wehub-resource-sync
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
/* Copyright (c) 2022 PaddlePaddle Authors. 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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http://www.apache.org/licenses/LICENSE-2.0
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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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#pragma once
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#include "paddle/phi/core/dense_tensor.h"
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namespace phi {
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/**
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* @brief Erf Kernel.
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* The equation is:
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* $$
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* f(x) = \frac{2}{\sqrt{\pi}} \int_{0}^{x}e^{- \eta^{2}}d\eta
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* $$
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*
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* The input `x` can carry the LoD (Level of Details) information,
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* or not. And the output shares the LoD information with input `x`.
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* @param ctx device context
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* @param x The input tensor of erf kernel
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* @param out The output tensor of erf kernel
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*/
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template <typename T, typename Context>
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void ErfKernel(const Context& dev_ctx, const DenseTensor& x, DenseTensor* out);
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} // namespace phi
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