pytorch/caffe2/operators/rsqrt_op.cc
Nikita Shulga 3a66a1cb99 [clang-tidy] Exclude cppcoreguidelines-avoid-magic-numbers (#57841)
Summary:
Add cppcoreguidelines-avoid-magic-numbers exclusion to clang-tidy
Remove existing nolint warnings using following script:
```
for file in `git ls-files | grep -v \.py`; do gsed '/^ *\/\/ NOLINTNEXTLINE(cppcoreguidelines-avoid-magic-numbers)/d' -i  $file; done
```

Pull Request resolved: https://github.com/pytorch/pytorch/pull/57841

Reviewed By: samestep

Differential Revision: D28295045

Pulled By: malfet

fbshipit-source-id: 7c6e8d1213c9593f169ed3df6a916498f1a97163
2021-05-07 20:02:33 -07:00

79 lines
2.1 KiB
C++

#include "caffe2/operators/rsqrt_op.h"
#include "caffe2/utils/eigen_utils.h"
#include <algorithm>
#include <functional>
#include <string>
namespace caffe2 {
template <>
template <typename T>
bool RsqrtGradientFunctor<CPUContext>::Forward(
const std::vector<int>& dY_dims,
const std::vector<int>& /* Y_dims */,
const T* dY,
const T* Y,
T* dX,
CPUContext* /* context */) const {
const int size = std::accumulate(
// NOLINTNEXTLINE(modernize-use-transparent-functors)
dY_dims.cbegin(), dY_dims.cend(), 1, std::multiplies<int>());
EigenVectorMap<T>(dX, size) = ConstEigenVectorMap<T>(dY, size).array() *
ConstEigenVectorMap<T>(Y, size).array().cube() * static_cast<T>(-0.5);
return true;
}
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
REGISTER_CPU_OPERATOR(
Rsqrt,
UnaryElementwiseOp<
TensorTypes<float>,
CPUContext,
RsqrtFunctor<CPUContext>>);
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
REGISTER_CPU_OPERATOR(
RsqrtGradient,
BinaryElementwiseOp<
TensorTypes<float>,
CPUContext,
RsqrtGradientFunctor<CPUContext>>);
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
OPERATOR_SCHEMA(Rsqrt)
.NumInputs(1)
.NumOutputs(1)
.AllowInplace({{0, 0}})
.IdenticalTypeAndShape()
.SetDoc("Computes the element-wise rsqrt of the input.")
.Input(0, "X", "ND input tensor")
.Output(0, "Y", "ND output tensor");
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
OPERATOR_SCHEMA(RsqrtGradient)
.NumInputs(2)
.NumOutputs(1)
.AllowInplace({{0, 0}});
namespace {
class GetRsqrtGradient final : public GradientMakerBase {
using GradientMakerBase::GradientMakerBase;
std::vector<OperatorDef> GetGradientDefs() override {
return SingleGradientDef(
"RsqrtGradient",
"",
std::vector<std::string>{GO(0), O(0)},
std::vector<std::string>{GI(0)});
}
};
} // namespace
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
REGISTER_GRADIENT(Rsqrt, GetRsqrtGradient);
} // namespace caffe2