You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.3 KiB
72 lines
2.3 KiB
/* Copyright (c) 2016 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. */
|
|
|
|
#include "paddle/fluid/operators/sign_op.h"
|
|
|
|
namespace paddle {
|
|
namespace operators {
|
|
|
|
class SignOp : public framework::OperatorWithKernel {
|
|
public:
|
|
using framework::OperatorWithKernel::OperatorWithKernel;
|
|
|
|
void InferShape(framework::InferShapeContext *ctx) const override {
|
|
PADDLE_ENFORCE(ctx->HasInput("X"),
|
|
"Input(X) of SignOp should not be null.");
|
|
PADDLE_ENFORCE(ctx->HasOutput("Out"),
|
|
"Output(Out) of SignOp should not be null.");
|
|
ctx->SetOutputDim("Out", ctx->GetInputDim("X"));
|
|
ctx->ShareLoD("X", /*->*/ "Out");
|
|
}
|
|
};
|
|
|
|
template <typename AttrType>
|
|
class SignOpMaker : public framework::OpProtoAndCheckerMaker {
|
|
public:
|
|
SignOpMaker(OpProto *proto, OpAttrChecker *op_checker)
|
|
: OpProtoAndCheckerMaker(proto, op_checker) {
|
|
AddInput("X", "(Tensor) Input tensor of sign operator.");
|
|
AddOutput("Out", "(Tensor) Output tensor of sign operator.");
|
|
AddComment(R"DOC(
|
|
Sign operator
|
|
|
|
$$Out = X.sign()$$
|
|
)DOC");
|
|
}
|
|
};
|
|
|
|
class SignGradMaker : public framework::SingleGradOpDescMaker {
|
|
public:
|
|
using framework::SingleGradOpDescMaker::SingleGradOpDescMaker;
|
|
|
|
std::unique_ptr<framework::OpDesc> Apply() const override {
|
|
auto *grad_op = new framework::OpDesc();
|
|
grad_op->SetType("scale");
|
|
grad_op->SetInput("X", OutputGrad("Out"));
|
|
grad_op->SetOutput("Out", InputGrad("X"));
|
|
grad_op->SetAttr("scale", 0.0f);
|
|
return std::unique_ptr<framework::OpDesc>(grad_op);
|
|
}
|
|
};
|
|
|
|
} // namespace operators
|
|
} // namespace paddle
|
|
|
|
namespace ops = paddle::operators;
|
|
|
|
REGISTER_OPERATOR(sign, ops::SignOp, ops::SignOpMaker<float>,
|
|
ops::SignGradMaker);
|
|
REGISTER_OP_CPU_KERNEL(
|
|
sign, ops::SignKernel<paddle::platform::CPUDeviceContext, float>);
|