/**
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* @license
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* Copyright 2020 Google LLC. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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import { Relu } from '@tensorflow/tfjs-core';
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import { unaryKernelFunc } from '../kernel_utils/kernel_funcs_utils';
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import { CHECK_NAN_SNIPPET } from '../unaryop_gpu';
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const RELU = CHECK_NAN_SNIPPET + `
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return (x < 0.0) ? 0.0 : x;
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`;
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const RELU_PACKED = `
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vec4 result = x * vec4(greaterThanEqual(x, vec4(0.0)));
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bvec4 isNaN = isnan(x);
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result.r = isNaN.r ? x.r : result.r;
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result.g = isNaN.g ? x.g : result.g;
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result.b = isNaN.b ? x.b : result.b;
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result.a = isNaN.a ? x.a : result.a;
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return result;
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`;
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export const relu = unaryKernelFunc({ opSnippet: RELU, packedOpSnippet: RELU_PACKED });
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export const reluConfig = {
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kernelName: Relu,
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backendName: 'webgl',
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kernelFunc: relu
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};
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