wehub-resource-sync
48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
// Copyright (c) 2022 PaddlePaddle Authors. 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.
|
|
|
|
#pragma once
|
|
|
|
#include "paddle/phi/kernels/as_real_kernel.h"
|
|
|
|
#include "paddle/phi/core/dense_tensor.h"
|
|
#include "paddle/phi/core/tensor_utils.h"
|
|
#include "paddle/phi/kernels/funcs/for_range.h"
|
|
|
|
namespace phi {
|
|
|
|
/**
|
|
* @brief This operator is used to return an old-fashioned real tensor from a
|
|
* complex tensor. The size of the last dimension of the output tensor is 2,
|
|
* which corresponds to 'real' and 'complex', respectively.
|
|
*
|
|
* @param dev_ctx device context
|
|
* @param x the input tensor of as_real
|
|
* @param out the output tensor of as_real
|
|
*/
|
|
template <typename T, typename Context>
|
|
void AsRealKernel(const Context& dev_ctx,
|
|
const DenseTensor& x,
|
|
DenseTensor* out) {
|
|
dev_ctx.template Alloc<typename T::value_type>(out);
|
|
auto out_dims_original = out->dims();
|
|
Copy(dev_ctx, x, dev_ctx.GetPlace(), false, out);
|
|
out->Resize(out_dims_original); // restored the shape.
|
|
out->set_type(
|
|
CppTypeToDataType<typename T::value_type>::Type()); // restored the
|
|
// dtype.
|
|
}
|
|
|
|
} // namespace phi
|