52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
/// @file grotto/gadgets/activations/elu.hpp
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/// @author Ryan Henry <ryan.henry@ucalgary.ca>
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/// @brief Cleartext reference for `elu`.
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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 license) for details.
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#ifndef LIBDPF_INCLUDE_GROTTO_GADGETS_ACTIVATIONS_ELU_HPP__
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#define LIBDPF_INCLUDE_GROTTO_GADGETS_ACTIVATIONS_ELU_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 elu_default_alpha = 1;
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template <double const & alpha = elu_default_alpha>
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struct elu
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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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if (x <= 0) return alpha * std::expm1(x);
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if (x > 0) return std::min(x, std::numeric_limits<T>::max());
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}
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};
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template <double const & alpha>
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struct gadget_hints<elu<alpha>>
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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_ELU_HPP__
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