47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
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/// @file grotto/gadgets/exponential/exp2.hpp
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/// @author Ryan Henry <ryan.henry@ucalgary.ca>
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/// @brief gadgetized form of `std::exp2`
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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_EXPONENTIAL_EXP2_HPP__
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#define LIBDPF_INCLUDE_GROTTO_GADGETS_EXPONENTIAL_EXP2_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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struct exp2
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{
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template <typename T>
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T operator()(T x) { return std::min(std::exp2(static_cast<double>(x)), std::numeric_limits<T>::max()); }
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};
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template <>
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struct gadget_hints<exp2>
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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 = nullptr;
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static constexpr double * interesting_points = nullptr;
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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 = nullptr;
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static constexpr std::array<double, degree+1> * canonical_polys = nullptr;
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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_EXPONENTIAL_EXP2_HPP__
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