/**
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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 { Round } from '@tensorflow/tfjs-core';
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import { unaryKernelFunc } from '../kernel_utils/kernel_funcs_utils';
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const ROUND = `
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// OpenGL ES does not support round function.
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// The algorithm is based on banker's rounding.
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float base = floor(x);
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if ((x - base) < 0.5) {
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return floor(x);
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} else if ((x - base) > 0.5) {
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return ceil(x);
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} else {
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if (mod(base, 2.0) == 0.0) {
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return base;
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} else {
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return base + 1.0;
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}
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}
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`;
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export const round = unaryKernelFunc({ opSnippet: ROUND });
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export const roundConfig = {
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kernelName: Round,
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backendName: 'webgl',
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kernelFunc: round,
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};
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