MNN/source/backend/cpu/CPUSigmoid.cpp

40 lines
1.2 KiB
C++

//
// CPUSigmoid.cpp
// MNN
//
// Created by MNN on 2018/08/09.
// Copyright © 2018, Alibaba Group Holding Limited
//
#include "backend/cpu/CPUSigmoid.hpp"
#include <math.h>
#include "backend/cpu/CPUBackend.hpp"
#include "backend/cpu/compute/CommonOptFunction.h"
#include "core/Macro.h"
namespace MNN {
ErrorCode CPUSigmoid::onExecute(const std::vector<Tensor*>& inputs, const std::vector<Tensor*>& outputs) {
MNN_ASSERT(1 == inputs.size());
MNN_ASSERT(1 == outputs.size());
auto inputData = inputs[0]->host<float>();
auto outputData = outputs[0]->host<float>();
const int dataSize = outputs[0]->elementSize();
MNNExp(outputData, inputData, dataSize);
for (int i = 0; i < dataSize; ++i) {
outputData[i] = 1.0f / (1.0f + outputData[i]);
}
return NO_ERROR;
}
class CPUSigmoidCreator : public CPUBackend::Creator {
public:
virtual Execution* onCreate(const std::vector<Tensor*>& inputs, const std::vector<Tensor*>& outputs,
const MNN::Op* op, Backend* backend) const {
return new CPUSigmoid(backend);
}
};
REGISTER_CPU_OP_CREATOR(CPUSigmoidCreator, OpType_Sigmoid);
} // namespace MNN