50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
/// @file grotto/gadgets/hyperbolic/atanh.hpp
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/// @author Ryan Henry <ryan.henry@ucalgary.ca>
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/// @brief Cleartext reference for `atanh`.
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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_HYPERBOLIC_ATANH_HPP__
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#define LIBDPF_INCLUDE_GROTTO_GADGETS_HYPERBOLIC_ATANH_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 atanh
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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 (std::abs(x) >= 1) return 0;
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return std::atanh(static_cast<double>(x));
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}
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};
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template <>
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struct gadget_hints<atanh>
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{
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static constexpr double min = -1;
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static constexpr double max = 1;
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static constexpr double poles[] = { -1, 1 };
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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_HYPERBOLIC_ATANH_HPP__
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