💿🐜 Antkeeper source code
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122 lines
2.9 KiB
122 lines
2.9 KiB
/*
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* Copyright (C) 2023 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_MATH_NUMBERS_HPP
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#define ANTKEEPER_MATH_NUMBERS_HPP
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#include <limits>
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#include <numbers>
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namespace math {
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/// Mathematical constants.
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namespace numbers {
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/// Positive infinity.
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template <class T>
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inline constexpr T inf = std::numeric_limits<T>::infinity();
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/// e.
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template <class T>
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inline constexpr T e = std::numbers::e_v<T>;
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/// log2(e).
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template <class T>
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inline constexpr T log2_e = std::numbers::log2e_v<T>;
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/// log10(e).
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template <class T>
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inline constexpr T log10_e = std::numbers::log10e_v<T>;
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/// Pi.
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template <class T>
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inline constexpr T pi = std::numbers::pi_v<T>;
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/// Pi * 2.
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template <class T>
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inline constexpr T two_pi = pi<T> * T{2};
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/// Pi * 4.
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template <class T>
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inline constexpr T four_pi = pi<T> * T{4};
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/// Pi / 2.
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template <class T>
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inline constexpr T half_pi = pi<T> / T{2};
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/// 1 / Pi.
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template <class T>
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inline constexpr T inv_pi = std::numbers::inv_pi_v<T>;
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/// 1 / sqrt(Pi).
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template <class T>
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inline constexpr T inv_sqrt_pi = std::numbers::inv_sqrtpi_v<T>;
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/// ln(2).
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template <class T>
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inline constexpr T ln_2 = std::numbers::ln2_v<T>;
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/// ln(10).
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template <class T>
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inline constexpr T ln_10 = std::numbers::ln10_v<T>;
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/// sqrt(0.5)
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template <class T>
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inline constexpr T sqrt_half = T{0.70710678118654752440084436210485};
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/// sqrt(2)
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template <class T>
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inline constexpr T sqrt_2 = std::numbers::sqrt2_v<T>;
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/// sqrt(3)
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template <class T>
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inline constexpr T sqrt_3 = std::numbers::sqrt3_v<T>;
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/// 1 / sqrt(3)
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template <class T>
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inline constexpr T inv_sqrt_3 = std::numbers::inv_sqrt3_v<T>;
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/// sqrt(5)
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template <class T>
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inline constexpr T sqrt_5 = T{2.2360679774997896964091736687313};
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/// Euler–Mascheroni constant.
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template <class T>
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inline constexpr T egamma = std::numbers::egamma_v<T>;
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/// Golden ratio constant.
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template <class T>
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inline constexpr T phi = std::numbers::phi_v<T>;
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/// Degrees-to-radians conversion factor.
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template <class T>
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inline constexpr T deg2rad = pi<T> / T{180};
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/// Radians-to-degrees conversion factor.
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template <class T>
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inline constexpr T rad2deg = T{180} / pi<T>;
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} // namespace numbers
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// Bring math::numbers into math namespace
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using namespace numbers;
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} // namespace math
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#endif // ANTKEEPER_MATH_NUMBERS_HPP
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