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