unary_kernel.h

// 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/core/dense_tensor.h"
#include "paddle/phi/core/sparse_coo_tensor.h"
#include "paddle/phi/core/sparse_csr_tensor.h"
#include "paddle/phi/kernels/activation_kernel.h"
#include "paddle/phi/kernels/empty_kernel.h"

#define DECLARE_SPARSE_UNARY_KERNEL(name)                                      \
  template <typename T, typename Context>                                      \
  void SparseCoo##name##Kernel(                                                \
      const Context& dev_ctx, const SparseCooTensor& x, SparseCooTensor* out); \
                                                                               \
  template <typename T, typename Context>                                      \
  void SparseCsr##name##Kernel(                                                \
      const Context& dev_ctx, const SparseCsrTensor& x, SparseCsrTensor* out);

namespace phi {
namespace sparse {

DECLARE_SPARSE_UNARY_KERNEL(Relu)
DECLARE_SPARSE_UNARY_KERNEL(Sqrt)
DECLARE_SPARSE_UNARY_KERNEL(Sin)

template <typename T, typename Context>
SparseCooTensor SparseRelu(const Context& dev_ctx, const SparseCooTensor& x) {
  DenseTensor indices, values;
  SparseCooTensor coo(indices, values, x.dims());
  SparseCooReluKernel<T, Context>(dev_ctx, x, &coo);
  return coo;
}

}  // namespace sparse
}  // namespace phi