src/operator/numpy/np_where_backward_op.cc

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

/*!
 * \file np_where_backward_op.cc
 * \brief CPU Implementation of numpy operator where
 */

#include "np_where_op-inl.h"

namespace mxnet {
namespace op {

NNVM_REGISTER_OP(_backward_np_where)
    .set_num_inputs(2)
    .set_num_outputs(2)
    .set_attr<nnvm::TIsBackward>("TIsBackward", true)
    .set_attr<FCompute>("FCompute<cpu>", NumpyWhereOpBackward<cpu>)
    .set_attr<FResourceRequest>("FResourceRequest", [](const NodeAttrs& attrs) {
      return std::vector<ResourceRequest>{ResourceRequest::kTempSpace};
    });

NNVM_REGISTER_OP(_backward_np_where_lscalar)
    .set_num_inputs(2)
    .set_num_outputs(1)
    .set_attr<nnvm::TIsBackward>("TIsBackward", true)
    .set_attr<FCompute>("FCompute<cpu>", NumpyWhereScalarOpBackward<cpu, true>)
    .set_attr<FResourceRequest>("FResourceRequest", [](const NodeAttrs& attrs) {
      return std::vector<ResourceRequest>{ResourceRequest::kTempSpace};
    });

NNVM_REGISTER_OP(_backward_np_where_rscalar)
    .set_num_inputs(2)
    .set_num_outputs(1)
    .set_attr<nnvm::TIsBackward>("TIsBackward", true)
    .set_attr<FCompute>("FCompute<cpu>", NumpyWhereScalarOpBackward<cpu, false>)
    .set_attr<FResourceRequest>("FResourceRequest", [](const NodeAttrs& attrs) {
      return std::vector<ResourceRequest>{ResourceRequest::kTempSpace};
    });

}  // namespace op
}  // namespace mxnet