src/operator/tensor/broadcast_reduce_minmax_value.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 broadcast_reduce_minmax_value.cc
 * \brief CPU Implementation of broadcast and reduce min and max functions based on value.
 */
#include "./broadcast_reduce_op.h"

namespace mxnet {
namespace op {

MXNET_OPERATOR_REGISTER_MINMAX_REDUCE(max)
    .add_alias("max_axis")
    .describe(get_reduce_axes_description("max", __LINE__))
    .set_attr<FCompute>("FCompute<cpu>", ReduceAxesCompute<cpu, mshadow::red::maximum>)
    .set_attr<FResourceRequest>("FResourceRequest",
                                [](const NodeAttrs& attrs) {
                                  return std::vector<ResourceRequest>{ResourceRequest::kTempSpace};
                                })
    .set_attr<THasDeterministicOutput>("THasDeterministicOutput", true)
    .set_attr<nnvm::FGradient>("FGradient", ReduceGrad{"_backward_max"});

MXNET_OPERATOR_REGISTER_REDUCE_BACKWARD(_backward_max)
    .set_num_inputs(3)
    .set_attr<FCompute>("FCompute<cpu>", ReduceAxesBackwardUseInOut<cpu, mshadow_op::eq>);

MXNET_OPERATOR_REGISTER_MINMAX_REDUCE(min)
    .add_alias("min_axis")
    .describe(get_reduce_axes_description("min", __LINE__))
    .set_attr<FCompute>("FCompute<cpu>", ReduceAxesCompute<cpu, mshadow::red::minimum>)
    .set_attr<FResourceRequest>("FResourceRequest",
                                [](const NodeAttrs& attrs) {
                                  return std::vector<ResourceRequest>{ResourceRequest::kTempSpace};
                                })
    .set_attr<THasDeterministicOutput>("THasDeterministicOutput", true)
    .set_attr<nnvm::FGradient>("FGradient", ReduceGrad{"_backward_min"});

MXNET_OPERATOR_REGISTER_REDUCE_BACKWARD(_backward_min)
    .set_num_inputs(3)
    .set_attr<FCompute>("FCompute<cpu>", ReduceAxesBackwardUseInOut<cpu, mshadow_op::eq>);

}  // namespace op
}  // namespace mxnet