caffe2/operators/zero_gradient_op.cc

/**
 * Copyright (c) 2016-present, Facebook, Inc.
 *
 * 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 "caffe2/operators/zero_gradient_op.h"

namespace caffe2 {

REGISTER_CPU_OPERATOR(ZeroGradient, ZeroGradientOp<CPUContext>);
OPERATOR_SCHEMA(ZeroGradient).NumInputs(1).NumOutputs(0).SetDoc(R"DOC(
            ZeroGradient operators doesn't produce any output blobs. One can use
            this operator to produce 0 gradient for the input blob.
            )DOC");

struct GetZeroGradientOpGradient : public GradientMakerBase {
  using GradientMakerBase::GradientMakerBase;
  std::vector<OperatorDef> GetGradientDefs() override {
    return SingleGradientDef(
        "ConstantFill",
        "",
        vector<string>{I(0)},
        vector<string>{GI(0)},
        vector<Argument>{MakeArgument<float>("value", 0.0)});
  }
};

REGISTER_GRADIENT(ZeroGradient, GetZeroGradientOpGradient);

} // namespace caffe2