54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
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/// @file grotto/gadgets/activations/selu.hpp
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/// @author Ryan Henry <ryan.henry@ucalgary.ca>
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/// @brief
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/// @copyright Copyright (c) 2019-2023 Ryan Henry and others
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/// @license Released under a GNU General Public v2.0 (GPLv2) license;
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/// see [LICENSE.md](@ref GPLv2) for details.
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#ifndef LIBDPF_INCLUDE_GROTTO_GADGETS_ACTIVATIONS_SELU_HPP__
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#define LIBDPF_INCLUDE_GROTTO_GADGETS_ACTIVATIONS_SELU_HPP__
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#include <cmath>
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#include <array>
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#include <limits>
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#include "grotto/gadget_hints.hpp"
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namespace grotto
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{
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namespace gadgets
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{
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static constexpr double selu_default_alpha = 1.6732632423543772848170429916717;
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static constexpr double selu_default_scale = 1.0507009873554804934193349852946;
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template <double const & alpha = selu_default_alpha,
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double const & scale = selu_default_scale>
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struct selu
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{
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template <typename T>
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T operator()(T x)
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{
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return scale*(std::max(0,x)+std::min(0,alpha*std::expm1(x)));
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}
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};
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template <double const & alpha, double const & scale>
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struct gadget_hints<selu<alpha, scale>>
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{
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static constexpr double min = std::numeric_limits<double>::min();
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static constexpr double max = std::numeric_limits<double>::max();
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static constexpr double poles[] = { };
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static constexpr double interesting_points[] = { };
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static constexpr unsigned degree = 3;
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static constexpr bool has_canonical_representation = false;
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static constexpr double canonical_bounds[] = { };
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static constexpr std::array<double, degree+1> canonical_polys[] = { };
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};
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} // namespace gadgets
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} // namespace grotto
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#endif // LIBDPF_INCLUDE_GROTTO_GADGETS_ACTIVATIONS_SELU_HPP__
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