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