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/*
* Copyright (c) 2019 Samsung Electronics Co., Ltd. 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 "ReLU.h"
#include "Common.h"
#include "mir/ShapeRange.h"
#include "mir/Tensor.h"
#include <cmath>
namespace mir_interpreter
{
template <typename T> struct ELUImpl
{
static void run(const mir::TensorVariant &arg, float alpha, mir::TensorVariant &result);
};
template <typename T>
void ELUImpl<T>::run(const mir::TensorVariant &arg, float alpha, mir::TensorVariant &result)
{
mir::Tensor<T> arg_accessor(arg);
mir::Tensor<T> res_accessor(result);
for (const auto &index : mir::ShapeRange(result.getShape()))
{
const T x = arg_accessor.at(index);
res_accessor.at(index) = x < 0 ? alpha * (std::exp(x) - 1) : x;
}
}
void ELU(const mir::TensorVariant &arg, float alpha, mir::TensorVariant &result)
{
dispatch<ELUImpl>(result.getElementType(), arg, alpha, result);
}
} // namespace mir_interpreter
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