wehub-resource-sync
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
//
|
|
// ScaleGrad.cpp
|
|
// MNN
|
|
//
|
|
// Created by MNN on 2022/08/11.
|
|
// Copyright © 2018, Alibaba Group Holding Limited
|
|
//
|
|
|
|
#include "OpGrad.hpp"
|
|
#include "core/Macro.h"
|
|
using namespace std;
|
|
namespace MNN {
|
|
using namespace MNN::Express;
|
|
|
|
class ScaleGrad : public OpGrad {
|
|
public:
|
|
virtual std::vector<Express::VARP> onGrad(Express::EXPRP expr,
|
|
const std::vector<Express::VARP>& backwardOutput) override {
|
|
auto inputs = expr->inputs();
|
|
std::vector<VARP> res(inputs.size(), nullptr);
|
|
auto outputDiff = backwardOutput[0];
|
|
|
|
std::unique_ptr<OpT> forwardOp(expr->get()->UnPack());
|
|
auto param = forwardOp->main.AsScale();
|
|
auto channels = param->channels;
|
|
auto scale = param->scaleData;
|
|
auto zeros = std::vector<float>(scale.size(), 0.0f);
|
|
|
|
res[0] = _Scale(outputDiff, channels, std::move(scale), std::move(zeros));
|
|
|
|
return res;
|
|
}
|
|
};
|
|
|
|
static void _create() {
|
|
static ScaleGrad _c;
|
|
OpGrad::insert(OpType_Scale, &_c);
|
|
|
|
}
|
|
|
|
REGISTER_GRAD(ScaleGrad_cpp, _create);
|
|
};
|
|
|