/**
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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 { Cosh } from '../kernel_names';
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import { cast } from '../ops/cast';
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import { mul } from '../ops/mul';
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import { sinh } from '../ops/sinh';
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export const coshGradConfig = {
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kernelName: Cosh,
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inputsToSave: ['x'],
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gradFunc: (dy, saved) => {
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const [x] = saved;
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return { x: () => mul(sinh(cast(x, 'float32')), dy) };
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}
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};
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