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paddlepaddle--paddle/paddle/phi/kernels/stride/complex_kernel.cc
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2026-07-13 12:40:42 +08:00

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// Copyright (c) 2023 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.
#include "paddle/phi/kernels/complex_kernel.h"
#include "paddle/common/flags.h"
#include "paddle/phi/backends/all_context.h"
#include "paddle/phi/common/type_traits.h"
#include "paddle/phi/core/kernel_registry.h"
COMMON_DECLARE_bool(use_stride_kernel);
namespace phi {
template <typename T, typename Context>
void RealStridedKernel(const Context& dev_ctx,
const DenseTensor& x,
DenseTensor* out) {
if (out->numel() == 0) {
dev_ctx.template Alloc<phi::dtype::Real<T>>(out);
return;
}
if (!FLAGS_use_stride_kernel) {
PADDLE_THROW(common::errors::Fatal(
"FLAGS_use_stride_kernel is closed. Strided kernel "
"be called, something wrong has happened!"));
}
if (x.dtype() != DataType::COMPLEX64 && x.dtype() != DataType::COMPLEX128) {
PADDLE_THROW(
common::errors::NotFound("paddle.real only support COMPLEX64 and "
"COMPLEX128, but the input dtype is %s",
x.dtype()));
}
DDim stride = x.strides();
for (int i = 0; i < stride.size(); i++) {
stride[i] = x.strides()[i] * 2;
}
out->set_offset(x.offset());
out->set_strides(stride);
out->ResetHolder(x.Holder());
out->ShareInplaceVersionCounterWith(x);
}
template <typename T, typename Context>
void ImagStridedKernel(const Context& dev_ctx,
const DenseTensor& x,
DenseTensor* out) {
if (out->numel() == 0) {
dev_ctx.template Alloc<phi::dtype::Real<T>>(out);
return;
}
if (!FLAGS_use_stride_kernel) {
PADDLE_THROW(common::errors::Fatal(
"FLAGS_use_stride_kernel is closed. Strided kernel "
"be called, something wrong has happened!"));
}
if (x.dtype() != DataType::COMPLEX64 && x.dtype() != DataType::COMPLEX128) {
PADDLE_THROW(
common::errors::NotFound("paddle.imag only support COMPLEX64 and "
"COMPLEX128, but the input dtype is %s",
x.dtype()));
}
DDim stride = x.strides();
for (int i = 0; i < stride.size(); i++) {
stride[i] = x.strides()[i] * 2;
}
out->set_strides(stride);
out->set_offset(x.offset() + phi::SizeOf(out->dtype()));
out->ResetHolder(x.Holder());
out->ShareInplaceVersionCounterWith(x);
}
} // namespace phi
PD_REGISTER_KERNEL(real,
CPU,
STRIDED,
phi::RealStridedKernel,
phi::complex64,
phi::complex128) {
kernel->OutputAt(0).SetDataType(phi::dtype::ToReal(kernel_key.dtype()));
}
PD_REGISTER_KERNEL(imag,
CPU,
STRIDED,
phi::ImagStridedKernel,
phi::complex64,
phi::complex128) {
kernel->OutputAt(0).SetDataType(phi::dtype::ToReal(kernel_key.dtype()));
}
#if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
PD_REGISTER_KERNEL(real,
GPU,
STRIDED,
phi::RealStridedKernel,
phi::complex64,
phi::complex128) {
kernel->OutputAt(0).SetDataType(phi::dtype::ToReal(kernel_key.dtype()));
}
PD_REGISTER_KERNEL(imag,
GPU,
STRIDED,
phi::ImagStridedKernel,
phi::complex64,
phi::complex128) {
kernel->OutputAt(0).SetDataType(phi::dtype::ToReal(kernel_key.dtype()));
}
#endif
#if defined(PADDLE_WITH_CUSTOM_DEVICE) && !defined(PADDLE_WITH_CUDA)
PD_REGISTER_KERNEL(real,
Custom,
STRIDED,
phi::RealStridedKernel,
phi::complex64,
phi::complex128) {
kernel->OutputAt(0).SetDataType(phi::dtype::ToReal(kernel_key.dtype()));
}
PD_REGISTER_KERNEL(imag,
Custom,
STRIDED,
phi::ImagStridedKernel,
phi::complex64,
phi::complex128) {
kernel->OutputAt(0).SetDataType(phi::dtype::ToReal(kernel_key.dtype()));
}
#endif