e){return t+i[e]})),u=e.map((function(t,e){return[r[e],s[e]]})),c=e.map((function(t,e){return[0,i[e]]}));return[u,c]}([l.inHeight,l.inWidth],h,c),p=d[0],v=d[1],g=f?r:"valid",m=f?s:cr(s,h,p),y=("avg"===n?function(){return Fl(m,e,a,1,g)}:function(){return Nl(m,e,a,1,g)})(),x=f?y:rr(y,h,v);return u?x.as3D(x.shape[1],x.shape[2],x.shape[3]):x}}),Bl=An({maxPool3d_:function(t,e,n,r,o,a,i){void 0===a&&(a="NDHWC");var s=gn(t,"x","maxPool3d"),u=s,c=!1;4===s.rank&&(c=!0,u=s.as5D(1,s.shape[0],s.shape[1],s.shape[2],s.shape[3])),null==i&&(i=[1,1,1]),C(5===u.rank,(function(){return"Error in maxPool3d: x must be rank 5 but got rank "+u.rank+"."})),C("NDHWC"===a,(function(){return"Error in maxPool3d: Only NDHWC is currently supported, but got dataFormat of "+a})),C(Ca(n,i),(function(){return"Error in maxPool3d: Either strides or dilations must be 1. Got strides "+n+" and dilations '"+i+"'"})),null!=o&&C(A(r),(function(){return"Error in maxPool3d: pad must be an integer when using, dimRoundingMode "+o+" but got pad "+r+"."}));var l=da(u.shape,e,n,i,r,o,a),h=Lt.runKernelFunc((function(t,e){var n=t.maxPool3d(u,l);return e([u,n]),n}),{x:u},(function(t,a){var s=a[0],u=a[1];return{x:function(){return function(t,e,n,r,o,a,i,s){var u=gn(t,"dy","maxPool3dBackprop"),c=gn(e,"input","maxPool3dBackprop"),l=gn(n,"output","maxPool3dBackprop"),h=u,f=c,d=l,p=!1;4===c.rank&&(p=!0,h=u.as5D(1,u.shape[0],u.shape[1],u.shape[2],u.shape[3]),f=c.as5D(1,c.shape[0],c.shape[1],c.shape[2],c.shape[3]),d=l.as5D(1,l.shape[0],l.shape[1],l.shape[2],l.shape[3]));C(5===h.rank,(function(){return"Error in maxPool3dBackprop: dy must be rank 5 but got rank "+h.rank+"."})),C(5===f.rank,(function(){return"Error in maxPool3dBackprop: input must be rank 5 but got rank "+f.rank+"."})),C(5===d.rank,(function(){return"Error in maxPool3dBackprop: output must be rank 5 but got rank "+d.rank+"."})),null==a&&(a=[1,1,1]);C(Ca(o,a),(function(){return"Error in maxPool3dBackprop: Either strides or dilations must be 1. Got strides "+o+" and dilations '"+a+"'"})),null!=s&&C(A(i),(function(){return"Error in maxPool3dBackprop: pad must be an integer when using, dimRoundingMode "+s+" but got pad "+i+"."}));var v=da(f.shape,r,o,a,i,s),g=Lt.runKernelFunc((function(t){return t.maxPool3dBackprop(h,f,d,v)}),{dy5D:h,input5D:f});if(p)return g.as4D(g.shape[1],g.shape[2],g.shape[3],g.shape[4]);return g}(t,s,u,e,n,i,r,o)}}}));return c?h.as4D(h.shape[1],h.shape[2],h.shape[3],h.shape[4]):h}}),Pl=An({avgPool3d_:function(t,e,n,r,o,a,i){void 0===a&&(a="NDHWC");var s=gn(t,"x","avgPool3d","float32"),u=s,c=!1;4===s.rank&&(c=!0,u=s.as5D(1,s.shape[0],s.shape[1],s.shape[2],s.shape[3])),null==i&&(i=[1,1,1]),C(5===u.rank,(function(){return"Error in avgPool3d: x must be rank 5 but got rank "+u.rank+"."})),C("NDHWC"===a,(function(){return"Error in avgPool3d: Only NDHWC is currently supported, but got dataFormat of "+a})),C(Ca(n,i),(function(){return"Error in avgPool3d: Either strides or dilations must be 1. Got strides "+n+" and dilations '"+i+"'"})),null!=o&&C(A(r),(function(){return"Error in avgPool3d: pad must be an integer when using, dimRoundingMode "+o+" but got pad "+r+"."}));var l=da(u.shape,e,n,i,r,o,a),h=Lt.runKernelFunc((function(t){return t.avgPool3d(u,l)}),{x:u},(function(t){return{x:function(){return function(t,e,n,r,o,a,i){var s=gn(t,"dy","avgPool3dBackprop"),u=gn(e,"input","avgPool3dBackprop"),c=s,l=u,h=!1;4===u.rank&&(h=!0,c=s.as5D(1,s.shape[0],s.shape[1],s.shape[2],s.shape[3]),l=u.as5D(1,u.shape[0],u.shape[1],u.shape[2],u.shape[3]));C(5===c.rank,(function(){return"Error in avgPool3dBackprop: dy must be rank 5 but got rank "+c.rank+"."})),C(5===l.rank,(function(){return"Error in avgPool3dBackprop: input must be rank 5 but got rank "+l.rank+"."})),null==o&&(o=[1,1,1]);C(Ca(r,o),(function(){return"Error in avgPool3dBackprop: Either strides or dilations must be 1. Got strides "+r+" and dilations '"+o+"'"})),null!=i&&C(A(a),(function(){return"Error in maxPool3dBackprop: pad must be an integer when using, dimRoundingMode "+i+" but got pad "+a+"."}));var f=da(l.shape,n,r,o,a,i),d=Lt.runKernelFunc((function(t){return t.avgPool3dBackprop(c,l,f)}),{dy5D:c,input5D:l});if(h)return d.as4D(d.shape[1],d.shape[2],d.shape[3],d.shape[4]);return d}(t,u,e,n,i,r,o)}}}));return h=h.cast(u.dtype),c?h.as4D(h.shape[1],h.shape[2],h.shape[3],h.shape[4]):h}}),Ll=An({maxPoolWithArgmax_:function(t,e,n,r,o){void 0===o&&(o=!1);var a=gn(t,"x","maxPoolWithArgmax"),i={filterSize:e,strides:n,pad:r,includeBatchInIndex:o},s=Lt.runKernel("MaxPoolWithArgmax",{x:a},i);return{result:s[0],indexes:s[1]}}});var Wl=An({slice_:function(t,e,n){var r,o,a=gn(t,"x","slice");if(0===a.rank)throw new Error("Slicing scalar is not possible");(r="number"==typeof e?[e].concat(new Array(a.rank-1).fill(0)):e.length=0?t:(C(-1===t,(function(){return"Negative size values should be exactly -1 but got "+t+" for the slice() size at index "+e+"."})),a.shape[e]-r[e])})),qo(a,r,o);var i=a.shape,s={begin:r,size:o};return Lt.runKernelFunc((function(t){return t.slice(a,r,o)}),{x:a},(function(t){for(var e=[],n=0;n0&&(e=e.sum(a)),e.reshape(r.shape)}}}),"Prelu")}}),ah=An({relu_:function(t){var e=gn(t,"x","relu");return"bool"===e.dtype?e.toInt():Lt.runKernelFunc((function(t,n){var r=t.relu(e);return n([e]),r}),{x:e},(function(t,e){var n=e[0];return{x:function(){return t.mulStrict(n.step().toFloat())}}}),"Relu")}}),ih=An({relu6_:function(t){var e=gn(t,"x","relu6");return"bool"===e.dtype?e.toInt():Lt.runKernelFunc((function(t,n){var r=t.relu6(e);return n([e]),r}),{x:e},(function(t,e){var n=e[0],r=n.lessEqual(6).mul(n.step());return{x:function(){return t.mulStrict(r.toFloat())}}}),"Relu6")}}),sh=An({selu_:function(t){var e=gn(t,"x","selu");return Lt.runKernelFunc((function(t,n){var r=t.selu(e);return n([e]),r}),{$x:e},(function(t,e){var n=e[0];return{$x:function(){var e=n.greater(On(0)),r=On(su),o=On(uu),a=t.mul(o),i=t.mul(r).mul(n.toFloat().exp());return yc(e,a,i)}}}))}});var uh=An({localResponseNormalization_:function(t,e,n,r,o){void 0===e&&(e=5),void 0===n&&(n=1),void 0===r&&(r=1),void 0===o&&(o=.5);var a=gn(t,"x","localResponseNormalization");C(4===a.rank||3===a.rank,(function(){return"Error in localResponseNormalization: x must be rank 3 or 4 but got\n rank "+a.rank+"."})),C(A(e),(function(){return"Error in localResponseNormalization: depthRadius must be an integer but got depthRadius "+e+"."}));var i=a,s=!1;3===a.rank&&(s=!0,i=a.as4D(1,a.shape[0],a.shape[1],a.shape[2]));var u=Lt.runKernelFunc((function(t,a){var s=t.localResponseNormalization4D(i,e,n,r,o);return a([i,s]),s}),{x4D:i},(function(t,a){var i=a[0],s=a[1];return{x4D:function(){return Lt.runKernelFunc((function(a){return a.LRNGrad(t,i,s,e,n,r,o)}),{})}}}));return s?u.as3D(u.shape[1],u.shape[2],u.shape[3]):u}});var ch=An({norm_:function(t,e,n,r){void 0===e&&(e="euclidean"),void 0===n&&(n=null),void 0===r&&(r=!1);var o=function t(e,n,r){void 0===r&&(r=null);if(0===e.rank)return e.abs();if(1!==e.rank&&null===r)return t(e.reshape([-1]),n,r);if(1===e.rank||"number"==typeof r||Array.isArray(r)&&1===r.length){if(1===n)return e.abs().sum(r);if(n===1/0)return e.abs().max(r);if(n===-1/0)return e.abs().min(r);if("euclidean"===n||2===n)return e.abs().pow(On(2,"int32")).sum(r).sqrt();throw new Error("Error in norm: invalid ord value: "+n)}if(Array.isArray(r)&&2===r.length){if(1===n)return e.abs().sum(r[0]).max(r[1]-1);if(n===1/0)return e.abs().sum(r[1]).max(r[0]);if(n===-1/0)return e.abs().sum(r[1]).min(r[0]);if("fro"===n||"euclidean"===n)return e.square().sum(r).sqrt();throw new Error("Error in norm: invalid ord value: "+n)}throw new Error("Error in norm: invalid axis: "+r)}(t=gn(t,"x","norm"),e,n),a=o.shape;if(r){var i=O(n,t.shape);a=wn(o.shape,i)}return o.reshape(a)}});var lh=An({basicLSTMCell_:function(t,e,n,r,o,a){var i=gn(t,"forgetBias","basicLSTMCell"),s=gn(e,"lstmKernel","basicLSTMCell"),u=gn(n,"lstmBias","basicLSTMCell"),c=gn(r,"data","basicLSTMCell"),l=gn(o,"c","basicLSTMCell"),h=gn(a,"h","basicLSTMCell"),f=c.concat(h,1).matMul(s).add(u),d=f.shape[0],p=f.shape[1]/4,v=[d,p],g=f.slice([0,0],v),m=f.slice([0,p],v),y=f.slice([0,2*p],v),x=f.slice([0,3*p],v),b=g.sigmoid().mulStrict(m.tanh()).addStrict(l.mulStrict(i.add(y).sigmoid())),w=b.tanh().mulStrict(x.sigmoid());return[b,w]}}),hh=An({multiRNNCell_:function(t,e,n,r){for(var o=gn(e,"data","multiRNNCell"),a=mn(n,"c","multiRNNCell"),i=mn(r,"h","multiRNNCell"),s=o,u=[],c=0;co)throw new Error("'k' passed to topk() must be <= the last dimension ("+o+") but got "+e);var a=Lt.runKernelFunc((function(t){return t.topk(r,e,n)}),{$x:r});return{values:a[0],indices:a[1]}}});var vh=An({scatterND_:function(t,e,n){var r=gn(t,"indices","scatterND","int32"),o=gn(e,"updates","scatterND");return zo(o,r,n),Lt.runKernelFunc((function(t){return t.scatterND(r,o,n)}),{indices:r,updates:o},null,"ScatterNd",{shape:n})}});var gh=An({fft_:function(t){C("complex64"===t.dtype,(function(){return"The dtype for tf.spectral.fft() must be complex64 but got "+t.dtype+"."}));var e=t.shape[t.shape.length-1],n=t.size/e,r=t.as2D(n,e);return Lt.runKernelFunc((function(t){return t.fft(r)}),{input:t}).reshape(t.shape)}}),mh=An({ifft_:function(t){C("complex64"===t.dtype,(function(){return"The dtype for tf.spectral.ifft() must be complex64 but got "+t.dtype+"."}));var e=t.shape[t.shape.length-1],n=t.size/e,r=t.as2D(n,e);return Lt.runKernelFunc((function(t){return t.ifft(r)}),{input:t}).reshape(t.shape)}}),yh=An({rfft_:function(t,e){C("float32"===t.dtype,(function(){return"The dtype for rfft() must be real value but got "+t.dtype}));var n,r=t.shape[t.shape.length-1],o=t.size/r;if(null!=e&&er){var s=t.shape.map((function(t){return t}));s[t.shape.length-1]=e-r,n=t.concat(Gn(s),t.shape.length-1),r=e}else n=t;var u=n.zerosLike(),c=Tn(n,u).as2D(o,r),l=gh(c),h=Math.floor(r/2)+1,f=Dn(l),d=Nn(l),p=f.split([h,r-h],f.shape.length-1),v=d.split([h,r-h],d.shape.length-1),g=n.shape.slice();return g[n.shape.length-1]=h,Tn(p[0],v[0]).reshape(g)}}),xh=An({irfft_:function(t){var e=t.shape[t.shape.length-1],n=t.size/e;if(e<=2){var r=t.as2D(n,e),o=mh(r);return Dn(o)}var a=[n,2*(e-1)],i=Dn(t).as2D(n,e),s=Nn(t).as2D(n,e),u=i.slice([0,1],[n,e-2]).reverse(1),c=s.slice([0,1],[n,e-2]).reverse(1).mul(On(-1)),l=i.concat(u,1),h=s.concat(c,1);return r=Tn(l,h).as2D(a[0],a[1]),o=mh(r),Dn(o)}}),bh=Object.freeze({fft:gh,ifft:mh,rfft:yh,irfft:xh});var wh=An({sparseToDense_:function(t,e,n,r){void 0===r&&(r=0);var o=gn(t,"sparseIndices","sparseToDense","int32"),a=gn(e,"sparseValues","sparseToDense"),i=gn(r,"defaultValue","sparseToDense",a.dtype);return function(t,e,n,r){if("int32"!==t.dtype)throw new Error("tf.sparseToDense() expects the indices to be int32 type, but the dtype was "+t.dtype+".");if(t.rank>2)throw new Error("sparseIndices should be a scalar, vector, or matrix, but got shape "+t.shape+".");var o=t.rank>0?t.shape[0]:1,a=t.rank>1?t.shape[1]:1;if(n.length!==a)throw new Error("outputShape has incorrect number of elements:, "+n.length+", should be: "+a+".");var i=e.size;if(0!==e.rank&&(1!==e.rank||i!==o))throw new Error("sparseValues has incorrect shape "+e.shape+", should be [] or ["+o+"]");if(e.dtype!==r.dtype)throw new Error("sparseValues.dtype must match defaultValues.dtype")}(o,a,n,i),Lt.runKernelFunc((function(t){return t.sparseToDense(o,a,n,i)}),{$sparseIndices:o,$sparseValues:a,$defaultValue:i})}});var Ch=An({gatherND_:function(t,e){var n=gn(e,"indices","gatherND","int32"),r=gn(t,"x","gatherND");return Lt.runKernelFunc((function(t){return t.gatherND(r,n)}),{x:r,indices:n},null,"GatherNd")}});var Eh=An({diag_:function(t){var e=gn(t,"x","diag").flatten(),n=t.shape.concat(t.shape);return Lt.runKernelFunc((function(t){return t.diag(e)}),{$x:e}).reshape(n)}});var Rh=An({dropout_:function(t,e,n,r){var o=gn(t,"x","dropout");if(C("float32"===o.dtype,(function(){return"x has to be a floating point tensor since it's going to be scaled, but got a "+o.dtype+" tensor instead."})),C(e>=0&&e<1,(function(){return"rate must be a float in the range [0, 1), but got "+e+"."})),0===e)return t instanceof wt?o.clone():o;var a=function(t,e){if(null==e)return t.shape.slice();if(S(t.shape,e))return e;if(t.shape.length===e.length){for(var n=[],r=0;r1,(function(){return"inTopK() expects the predictions to be of rank 2 or higher, but got "+n.rank})),C(n.rank-1===a.rank,(function(){return"predictions rank should be 1 larger than targets rank, but got predictions rank "+n.rank+" and targets rank "+a.rank})),E(n.shape.slice(0,n.shape.length-1),a.shape,"predictions's shape should be align with the targets' shape, except the last dimension."),i=n.shape[n.shape.length-1],C(o>0&&o<=i,(function(){return"'k' passed to inTopK() must be > 0 && <= the predictions last dimension ("+i+"), but got "+o})),[4,n.data()];case 1:return s=r.sent(),[4,a.data()];case 2:for(u=r.sent(),c=[s.length/i,i],h=c[1],f=B("bool",l=c[0]),d=0;d1?s.div(On(i)):s}if(n===Nh.SUM_BY_NONZERO_WEIGHTS){if(null==o)return a.sum().div(On(r.size));var u=o.mul(zn(r.shape)).notEqual(On(0)).sum().toFloat();return a.sum().div(u)}throw Error("Unknown reduction: "+n)}}),Mh=An({cosineDistance_:function(t,e,n,r,o){void 0===o&&(o=Nh.SUM_BY_NONZERO_WEIGHTS);var a=gn(t,"labels","cosineDistance"),i=gn(e,"predictions","cosineDistance"),s=null;null!=r&&(s=gn(r,"weights","cosineDistance")),E(a.shape,i.shape,"Error in cosineDistance: ");var u=On(1).sub(a.mul(i).sum(n,!0));return Oh(u,s,o)}}),Bh=An({hingeLoss_:function(t,e,n,r){void 0===r&&(r=Nh.SUM_BY_NONZERO_WEIGHTS);var o=gn(t,"labels","hingeLoss"),a=gn(e,"predictions","hingeLoss"),i=null;null!=n&&(i=gn(n,"weights","hingeLoss")),E(o.shape,a.shape,"Error in hingeLoss: ");var s=On(1);o=On(2).mul(o).sub(s);var u=s.sub(o.mul(a)).relu();return Oh(u,i,r)}}),Ph=An({huberLoss_:function(t,e,n,r,o){void 0===r&&(r=1),void 0===o&&(o=Nh.SUM_BY_NONZERO_WEIGHTS);var a=gn(t,"labels","huberLoss"),i=gn(e,"predictions","huberLoss"),s=null;null!=n&&(s=gn(n,"weights","huberLoss")),E(a.shape,i.shape,"Error in huberLoss: ");var u=On(r),c=i.sub(a).abs(),l=Io(c,u),h=c.sub(l),f=On(.5).mul(l.square()).add(u.mul(h));return Oh(f,s,o)}}),Lh=An({logLoss_:function(t,e,n,r,o){void 0===r&&(r=1e-7),void 0===o&&(o=Nh.SUM_BY_NONZERO_WEIGHTS);var a=gn(t,"labels","logLoss"),i=gn(e,"predictions","logLoss"),s=null;null!=n&&(s=gn(n,"weights","logLoss")),E(a.shape,i.shape,"Error in logLoss: ");var u=On(1),c=On(r),l=a.mul(i.add(c).log()).neg().sub(u.sub(a).mul(u.sub(i).add(c).log()));return Oh(l,s,o)}}),Wh=An({meanSquaredError_:function(t,e,n,r){void 0===r&&(r=Nh.SUM_BY_NONZERO_WEIGHTS);var o=gn(t,"labels","meanSquaredError"),a=gn(e,"predictions","meanSquaredError"),i=null;null!=n&&(i=gn(n,"weights","meanSquaredError")),E(o.shape,a.shape,"Error in meanSquaredError: ");var s=o.squaredDifference(a);return Oh(s,i,r)}}),Uh=An({sigmoidCrossEntropy_:function(t,e,n,r,o){void 0===r&&(r=0),void 0===o&&(o=Nh.SUM_BY_NONZERO_WEIGHTS);var a=gn(t,"multiClassLabels","sigmoidCrossEntropy"),i=gn(e,"logits","sigmoidCrossEntropy"),s=null;if(null!=n&&(s=gn(n,"weights","sigmoidCrossEntropy")),E(a.shape,i.shape,"Error in sigmoidCrossEntropy: "),r>0){var u=On(r),c=On(1),l=On(.5);a=a.mul(c.sub(u)).add(l.mul(u))}var h=function(t,e){var n=gn(t,"labels","sigmoidCrossEntropyWithLogits"),r=gn(e,"logits","sigmoidCrossEntropyWithLogits");E(n.shape,r.shape,"Error in sigmoidCrossEntropyWithLogits: ");var o=r.relu(),a=r.mul(n),i=r.abs().neg().exp().log1p();return o.sub(a).add(i)}(a,i);return Oh(h,s,o)}}),Vh=An({softmaxCrossEntropy_:function(t,e,n,r,o){void 0===r&&(r=0),void 0===o&&(o=Nh.SUM_BY_NONZERO_WEIGHTS);var a=gn(t,"onehotLabels","softmaxCrossEntropy"),i=gn(e,"logits","softmaxCrossEntropy"),s=null;if(null!=n&&(s=gn(n,"weights","softmaxCrossEntropy")),E(a.shape,i.shape,"Error in softmaxCrossEntropy: "),r>0){var u=On(r),c=On(1),l=On(a.shape[1]);a=a.mul(c.sub(u)).add(u.div(l))}var h=function(t,e,n){if(void 0===n&&(n=-1),-1===n&&(n=e.rank-1),n!==e.rank-1)throw Error("Softmax cross entropy along a non-last dimension is not yet supported. Labels / logits was rank "+e.rank+" and dim was "+n);return oa((function(t,e,r){var o=e.logSumExp([n],!0),a=e.toFloat().sub(o);r([t,a]);return{value:a.mul(t).neg().sum([n]),gradFunc:function(t,e){var r=e[0],o=e[1],a=wn(t.shape,[n]);return[t.reshape(a).mul(r.toFloat().sub(o.exp())),t.reshape(a).mul(o.exp().sub(r.toFloat()))]}}}))(t,e)}(a,i);return Oh(h,s,o)}}),zh=Object.freeze({get Reduction(){return Nh},absoluteDifference:_h,computeWeightedLoss:Oh,cosineDistance:Mh,hingeLoss:Bh,huberLoss:Ph,logLoss:Lh,meanSquaredError:Wh,sigmoidCrossEntropy:Uh,softmaxCrossEntropy:Vh});function Gh(t,e){return void 0===e&&(e=!1),Lt.tidy((function(){if(2!==t.shape.length)throw new Error("qr2d() requires a 2D Tensor, but got a "+t.shape.length+"D Tensor.");for(var n=t.shape[0],r=t.shape[1],o=Cc(n),a=t.clone(),i=Bn([[1]],[1,1]),s=i.clone(),u=n>=r?r:n,c=function(t){var e,u=a,c=s,l=o;e=Lt.tidy((function(){var e=a.slice([t,t],[n-t,1]),u=e.norm(),c=a.slice([t,t],[1,1]),l=Bn([[-1]]).where(c.greater(0),Bn([[1]])),h=c.sub(l.mul(u)),f=e.div(h);s=1===f.shape[0]?i.clone():i.concat(f.slice([1,0],[f.shape[0]-1,f.shape[1]]),0);var d=l.matMul(h).div(u).neg(),p=a.slice([t,0],[n-t,r]),v=d.mul(s),g=s.transpose();if(0===t)a=p.sub(v.matMul(g.matMul(p)));else{var m=p.sub(v.matMul(g.matMul(p)));a=a.slice([0,0],[t,r]).concat(m,0)}var y=v.transpose(),x=o.slice([0,t],[n,o.shape[1]-t]);if(0===t)o=x.sub(x.matMul(s).matMul(y));else{var b=x.sub(x.matMul(s).matMul(y));o=o.slice([0,0],[n,t]).concat(b,1)}return[s,a,o]})),s=e[0],a=e[1],o=e[2],tn([u,c,l])},l=0;lr&&(o=o.slice([0,0],[n,r]),a=a.slice([0,0],[r,r])),[o,a]}))}var Hh=An({bandPart_:function(t,e,n){if(e%1!=0)throw new Error("bandPart(): numLower must be an integer, got "+e+".");if(n%1!=0)throw new Error("bandPart(): numUpper must be an integer, got "+n+".");var r=gn(t,"a","bandPart");if(r.rank<2)throw new Error("bandPart(): Rank must be at least 2, got "+r.rank+".");var o=r.shape,a=r.shape.slice(-2),i=a[0],s=a[1];if(!(e<=i))throw new Error("bandPart(): numLower ("+e+") must not be greater than the number of rows ("+i+").");if(!(n<=s))throw new Error("bandPart(): numUpper ("+n+") must not be greater than the number of columns ("+s+").");e<0&&(e=i),n<0&&(n=s);var u=Kn(0,i,1,"int32").reshape([-1,1]),c=Kn(0,s,1,"int32"),l=Oo(u,c),h=pc(l.lessEqual(On(+e,"int32")),l.greaterEqual(On(-n,"int32"))),f=Gn([i,s],r.dtype);return hr(fr(r.reshape([-1,i,s])).map((function(t){return yc(h,t,f)}))).reshape(o)}}),qh=An({gramSchmidt_:function(t){var e;if(Array.isArray(t)){e=!1,C(null!=t&&t.length>0,(function(){return"Gram-Schmidt process: input must not be null, undefined, or empty"}));for(var n=t[0].shape[0],r=function(e){C(t[e].shape[0]===n,(function(){return"Gram-Schmidt: Non-unique lengths found in the input vectors: ("+t[e].shape[0]+" vs. "+n+")"}))},o=1;o0)for(var n=0;n= 2, but got rank "+t.rank);if(2===t.rank)return Gh(t,e);var n=t.shape.slice(0,t.shape.length-2).reduce((function(t,e){return t*e})),r=fr(t.reshape([n,t.shape[t.shape.length-2],t.shape[t.shape.length-1]]),0),o=[],a=[];return r.forEach((function(t){var n=Gh(t,e),r=n[0],i=n[1];o.push(r),a.push(i)})),[hr(o,0).reshape(t.shape),hr(a,0).reshape(t.shape)]}}),jh=Object.freeze({bandPart:Hh,gramSchmidt:qh,qr:Kh});function Xh(t,e,n,r,o,a){null==r&&(r=.5),null==o&&(o=Number.NEGATIVE_INFINITY),null==a&&(a=0);var i=t.shape[0];return n=Math.min(n,i),C(0<=r&&r<=1,(function(){return"iouThreshold must be in [0, 1], but was '"+r+"'"})),C(2===t.rank,(function(){return"boxes must be a 2D tensor, but was of rank '"+t.rank+"'"})),C(4===t.shape[1],(function(){return"boxes must have 4 columns, but 2nd dimension was "+t.shape[1]})),C(1===e.rank,(function(){return"scores must be a 1D tensor"})),C(e.shape[0]===i,(function(){return"scores has incompatible shape with boxes. Expected "+i+", but was "+e.shape[0]})),C(0<=a&&a<=1,(function(){return"softNmsSigma must be in [0, 1], but was '"+a+"'"})),{maxOutputSize:n,iouThreshold:r,scoreThreshold:o,softNmsSigma:a}}var Yh=An({resizeBilinear_:function(t,e,n){void 0===n&&(n=!1);var r=gn(t,"images","resizeBilinear");C(3===r.rank||4===r.rank,(function(){return"Error in resizeBilinear: x must be rank 3 or 4, but got rank "+r.rank+"."})),C(2===e.length,(function(){return"Error in resizeBilinear: new shape must 2D, but got shape "+e+"."}));var o=r,a=!1;3===r.rank&&(a=!0,o=r.as4D(1,r.shape[0],r.shape[1],r.shape[2]));var i=e[0],s=e[1],u=Lt.runKernelFunc((function(t,e){return e([o]),t.resizeBilinear(o,i,s,n)}),{x:o},(function(t,e){return{x:function(){return Lt.runKernelFunc((function(r){return r.resizeBilinearBackprop(t,e[0],n)}),{})}}}),"ResizeBilinear",{alignCorners:n,newHeight:i,newWidth:s});return a?u.as3D(u.shape[1],u.shape[2],u.shape[3]):u}}),$h=An({resizeNearestNeighbor_:function(t,e,n){void 0===n&&(n=!1);var r=gn(t,"images","resizeNearestNeighbor");C(3===r.rank||4===r.rank,(function(){return"Error in resizeNearestNeighbor: x must be rank 3 or 4, but got rank "+r.rank+"."})),C(2===e.length,(function(){return"Error in resizeNearestNeighbor: new shape must 2D, but got shape "+e+"."})),C("float32"===r.dtype||"int32"===r.dtype,(function(){return"`images` must have `int32` or `float32` as dtype"}));var o=r,a=!1;3===r.rank&&(a=!0,o=r.as4D(1,r.shape[0],r.shape[1],r.shape[2]));var i=e[0],s=e[1],u=Lt.runKernelFunc((function(t,e){return e([o]),t.resizeNearestNeighbor(o,i,s,n)}),{batchImages:o},(function(t,e){return{batchImages:function(){return Lt.runKernelFunc((function(r){return r.resizeNearestNeighborBackprop(t,e[0],n)}),{})}}}));return a?u.as3D(u.shape[1],u.shape[2],u.shape[3]):u}}),Qh=An({nonMaxSuppression_:function(t,e,n,r,o){void 0===r&&(r=.5),void 0===o&&(o=Number.NEGATIVE_INFINITY);var a=gn(t,"boxes","nonMaxSuppression"),i=gn(e,"scores","nonMaxSuppression"),s=Xh(a,i,n,r,o);n=s.maxOutputSize,r=s.iouThreshold,o=s.scoreThreshold;var u={maxOutputSize:n,iouThreshold:r,scoreThreshold:o};return Lt.runKernelFunc((function(t){return t.nonMaxSuppression(a,i,n,r,o)}),{boxes:a,scores:i},null,"NonMaxSuppressionV3",u)}}),Jh=function(t,e,o,a,i){return void 0===a&&(a=.5),void 0===i&&(i=Number.NEGATIVE_INFINITY),n(this,void 0,void 0,(function(){var n,s,u,c,l,h,f;return r(this,(function(r){switch(r.label){case 0:return n=gn(t,"boxes","nonMaxSuppressionAsync"),s=gn(e,"scores","nonMaxSuppressionAsync"),u=Xh(n,s,o,a,i),o=u.maxOutputSize,a=u.iouThreshold,i=u.scoreThreshold,[4,Promise.all([n.data(),s.data()])];case 1:return c=r.sent(),l=c[0],h=c[1],f=Oa(l,h,o,a,i),n!==t&&n.dispose(),s!==e&&s.dispose(),[2,f]}}))}))},Zh=An({nonMaxSuppressionWithScore_:function(t,e,n,r,o,a){void 0===r&&(r=.5),void 0===o&&(o=Number.NEGATIVE_INFINITY),void 0===a&&(a=0);var i=gn(t,"boxes","nonMaxSuppression"),s=gn(e,"scores","nonMaxSuppression"),u=Xh(i,s,n,r,o,a),c={maxOutputSize:n=u.maxOutputSize,iouThreshold:r=u.iouThreshold,scoreThreshold:o=u.scoreThreshold,softNmsSigma:a=u.softNmsSigma},l=Lt.runKernel("NonMaxSuppressionV5",{boxes:i,scores:s},c);return{selectedIndices:l[0],selectedScores:l[1]}}}),tf=function(t,e,o,a,i,s){return void 0===a&&(a=.5),void 0===i&&(i=Number.NEGATIVE_INFINITY),void 0===s&&(s=0),n(this,void 0,void 0,(function(){var n,u,c,l,h,f,d;return r(this,(function(r){switch(r.label){case 0:return n=gn(t,"boxes","nonMaxSuppressionAsync"),u=gn(e,"scores","nonMaxSuppressionAsync"),c=Xh(n,u,o,a,i,s),o=c.maxOutputSize,a=c.iouThreshold,i=c.scoreThreshold,s=c.softNmsSigma,[4,Promise.all([n.data(),u.data()])];case 1:return l=r.sent(),h=l[0],f=l[1],d=Ma(h,f,o,a,i,s),n!==t&&n.dispose(),u!==e&&u.dispose(),[2,d]}}))}))},ef=An({cropAndResize_:function(t,e,n,r,o,a){var i=gn(t,"image","cropAndResize"),s=gn(e,"boxes","cropAndResize","float32"),u=gn(n,"boxInd","cropAndResize","int32");o=o||"bilinear",a=a||0;var c=s.shape[0];return C(4===i.rank,(function(){return"Error in cropAndResize: image must be rank 4,but got rank "+i.rank+"."})),C(2===s.rank&&4===s.shape[1],(function(){return"Error in cropAndResize: boxes must be have size ["+c+",4] but had shape "+s.shape+"."})),C(1===u.rank&&u.shape[0]===c,(function(){return"Error in cropAndResize: boxInd must be have size ["+c+"] but had shape "+s.shape+"."})),C(2===r.length,(function(){return"Error in cropAndResize: cropSize must be of length 2, but got length "+r.length+"."})),C(r[0]>=1&&r[1]>=1,(function(){return"cropSize must be atleast [1,1], but was "+r})),C("bilinear"===o||"nearest"===o,(function(){return"method must be bilinear or nearest, but was "+o})),Lt.runKernelFunc((function(t,e){return t.cropAndResize(i,s,u,r,o,a)}),{images:i,boxes:s,boxInd:u},null,"CropAndResize",{method:o,extrapolationValue:a,cropSize:r})}}),nf=Object.freeze({resizeBilinear:Yh,resizeNearestNeighbor:$h,nonMaxSuppression:Qh,nonMaxSuppressionAsync:Jh,nonMaxSuppressionWithScore:Zh,nonMaxSuppressionWithScoreAsync:tf,cropAndResize:ef}),rf=function(t,e){return!(t>0)||"linear"===e},of=function(t,e,n){if(null==n||"linear"===n)return t;if("relu"===n)return t.mul(e.step());throw new Error("Gradient for activation "+n+" has not been implemented yet.")},af=function(t,e){var n=e,r=Br(t.shape,e.shape);return r.length>0&&(n=n.sum(r)),n.reshape(t.shape)},sf=function(t,e,n){if("linear"===e)return t;if("relu"===e)return ah(t);if("elu"===e)return nh(t);if("relu6"===e)return ih(t);if("prelu"===e)return oh(t,n);throw new Error("Unknown fused activation "+e+".")};var uf=An({fusedMatMul_:function(t){var e,n=t.a,r=t.b,o=t.transposeA,a=void 0!==o&&o,i=t.transposeB,s=void 0!==i&&i,u=t.bias,c=t.activation,l=void 0===c?"linear":c,h=t.preluActivationWeights;if(!1===rf(Lt.state.gradientDepth,l)){var f=El(n,r,a,s);return null!=u&&(f=Or(f,u)),sf(f,l,h)}var d=gn(n,"a","fused matMul"),p=gn(r,"b","fused matMul");e=Nt(d,p),d=e[0],p=e[1];var v=a?d.shape[d.rank-2]:d.shape[d.rank-1],g=s?p.shape[p.rank-1]:p.shape[p.rank-2],m=a?d.shape[d.rank-1]:d.shape[d.rank-2],y=s?p.shape[p.rank-2]:p.shape[p.rank-1],x=d.shape.slice(0,-2),b=p.shape.slice(0,-2),w=k(x),E=k(b);C(d.rank>=2&&p.rank>=2&&d.rank===p.rank,(function(){return"Error in fused matMul: inputs must have the same rank of at least 2, got ranks "+d.rank+" and "+p.rank+"."})),C(S(x,b),(function(){return"Error in fused matMul: outer dimensions ("+x+") and ("+b+") of Tensors with shapes "+d.shape+" and "+p.shape+" must match."})),C(v===g,(function(){return"Error in fused matMul: inner shapes ("+v+") and ("+g+") of Tensors with shapes "+d.shape+" and "+p.shape+" and transposeA="+a+" and transposeB="+s+" must match."}));var R,I,A=d.shape.slice(0,-2).concat([m,y]),T=a?d.as3D(w,v,m):d.as3D(w,m,v),D=s?p.as3D(E,y,g):p.as3D(E,g,y);null!=u&&Pr(A,(R=Nt(R=gn(u,"bias","fused matMul"),d)[0]).shape),null!=h&&(I=gn(h,"prelu weights","fused matMul"));var N={a:T,b:D};null!=u&&(N.bias=R),null!=h&&(N.preluActivationWeights=I);var F=[T,D];return Lt.runKernelFunc((function(t,e){var n=t.fusedBatchMatMul({a:T,b:D,transposeA:a,transposeB:s,bias:R,activation:l,preluActivationWeights:I});return e([T,D,n]),n}),N,(function(t,e){var n=e[0],r=e[1],o=e[2],i=of(t,o,l),c={};return null!=u&&(c={bias:function(){return af(R,i)}}),a||s?!a&&s?Object.assign({a:function(){return i.matMul(r,!1,!1)},b:function(){return i.matMul(n,!0,!1)}},c):a&&!s?Object.assign({a:function(){return r.matMul(i,!1,!0)},b:function(){return n.matMul(i,!1,!1)}},c):Object.assign({a:function(){return r.matMul(i,!0,!0)},b:function(){return i.matMul(n,!0,!0)}},c):Object.assign({a:function(){return i.matMul(r,!1,!0)},b:function(){return n.matMul(i,!0,!1)}},c)}),"_FusedMatMul",{transposeA:a,transposeB:s,activation:l},F,[!0]).reshape(A)}}),cf=An({fusedConv2d_:function(t){var e=t.x,n=t.filter,r=t.strides,o=t.pad,a=t.dataFormat,i=void 0===a?"NHWC":a,s=t.dilations,u=void 0===s?[1,1]:s,c=t.dimRoundingMode,l=t.bias,h=t.activation,f=void 0===h?"linear":h,d=t.preluActivationWeights;if(f=f||"linear",!1===rf(Lt.state.gradientDepth,f)){var p=dl(e,n,r,o,i,u,c);return null!=l&&(p=Or(p,l)),sf(p,f,d)}var v=gn(e,"x","conv2d"),g=gn(n,"filter","conv2d"),m=v,y=!1;3===v.rank&&(y=!0,m=v.as4D(1,v.shape[0],v.shape[1],v.shape[2])),C(4===m.rank,(function(){return"Error in fused conv2d: input must be rank 4, but got rank "+m.rank+"."})),C(4===g.rank,(function(){return"Error in fused conv2d: filter must be rank 4, but got rank "+g.rank+"."})),null!=c&&C(A(o),(function(){return"Error in fused conv2d: pad must be an integer when using, dimRoundingMode "+c+" but got pad "+o+"."})),C(m.shape[3]===g.shape[2],(function(){return"Error in conv2d: depth of input ("+m.shape[3]+") must match input depth for filter "+g.shape[2]+"."})),C(Ca(r,u),(function(){return"Error in conv2D: Either strides or dilations must be 1. Got strides "+r+" and dilations '"+u+"'"})),C("NHWC"===i,(function(){return"Error in conv2d: got dataFormat of "+i+" but only NHWC is currently supported."}));var x,b,w=pa(m.shape,g.shape,r,u,o,c);null!=l&&(x=Nt(x=gn(l,"bias","fused conv2d"),v)[0],Pr(w.outShape,x.shape)),null!=d&&(b=gn(d,"prelu weights","fused conv2d"));var E={x:m,filter:g};null!=l&&(E.bias=x),null!=d&&(E.preluActivationWeights=b);var R=[g,m],I=Lt.runKernelFunc((function(t,e){var n=t.fusedConv2d({input:m,filter:g,convInfo:w,bias:x,activation:f,preluActivationWeights:b});return e([g,m,n]),n}),E,(function(t,e){var n=e,a=n[0],i=n[1],s=n[2],c=of(t,s,f);C(wa(u),(function(){return"Error in gradient of fused conv2D: dilation rates greater than 1 are not yet supported in gradients. Got dilations '"+u+"'"}));var h={};return null!=l&&(h={bias:function(){return af(x,c)}}),Object.assign({x:function(){return gl(i.shape,c,a,r,o)},filter:function(){return vl(i,c,a.shape,r,o)}},h)}),"FusedConv2D",{convInfo:w,activation:f},R,[!0]);return y?I.as3D(I.shape[1],I.shape[2],I.shape[3]):I}}),lf=An({fusedDepthwiseConv2d_:function(t){var e=t.x,n=t.filter,r=t.strides,o=t.pad,a=t.dataFormat,i=void 0===a?"NHWC":a,s=t.dilations,u=void 0===s?[1,1]:s,c=t.dimRoundingMode,l=t.bias,h=t.activation,f=void 0===h?"linear":h,d=t.preluActivationWeights;if(!1===rf(Lt.state.gradientDepth,f)){var p=ml(e,n,r,o,i,u,c);return null!=l&&(p=Or(p,l)),sf(p,f,d)}var v=gn(e,"x","depthwiseConv2d"),g=gn(n,"filter","depthwiseConv2d"),m=v,y=!1;3===v.rank&&(y=!0,m=v.as4D(1,v.shape[0],v.shape[1],v.shape[2])),C(4===m.rank,(function(){return"Error in fused depthwiseConv2d: input must be rank 4, but got rank "+m.rank+"."})),C(4===g.rank,(function(){return"Error in fused depthwiseConv2d: filter must be rank 4, but got rank "+g.rank+"."})),C(m.shape[3]===g.shape[2],(function(){return"Error in fused depthwiseConv2d: number of input channels ("+m.shape[3]+") must match the inChannels dimension in filter "+g.shape[2]+"."})),null==u&&(u=[1,1]),C(Ca(r,u),(function(){return"Error in fused depthwiseConv2d: Either strides or dilations must be 1. Got strides "+r+" and dilations '"+u+"'"})),null!=c&&C(A(o),(function(){return"Error in fused depthwiseConv2d: pad must be an integer when using dimRoundingMode "+c+" but got pad "+o+"."}));var x,b,w=pa(m.shape,g.shape,r,u,o,c,!0);null!=l&&(x=Nt(x=gn(l,"bias","fused conv2d"),v)[0],Pr(w.outShape,x.shape)),null!=d&&(b=gn(d,"prelu weights","fused depthwiseConv2d"));var E={x:m,filter:g};null!=l&&(E.bias=x),null!=d&&(E.preluActivationWeights=b);var R=[g,m],I=Lt.runKernelFunc((function(t,e){var n=t.fusedDepthwiseConv2D({input:m,filter:g,convInfo:w,bias:x,activation:f,preluActivationWeights:b});return e([g,m,n]),n}),E,(function(t,e){C(wa(u),(function(){return"Error in gradient of fused depthwiseConv2d: dilation rates greater than 1 are not yet supported. Got dilations '"+u+"'"}));var n=e[0],r=e[1],o=e[2],a=of(t,o,f),i={};return null!=l&&(i={bias:function(){return af(x,a)}}),Object.assign({x:function(){return yl(r.shape,a,n,w)},filter:function(){return xl(r,a,n.shape,w)}},i)}),"FusedDepthwiseConv2D",{convInfo:w,activation:f},R,[!0]);return y?I.as3D(I.shape[1],I.shape[2],I.shape[3]):I}}),hf=Object.freeze({matMul:uf,conv2d:cf,depthwiseConv2d:lf}),ff=Object.freeze({image:nf,linalg:jh,losses:zh,spectral:bh,fused:hf,signal:Dh,add:Or,addN:$u,batchNorm:nc,batchNormalization:ec,batchNorm2d:ac,batchNormalization2d:oc,batchNorm3d:uc,batchNormalization3d:sc,batchNorm4d:hc,batchNormalization4d:lc,broadcastTo:fc,clone:dc,div:Bo,divNoNan:bc,eye:Cc,multinomial:Ec,oneHot:Rc,pad:Ic,pad1d:kc,pad2d:Sc,pad3d:Ac,pad4d:Tc,rand:Dc,randomGamma:Uc,randomNormal:Vc,randomUniform:zc,square:Gc,squaredDifference:Hc,tile:wc,truncatedNormal:qc,conv1d:fl,conv2d:dl,conv3d:pl,depthwiseConv2d:ml,separableConv2d:bl,conv2dTranspose:wl,conv3dTranspose:Cl,op:An,booleanMaskAsync:ul,complex:Tn,real:Dn,imag:Nn,concat:Yn,concat1d:$n,concat2d:Qn,concat3d:Jn,concat4d:Zn,split:tr,matMul:El,dot:Rl,outerProduct:Il,reverse:kl,reverse1d:Sl,reverse2d:Al,reverse3d:Tl,reverse4d:Dl,maxPool:_l,avgPool:Ol,pool:Ml,maxPool3d:Bl,avgPool3d:Pl,maxPoolWithArgmax:Ll,slice:Wl,slice1d:Ul,slice2d:Vl,slice3d:zl,slice4d:Gl,abs:Lr,acos:Wr,acosh:Ur,asin:Vr,asinh:zr,atan:Gr,atanh:Hr,ceil:qr,clipByValue:Kr,cos:jr,cosh:Xr,erf:Yr,exp:$r,expm1:Qr,floor:Jr,log:Zr,log1p:to,logSigmoid:eo,neg:no,reciprocal:ro,round:oo,rsqrt:ao,sigmoid:io,sign:so,isNaN:uo,isInf:co,isFinite:lo,sin:ho,sinh:fo,softplus:po,sqrt:vo,step:go,tan:mo,tanh:yo,all:ql,any:Kl,argMax:jl,argMin:Xl,logSumExp:Yl,max:$l,mean:Ql,min:Jl,moments:Zl,sum:th,prod:eh,equal:Kc,equalStrict:jc,greater:Xc,greaterEqual:Yc,greaterEqualStrict:$c,greaterStrict:Qc,less:Jc,lessEqual:Zc,lessEqualStrict:tl,lessStrict:el,notEqual:nl,notEqualStrict:rl,addStrict:xo,atan2:bo,divStrict:wo,floorDiv:Co,maximum:Eo,maximumStrict:Ro,minimum:Io,minimumStrict:ko,mod:So,modStrict:Ao,mul:To,mulStrict:Do,pow:No,powStrict:Fo,squaredDifferenceStrict:_o,sub:Oo,subStrict:Mo,elu:nh,leakyRelu:rh,prelu:oh,relu:ah,relu6:ih,selu:sh,logicalAnd:pc,logicalNot:vc,logicalOr:gc,logicalXor:mc,where:yc,whereAsync:xc,buffer:er,print:nr,batchToSpaceND:rr,cast:or,cumsum:ar,depthToSpace:ir,expandDims:sr,reshape:ur,spaceToBatchND:cr,squeeze:lr,stack:hr,unstack:fr,setdiff1dAsync:dr,fill:Hn,linspace:qn,ones:zn,range:Kn,scalar:On,tensor:Fn,tensor1d:Mn,tensor2d:Bn,tensor3d:Pn,tensor4d:Ln,tensor5d:Wn,tensor6d:Un,variable:Vn,zeros:Gn,onesLike:jn,zerosLike:Xn,transpose:ua,softmax:ia,logSoftmax:sa,localResponseNormalization:uh,norm:ch,gather:il,unsortedSegmentSum:sl,basicLSTMCell:lh,multiRNNCell:hh,movingAverage:fh,stridedSlice:dh,topk:ph,scatterND:vh,fft:gh,ifft:mh,rfft:yh,irfft:xh,sparseToDense:wh,gatherND:Ch,diag:Eh,dropout:Rh,hannWindow:kh,hammingWindow:Sh,frame:Ah,stft:Th,inTopKAsync:Fh});function df(t,e){Array.isArray(t)||(t=[t]),t.forEach((function(t){null!=t&&C("complex64"!==t.dtype,(function(){return e+" does not support complex64 tensors."}))}))}function pf(t,e,n,r,o,a){for(var i=o.strideHeight,s=o.strideWidth,u=o.dilationHeight,c=o.dilationWidth,l=o.effectiveFilterHeight,h=o.effectiveFilterWidth,f=o.padInfo.top,d=o.padInfo.left,p="max"===a?Number.NEGATIVE_INFINITY:Number.POSITIVE_INFINITY,v=er(o.outShape,n),g=v.values,m=o.outShape[1]*o.outShape[2]*o.outShape[3],y=o.outShape[2]*o.outShape[3],x=o.outShape[3],b=0;b_?_=W:"avg"===a&&(O+=W,M++)}if(isNaN(_))break}g[A+T*x+E]="avg"===a?O/M:_}return v}function vf(t,e,n,r,o,a){void 0===o&&(o=!1),void 0===a&&(a=!1);for(var i=er(r.outShape,"int32"),s=r.strideHeight,u=r.strideWidth,c=r.dilationHeight,l=r.dilationWidth,h=r.effectiveFilterHeight,f=r.effectiveFilterWidth,d=r.padInfo.top,p=r.padInfo.left,v=er(e,n,t),g=0;gk&&(k=F,S=o?a?((g*r.inHeight+A)*r.inWidth+D)*r.inChannels+m:(A*r.inWidth+D)*r.inChannels+m:T*f+N)}i.set(S,g,y,C,m)}}return i}function gf(t,e,n,r){if("linear"===n)return t.linear(e);if("relu"===n)return t.relu(e);if("elu"===n)return t.elu(e);if("relu6"===n)return t.relu6(e);if("prelu"===n)return t.prelu(e,r);throw new Error("Activation "+n+" has not been implemented for the CPU backend.")}var mf=function(t){function o(){var e=t.call(this)||this;return e.blockSize=48,e.firstUse=!0,e.data=new ca(e,Lt),e}return e(o,t),o.prototype.write=function(t,e,n){this.firstUse&&(this.firstUse=!1,i().get("IS_NODE")&&dn("\n============================\nHi there 👋. Looks like you are running TensorFlow.js in Node.js. To speed things up dramatically, install our node backend, which binds to TensorFlow C++, by running npm i @tensorflow/tfjs-node, or npm i @tensorflow/tfjs-node-gpu if you have CUDA. Then call require('@tensorflow/tfjs-node'); (-gpu suffix for CUDA) at the start of your program. Visit https://github.com/tensorflow/tfjs-node for more details.\n============================"));var r={};return this.data.set(r,{values:t,dtype:n}),r},o.prototype.move=function(t,e,n,r){this.data.set(t,{values:e,dtype:r})},o.prototype.numDataIds=function(){return this.data.numDataIds()},o.prototype.read=function(t){return n(this,void 0,void 0,(function(){return r(this,(function(e){return[2,this.readSync(t)]}))}))},o.prototype.readSync=function(t){var e=this.data.get(t),n=e.dtype,r=e.complexTensors;return"complex64"===n?Aa(this.readSync(r.real.dataId),this.readSync(r.imag.dataId)):this.data.get(t).values},o.prototype.bufferSync=function(t){var e=this.readSync(t.dataId),n=e;if("string"===t.dtype)try{n=e.map((function(t){return ot(t)}))}catch(t){throw new Error("Failed to decode encoded string bytes into utf-8")}return er(t.shape,t.dtype,n)},o.prototype.makeOutput=function(t,e,n){var r=this.write(t,e,n);return Lt.makeTensorFromDataId(r,e,n,this)},o.prototype.disposeData=function(t){if(this.data.has(t)){var e=this.data.get(t).complexTensors;null!=e&&(e.real.dispose(),e.imag.dispose()),this.data.delete(t)}},o.prototype.time=function(t){return n(this,void 0,void 0,(function(){var e;return r(this,(function(n){return e=et(),t(),[2,{kernelMs:et()-e}]}))}))},o.prototype.memory=function(){return{unreliable:!0,reasons:["The reported memory is an upper bound. Due to automatic garbage collection, the true allocated memory may be less."]}},o.prototype.complex=function(t,e){var n=this.makeOutput(null,t.shape,"complex64");return this.data.get(n.dataId).complexTensors={real:Lt.keep(t.clone()),imag:Lt.keep(e.clone())},n},o.prototype.real=function(t){return this.data.get(t.dataId).complexTensors.real.clone()},o.prototype.imag=function(t){return this.data.get(t.dataId).complexTensors.imag.clone()},o.prototype.slice=function(t,e,n){if(df(t,"slice"),$o(t.shape,e,n)){var r=Qo(e,t.strides),o=k(n);return Fn(this.readSync(t.dataId).subarray(r,r+o),n,t.dtype)}for(var a=er(n,t.dtype),i=this.bufferSync(t),s=0;sf&&(f=v,d=p)}u[l]=d}return i},o.prototype.cumsum=function(t,e,n,r){if(df(t,"cumsum"),e!==t.rank-1)throw new Error("backend.cumsum in CPU expects an inner-most axis="+(t.rank-1)+" but got axis="+e);for(var o=Tt(t.dtype,"int32"),a=Gn(t.shape,o),i=this.readSync(a.dataId),s=this.readSync(t.dataId),u=t.shape[t.rank-1],c=r?function(t,e){return t+u-e-1}:function(t,e){return t+e},l=0;le?1:0}))},o.prototype.greaterEqual=function(t,e){return df([t,e],"greaterEqual"),this.broadcastedBinaryOp(t,e,"bool",(function(t,e){return t>=e?1:0}))},o.prototype.logicalNot=function(t){df(t,"logicalNot");for(var e=this.readSync(t.dataId),n=new Uint8Array(e.length),r=0;r1||1===e.rank?1:k(e.shape.slice(1)),l=0;l=0&&e>=0?n:(n+e)%e}))},o.prototype.max=function(t,e){df(t,"max"),Cn("max",e,t.rank);for(var n=bn(t.shape,e),r=n[0],o=n[1],a=Gn(r,t.dtype),i=k(o),s=this.readSync(a.dataId),u=this.readSync(t.dataId),c=0;ch&&(h=d)}s[c]=h}return a},o.prototype.maximum=function(t,e){return df([t,e],"maximum"),this.broadcastedBinaryOp(t,e,t.dtype,(function(t,e){return Math.max(t,e)}))},o.prototype.all=function(t,e){df(t,"all"),Cn("all",e,t.rank);for(var n=bn(t.shape,e),r=n[0],o=n[1],a=Gn(r,t.dtype),i=k(o),s=this.readSync(a.dataId),u=this.readSync(t.dataId),c=0;c0?n[r]=1:n[r]=0;return this.makeOutput(n,t.shape,"float32")},o.prototype.isNaN=function(t){df(t,"x");for(var e=this.readSync(t.dataId),n=new Uint8Array(e.length),r=0;r.5?n[r]=Math.ceil(e[r]):n[r]=o%2==0?o:o+1}return this.makeOutput(n,t.shape,"float32")},o.prototype.exp=function(t){df(t,"exp");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r=0?o:Math.exp(o)-1}return this.makeOutput(e,t.shape,"float32")},o.prototype.eluDer=function(t,e){df([t,e],"eluDer");for(var n=new Float32Array(e.size),r=this.readSync(e.dataId),o=this.readSync(t.dataId),a=0;a=1?o[a]:o[a]*(i+1)}return this.makeOutput(n,e.shape,"float32")},o.prototype.selu=function(t){df(t,"selu");for(var e=su,n=uu,r=new Float32Array(t.size),o=this.readSync(t.dataId),a=0;a=0?n*i:e*(Math.exp(i)-1)}return this.makeOutput(r,t.shape,"float32")},o.prototype.clip=function(t,e,n){df(t,"clip");for(var r=new Float32Array(t.size),o=this.readSync(t.dataId),a=0;an?n:i-e,i=r[o]0?1:e}return this.makeOutput(n,t.shape,"float32")},o.prototype.fusedConv2d=function(t){var e=t.input,n=t.filter,r=t.convInfo,o=t.bias,a=t.activation,i=t.preluActivationWeights,s=this.conv2d(e,n,r);return o&&(s=this.add(s,o)),a&&(s=gf(this,s,a,i)),s},o.prototype.conv2d=function(t,e,n){df([t,e],"conv2d");for(var r=n.filterHeight,o=n.filterWidth,a=n.dilationHeight,i=n.dilationWidth,s=n.padInfo.left,u=n.padInfo.top,c="channelsLast"===n.dataFormat,l=er(n.outShape,t.dtype),h=t.strides[0],f=c?t.strides[1]:t.strides[2],d=c?t.strides[2]:1,p=c?1:t.strides[1],v=l.strides[0],g=c?l.strides[1]:l.strides[2],m=c?l.strides[2]:1,y=c?1:l.strides[1],x=this.readSync(t.dataId),b=this.readSync(e.dataId),w=l.values,C=0;C=n.inHeight))for(var D=A*e.strides[0],N=E+T*f,F=0;F=n.inWidth))for(var P=N+B*d,L=D+M*e.strides[1],W=0;W=n.inDepth))for(var R=C*e.strides[0],I=m+E*t.strides[1],k=0;k=n.inHeight))for(var N=R+T*e.strides[1],F=I+D*t.strides[2],_=0;_=n.inWidth))for(var L=N+B*e.strides[2],W=F+P*n.inChannels,U=L,V=0;V=n.inHeight))for(var C=b*e.strides[0],E=v+w*t.strides[1],R=0;R=n.inWidth))for(var T=C+S*e.strides[1],D=E+A*n.inChannels,N=I,F=T,_=0;_=r.outHeight||Math.floor(R)!==R))for(var I=0;I=r.outWidth||Math.floor(k)!==k)){var S=l*h-1-a.get(g,R,k,m)===E*h+I?1:0;if(0!==S)C+=v.get(g,R,k,m)*S}}}p.set(C,g,y,x,m)}return p.toTensor()},o.prototype.avgPoolBackprop=function(t,e,n){df([t,e],"avgPoolBackprop");for(var r=n.strideHeight,o=n.strideWidth,a=n.filterHeight,i=n.filterWidth,s=n.dilationHeight,u=n.dilationWidth,c=n.effectiveFilterHeight,l=n.effectiveFilterWidth,h=l-1-n.padInfo.left,f=c-1-n.padInfo.top,d=er(e.shape,"float32"),p=1/(a*i),v=this.bufferSync(t),g=0;g=n.outHeight||Math.floor(R)!==R))for(var I=0;I=n.outWidth||Math.floor(k)!==k))C+=v.get(g,R,k,m)}}d.set(C*p,g,y,x,m)}return d.toTensor()},o.prototype.pool3d=function(t,e,n){df(t,"pool3d");for(var r=e.strideDepth,o=e.strideHeight,a=e.strideWidth,i=e.dilationDepth,s=e.dilationHeight,u=e.dilationWidth,c=e.effectiveFilterDepth,l=e.effectiveFilterHeight,h=e.effectiveFilterWidth,f=e.padInfo.front,d=e.padInfo.top,p=e.padInfo.left,v="max"===n?Number.NEGATIVE_INFINITY:Number.POSITIVE_INFINITY,g=this.readSync(t.dataId),m=er(e.outShape,t.dtype),y=m.values,x=e.outShape[1]*e.outShape[2]*e.outShape[3]*e.outShape[4],b=e.outShape[2]*e.outShape[3]*e.outShape[4],w=e.outShape[3]*e.outShape[4],C=e.outShape[4],E=0;Ez?z=$:"avg"===n&&(G+=$,H++),isNaN(z))break}if(isNaN(z))break}if(isNaN(z))break}y[V+k]="avg"===n?G/H:z}}}return m.toTensor()},o.prototype.avgPool3d=function(t,e){return df(t,"avgPool3d"),this.pool3d(t,e,"avg").toFloat()},o.prototype.avgPool3dBackprop=function(t,e,n){df([t,e],"avgPool3dBackprop");for(var r=n.strideDepth,o=n.strideHeight,a=n.strideWidth,i=n.filterDepth,s=n.filterHeight,u=n.filterWidth,c=n.dilationDepth,l=n.dilationHeight,h=n.dilationWidth,f=n.effectiveFilterDepth,d=n.effectiveFilterHeight,p=n.effectiveFilterWidth,v=f-1-n.padInfo.front,g=p-1-n.padInfo.left,m=d-1-n.padInfo.top,y=er(e.shape,"float32"),x=1/(i*s*u),b=this.bufferSync(t),w=0;w=n.outDepth||Math.floor(N)!==N))for(var F=0;F=n.outHeight||Math.floor(_)!==_))for(var O=0;O=n.outWidth||Math.floor(M)!==M))T+=b.get(w,N,_,M,C)}}}y.set(T*x,w,E,R,I,C)}return y.toTensor()},o.prototype.maxPool3d=function(t,e){return df(t,"maxPool3d"),this.pool3d(t,e,"max").toFloat()},o.prototype.maxPool3dPositions=function(t,e){for(var n=er(e.outShape,"int32"),r=e.strideDepth,o=e.strideHeight,a=e.strideWidth,i=e.dilationDepth,s=e.dilationHeight,u=e.dilationWidth,c=e.effectiveFilterDepth,l=e.effectiveFilterHeight,h=e.effectiveFilterWidth,f=e.padInfo.front,d=e.padInfo.top,p=e.padInfo.left,v=this.bufferSync(t),g=0;g=D&&(D=L,N=_*l*h+M*l+P)}n.set(N,g,y,C,k,m)}}}return n.toTensor()},o.prototype.maxPool3dBackprop=function(t,e,n,r){df([e,n],"maxPool3dBackprop");for(var o=this.maxPool3dPositions(e,r),a=r.strideDepth,i=r.strideHeight,s=r.strideWidth,u=r.dilationDepth,c=r.dilationHeight,l=r.dilationWidth,h=r.effectiveFilterDepth,f=r.effectiveFilterHeight,d=r.effectiveFilterWidth,p=h-1-r.padInfo.front,v=d-1-r.padInfo.left,g=f-1-r.padInfo.top,m=er(e.shape,"float32"),y=this.bufferSync(o),x=this.bufferSync(t),b=0;b=r.outDepth||Math.floor(D)!==D))for(var N=0;N=r.outHeight||Math.floor(F)!==F))for(var _=0;_=r.outWidth||Math.floor(O)!==O)){var M=h*f*d-1-y.get(b,D,F,O,w)===T*f*d+N*d+_?1:0;if(0!==M)A+=x.get(b,D,F,O,w)*M}}}}m.set(A,b,C,E,R,w)}return m.toTensor()},o.prototype.cast=function(t,e){return Ra(t,e,this)},o.prototype.reshape=function(t,e){return Ia(t,e)},o.prototype.avgPool=function(t,e){return df(t,"avgPool"),df(t,"maxPool"),pf(this.readSync(t.dataId),t.shape,t.dtype,t.strides,e,"avg").toTensor().toFloat()},o.prototype.resizeBilinear=function(t,e,n,r){df(t,"resizeBilinear");for(var o=t.shape,a=o[0],i=o[1],s=o[2],u=o[3],c=this.readSync(t.dataId),l=new Float32Array(k([a,e,n,u])),h=[r&&e>1?i-1:i,r&&n>1?s-1:s],f=[r&&e>1?e-1:e,r&&n>1?n-1:n],d=0,p=h[0]/f[0],v=h[1]/f[1],g=0;g1?a-1:a,n&&l>1?i-1:i],d=[n&&c>1?c-1:c,n&&l>1?l-1:l],p=f[0]/d[0],v=f[1]/d[1],g=this.readSync(t.dataId),m=0,y=0;y1?i-1:i,r&&n>1?s-1:s],f=[r&&e>1?e-1:e,r&&n>1?n-1:n],d=h[0]/f[0],p=h[1]/f[1],v=0,g=0;g1?a-1:a,n&&l>1?i-1:i],p=[n&&c>1?c-1:c,n&&l>1?l-1:l],v=d[0]/p[0],g=d[1]/p[1],m=1/v,y=1/g,x=2*Math.ceil(m)+2,b=2*Math.ceil(y)+2,w=0;w=c)){var M=C+O*t.strides[1],B=O*v;if(E===Math.min(a-1,n?Math.round(B):Math.floor(B)))for(var P=0;P=l)){var W=M+L*t.strides[2],U=L*g;S===Math.min(i-1,n?Math.round(U):Math.floor(U))&&(F+=f[W+N])}}}}h[A+N]=F}return Ln(h,e.shape,e.dtype)},o.prototype.batchNormalization=function(t,e,n,r,o,a){df([t,e,n,o,a],"batchNorm");for(var i=this.readSync(t.dataId),s=this.readSync(e.dataId),u=this.readSync(n.dataId),c=o?this.readSync(o.dataId):new Float32Array([1]),l=a?this.readSync(a.dataId):new Float32Array([0]),h=new Float32Array(i.length),f=l.length,d=c.length,p=u.length,v=s.length,g=0,m=0,y=0,x=0,b=0;b=f&&(g=0),m>=v&&(m=0),y>=d&&(y=0),x>=p&&(x=0);return Ln(h,t.shape)},o.prototype.localResponseNormalization4D=function(t,e,n,r,o){df(t,"localResponseNormalization4D");var a=t.shape[3],i=a-1,s=this.readSync(t.dataId),u=t.size,c=new Float32Array(u);function l(t){for(var n=t%a,r=t-n+Math.max(0,n-e),o=t-n+Math.min(n+e,i),u=0;r<=o;r++){var c=s[r];u+=c*c}return u}for(var h=0;h=0&&a[i]1,(function(){return"blockSize should be > 1 for depthToSpace, but was: "+e}));for(var r=t.shape[0],o=t.shape[1],a=t.shape[2],i=t.shape[3],s=o*e,u=a*e,c=i/(e*e),l=this.readSync(t.dataId),h=new Float32Array(r*s*u*c),f=0,d=0;d=s))for(var S=f>1?(R-C)*(u-1)/(f-1):0,A=d>1?(I-E)*(c-1)/(d-1):0,T=0;T1?C*(u-1)+T*S:.5*(C+R)*(u-1);if(D<0||D>u-1)for(var N=0;N1?E*(c-1)+N*A:.5*(E+I)*(c-1))<0||q>c-1)for(F=0;F1?E*(c-1)+N*A:.5*(E+I)*(c-1))<0||q>c-1)for(F=0;F=t.size/s)throw new Error("Invalid indices: "+d+" does not index into "+t.shape);for(var m=0;m=r/o)throw new Error("Invalid indices: "+v+" does not index into "+n);for(var x=0;x6)throw Error("Transpose for rank "+e+" is not yet supported");for(var n=["resRC.x","resRC.y","resRC.z","resRC.w","resRC.u","resRC.v"],r=new Array(e),o=0;o6)throw Error("Packed transpose for rank "+this.rank+" is not yet supported.");var o=ui(this.rank),a=ja("rc",this.rank),i=new Array(this.rank);for(r=0;r0&&(e=e.sum(r)),e.reshape(n.shape)},b:function(){var e=t,n=Br(r.shape,o);return n.length>0&&(e=e.sum(n)),e.reshape(r.shape)}}}},{kernelName:"AddN",saveAllInputs:!0,gradFunc:function(t,e){var n={};return e.forEach((function(e,r){n[r]=function(){return t.clone()}})),n}},{kernelName:Sr,gradFunc:function(t,e,n){for(var r=n,o=r.inputShape,a=r.shape,i=Array.from(a),s=o.length-1;s>=0;s--)if(o[s]===a[s])i[s]=1;else if(1!==o[s])throw new Error("broadcastTo(): ["+o+"] cannot be broadcast to ["+a+"].");var u=[];for(s=0;s1&&u.push(s);return{x:function(){return t.sum(u,!0)}}}},{kernelName:wr,inputsToSave:["a","b"],gradFunc:function(t,e){var n=e[0],r=e[1],o=Pr(n.shape,r.shape);return{a:function(){var e=Bo(t,r.toFloat()),a=Br(n.shape,o);return a.length>0?th(e,a).reshape(n.shape):e},b:function(){var e=t.mul(n.toFloat()),a=Br(r.shape,o);a.length>0&&(e=th(e,a).reshape(r.shape));var i=Gc(r);return no(Bo(e,i.toFloat()))}}}},{kernelName:"FusedBatchNorm",inputsToSave:["x","mean","variance","scale"],gradFunc:function(t,e,n){var r=n.varianceEpsilon,o=e[0],a=e[1],i=e[2],s=e[3],u=Ju(o),c=null==s?On(1):s,l=Br(a.shape,u.shape),h=[];if(1===a.rank){for(var f=0;f0,(function(){return"scheme must not be an empty string."}));var r=t.getInstance();C(null==r.managers[e],(function(){return"A model store manager is already registered for scheme '"+e+"'."})),r.managers[e]=n},t.getManager=function(t){var e=this.getInstance().managers[t];if(null==e)throw new Error("Cannot find model manager for scheme '"+t+"'");return e},t.getSchemes=function(){return Object.keys(this.getInstance().managers)},t}();function td(t){if(-1===t.indexOf(Jf))throw new Error("The url string provided does not contain a scheme. Supported schemes are: "+Zf.getSchemes().join(","));return{scheme:t.split(Jf)[0],path:t.split(Jf)[1]}}function ed(t,e,o){return void 0===o&&(o=!1),n(this,void 0,void 0,(function(){var n,a,i,s,u,c,l,h,f;return r(this,(function(r){switch(r.label){case 0:return C(t!==e,(function(){return"Old path and new path are the same: '"+t+"'"})),C((n=Qf.getLoadHandlers(t)).length>0,(function(){return"Copying failed because no load handler is found for source URL "+t+"."})),C(n.length<2,(function(){return"Copying failed because more than one ("+n.length+") load handlers for source URL "+t+"."})),a=n[0],C((i=Qf.getSaveHandlers(e)).length>0,(function(){return"Copying failed because no save handler is found for destination URL "+e+"."})),C(i.length<2,(function(){return"Copying failed because more than one ("+n.length+") save handlers for destination URL "+e+"."})),s=i[0],u=td(t).scheme,c=td(t).path,l=u===td(t).scheme,[4,a.load()];case 1:return h=r.sent(),o&&l?[4,Zf.getManager(u).removeModel(c)]:[3,3];case 2:r.sent(),r.label=3;case 3:return[4,s.save(h)];case 4:return f=r.sent(),!o||l?[3,6]:[4,Zf.getManager(u).removeModel(c)];case 5:r.sent(),r.label=6;case 6:return[2,f.modelArtifactsInfo]}}))}))}var nd="models_store",rd="model_info_store";function od(){if(!i().getBool("IS_BROWSER"))throw new Error("Failed to obtain IndexedDB factory because the current environmentis not a web browser.");var t=window||self,e=t.indexedDB||t.mozIndexedDB||t.webkitIndexedDB||t.msIndexedDB||t.shimIndexedDB;if(null==e)throw new Error("The current browser does not appear to support IndexedDB.");return e}function ad(t){var e=t.result;e.createObjectStore(nd,{keyPath:"modelPath"}),e.createObjectStore(rd,{keyPath:"modelPath"})}var id=function(){function t(t){if(this.indexedDB=od(),null==t||!t)throw new Error("For IndexedDB, modelPath must not be null, undefined or empty.");this.modelPath=t}return t.prototype.save=function(t){return n(this,void 0,void 0,(function(){return r(this,(function(e){if(t.modelTopology instanceof ArrayBuffer)throw new Error("BrowserLocalStorage.save() does not support saving model topology in binary formats yet.");return[2,this.databaseAction(this.modelPath,t)]}))}))},t.prototype.load=function(){return n(this,void 0,void 0,(function(){return r(this,(function(t){return[2,this.databaseAction(this.modelPath)]}))}))},t.prototype.databaseAction=function(t,e){var n=this;return new Promise((function(t,r){var o=n.indexedDB.open("tensorflowjs",1);o.onupgradeneeded=function(){return ad(o)},o.onsuccess=function(){var a=o.result;if(null==e){var i=a.transaction(nd,"readonly"),s=i.objectStore(nd).get(n.modelPath);s.onsuccess=function(){if(null==s.result)return a.close(),r(new Error("Cannot find model with path '"+n.modelPath+"' in IndexedDB."));t(s.result.modelArtifacts)},s.onerror=function(t){return a.close(),r(s.error)},i.oncomplete=function(){return a.close()}}else{var u,c=$f(e),l=a.transaction(rd,"readwrite"),h=l.objectStore(rd),f=h.put({modelPath:n.modelPath,modelArtifactsInfo:c});f.onsuccess=function(){var o=(u=a.transaction(nd,"readwrite")).objectStore(nd).put({modelPath:n.modelPath,modelArtifacts:e,modelArtifactsInfo:c});o.onsuccess=function(){return t({modelArtifactsInfo:c})},o.onerror=function(t){var e=(h=l.objectStore(rd)).delete(n.modelPath);e.onsuccess=function(){return a.close(),r(o.error)},e.onerror=function(t){return a.close(),r(o.error)}}},f.onerror=function(t){return a.close(),r(f.error)},l.oncomplete=function(){null==u?a.close():u.oncomplete=function(){return a.close()}}}},o.onerror=function(t){return r(o.error)}}))},t.URL_SCHEME="indexeddb://",t}(),sd=function(t){return i().getBool("IS_BROWSER")&&!Array.isArray(t)&&t.startsWith(id.URL_SCHEME)?(e=t.slice(id.URL_SCHEME.length),new id(e)):null;var e};Qf.registerSaveRouter(sd),Qf.registerLoadRouter(sd);var ud=function(){function t(){this.indexedDB=od()}return t.prototype.listModels=function(){return n(this,void 0,void 0,(function(){var t=this;return r(this,(function(e){return[2,new Promise((function(e,n){var r=t.indexedDB.open("tensorflowjs",1);r.onupgradeneeded=function(){return ad(r)},r.onsuccess=function(){var t=r.result,o=t.transaction(rd,"readonly"),a=o.objectStore(rd).getAll();a.onsuccess=function(){for(var t={},n=0,r=a.result;n0,(function(){return"promises must be a none empty array"}))}(t),function(t,e){C(t>=0&&t<=1,(function(){return"Progress fraction must be in range [0, 1], but got startFraction "+t})),C(e>=0&&e<=1,(function(){return"Progress fraction must be in range [0, 1], but got endFraction "+e})),C(e>=t,(function(){return"startFraction must be no more than endFraction, but got startFraction "+t+" and endFraction "+e}))}(n=null==n?0:n,r=null==r?1:r);var o=0;return Promise.all(t.map((function(a){return a.then((function(a){var i=n+ ++o/t.length*(r-n);return e(i),a})),a})))}function Ad(t,e){return n(this,void 0,void 0,(function(){var n,o,a,s,u,c,l,h,f;return r(this,(function(r){switch(r.label){case 0:return null==e&&(e={}),n=null==e.fetchFunc?i().platform.fetch:e.fetchFunc,o=t.map((function(t){return n(t,e.requestInit,{isBinary:!0})})),a=0,s=.5,null!=e.onProgress?[3,2]:[4,Promise.all(o)];case 1:return u=r.sent(),[3,4];case 2:return[4,Sd(o,e.onProgress,a,s)];case 3:u=r.sent(),r.label=4;case 4:return c=u.map((function(t){return t.arrayBuffer()})),l=.5,h=1,null!=e.onProgress?[3,6]:[4,Promise.all(c)];case 5:return f=r.sent(),[3,8];case 6:return[4,Sd(c,e.onProgress,l,h)];case 7:f=r.sent(),r.label=8;case 8:return[2,f]}}))}))}function Td(t){var e=this;return function(o,a,i){return void 0===a&&(a=""),n(e,void 0,void 0,(function(){var e,n,s,u,c,l,h,f,d,p;return r(this,(function(r){switch(r.label){case 0:if(e=o.map((function(){return!1})),n={},s=null!=i?i.map((function(){return!1})):[],u=[],o.forEach((function(t,r){var o=0;t.weights.forEach((function(t){var a="quantization"in t?t.quantization.dtype:t.dtype,c=zf[a]*k(t.shape),l=function(){e[r]=!0,null==n[r]&&(n[r]=[]),n[r].push({manifestEntry:t,groupOffset:o,sizeBytes:c})};null!=i?i.forEach((function(e,n){e===t.name&&(l(),s[n]=!0)})):l(),u.push(t.name),o+=c}))})),!s.every((function(t){return t})))throw c=i.filter((function(t,e){return!s[e]})),new Error("Could not find weights in manifest with names: "+c.join(", ")+". \nManifest JSON has weights with names: "+u.join(", ")+".");return l=e.reduce((function(t,e,n){return e&&t.push(n),t}),[]),h=[],l.forEach((function(t){o[t].paths.forEach((function(t){var e=a+(a.endsWith("/")?"":"/")+t;h.push(e)}))})),[4,t(h)];case 1:return f=r.sent(),d={},p=0,l.forEach((function(t){for(var e=o[t].paths.length,r=0,a=0;a0,(function(){return"URL path for http must not be null, undefined or empty."})),Array.isArray(t)&&C(2===t.length,(function(){return"URL paths for http must have a length of 2, (actual length is "+t.length+")."})),this.path=t,null!=e.requestInit&&null!=e.requestInit.body)throw new Error("requestInit is expected to have no pre-existing body, but has one.");this.requestInit=e.requestInit||{}}return t.prototype.save=function(t){return n(this,void 0,void 0,(function(){var e,n,o,a;return r(this,(function(r){switch(r.label){case 0:if(t.modelTopology instanceof ArrayBuffer)throw new Error("BrowserHTTPRequest.save() does not support saving model topology in binary formats yet.");return(e=Object.assign({method:this.DEFAULT_METHOD},this.requestInit)).body=new FormData,n=[{paths:["./model.weights.bin"],weights:t.weightSpecs}],o={modelTopology:t.modelTopology,format:t.format,generatedBy:t.generatedBy,convertedBy:t.convertedBy,userDefinedMetadata:t.userDefinedMetadata,weightsManifest:n},e.body.append("model.json",new Blob([JSON.stringify(o)],{type:"application/json"}),"model.json"),null!=t.weightData&&e.body.append("model.weights.bin",new Blob([t.weightData],{type:"application/octet-stream"}),"model.weights.bin"),[4,this.fetch(this.path,e)];case 1:if((a=r.sent()).ok)return[2,{modelArtifactsInfo:$f(t),responses:[a]}];throw new Error("BrowserHTTPRequest.save() failed due to HTTP response status "+a.status+".")}}))}))},t.prototype.load=function(){return n(this,void 0,void 0,(function(){var t,e,n,o,a,i,s,u,c,l,h,f;return r(this,(function(r){switch(r.label){case 0:return[4,this.fetch(this.path,this.requestInit)];case 1:if(!(t=r.sent()).ok)throw new Error("Request to "+this.path+" failed with status code "+t.status+". Please verify this URL points to the model JSON of the model to load.");r.label=2;case 2:return r.trys.push([2,4,,5]),[4,t.json()];case 3:return e=r.sent(),[3,5];case 4:throw r.sent(),n="Failed to parse model JSON of response from "+this.path+".",this.path.endsWith(".pb")?n+=" Your path contains a .pb file extension. Support for .pb models have been removed in TensorFlow.js 1.0 in favor of .json models. You can re-convert your Python TensorFlow model using the TensorFlow.js 1.0 conversion scripts or you can convert your.pb models with the 'pb2json'NPM script in the tensorflow/tfjs-converter repository.":n+=" Please make sure the server is serving valid JSON for this request.",new Error(n);case 5:if(o=e.modelTopology,a=e.weightsManifest,i=e.generatedBy,s=e.convertedBy,u=e.format,c=e.userDefinedMetadata,null==o&&null==a)throw new Error("The JSON from HTTP path "+this.path+" contains neither model topology or manifest for weights.");return null==a?[3,7]:[4,this.loadWeights(a)];case 6:f=r.sent(),l=f[0],h=f[1],r.label=7;case 7:return[2,{modelTopology:o,weightSpecs:l,weightData:h,userDefinedMetadata:c,generatedBy:i,convertedBy:s,format:u}]}}))}))},t.prototype.loadWeights=function(t){return n(this,void 0,void 0,(function(){var e,n,o,a,i,s,u,c,l,h,f;return r(this,(function(r){switch(r.label){case 0:for(e=Array.isArray(this.path)?this.path[1]:this.path,n=function(t){var e=t.lastIndexOf("/"),n=t.lastIndexOf("?"),r=t.substring(0,e),o=n>e?t.substring(n):"";return[r+"/",o]}(e),o=n[0],a=n[1],i=this.weightPathPrefix||o,s=[],u=0,c=t;u0&&Number.isInteger(n),(function(){return"If provided, numClasses must be a positive integer, but got "+n})),C(1===r.rank,(function(){return"Expected the rank of labels to be 1, but got "+r.rank})),C(1===o.rank,(function(){return"Expected the rank of predictions to be 1, but got "+o.rank})),C(r.shape[0]===o.shape[0],(function(){return"Mismatch in the number of examples: "+r.shape[0]+" vs. "+o.shape[0]+". Labels and predictions should have the same number of elements."})),C(n>0&&Number.isInteger(n),(function(){return"numClasses is required to be a positive integer, but got "+n}));var a=Rc(r.asType("int32"),n),i=Rc(o.asType("int32"),n);return a.transpose().matMul(i).asType("int32")}}),Wd=Object.freeze({confusionMatrix:Ld});var Ud=An({fromPixels_:function(t,e){if(void 0===e&&(e=3),e>4)throw new Error("Cannot construct Tensor with more than 4 channels from pixels.");if(null==t)throw new Error("pixels passed to tf.browser.fromPixels() can not be null");var n=!1,r=!1,o=!1,a=!1,i=!1;if(t.data instanceof Uint8Array)n=!0;else if("undefined"!=typeof ImageData&&t instanceof ImageData)r=!0;else if("undefined"!=typeof HTMLVideoElement&&t instanceof HTMLVideoElement)o=!0;else if("undefined"!=typeof HTMLImageElement&&t instanceof HTMLImageElement)a=!0;else{if(null==t.getContext)throw new Error("pixels passed to tf.browser.fromPixels() must be either an HTMLVideoElement, HTMLImageElement, HTMLCanvasElement, ImageData in browser, or OffscreenCanvas, ImageData in webworker or {data: Uint32Array, width: number, height: number}, but was "+t.constructor.name);i=!0}if(o){if(o&&t.readyState<2)throw new Error("The video element has not loaded data yet. Please wait for `loadeddata` event on the