💿🐜 Antkeeper source code
https://antkeeper.com
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69 lines
1.7 KiB
69 lines
1.7 KiB
/*
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* Copyright (C) 2021 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_CONSTANTS_HPP
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#define ANTKEEPER_MATH_CONSTANTS_HPP
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#include <limits>
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namespace math {
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/// Positive infinity.
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template <class T>
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constexpr T inf{std::numeric_limits<T>::infinity()};
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/// Pi.
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template <class T>
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constexpr T pi = T{3.1415926535897932384626433832795};
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/// Pi * 2.
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template <class T>
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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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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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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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constexpr T inverse_pi = T{1} / pi<T>;
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/// sqrt(0.5)
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template <class T>
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constexpr T sqrt_half = T{0.70710678118654752440084436210485};
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/// sqrt(2)
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template <class T>
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constexpr T sqrt_2 = T{1.4142135623730950488016887242097};
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/// sqrt(3)
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template <class T>
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constexpr T sqrt_3 = T{1.7320508075688772935274463415059};
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/// sqrt(5)
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template <class T>
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constexpr T sqrt_5 = T{2.2360679774997896964091736687313};
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} // namespace math
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#endif // ANTKEEPER_MATH_CONSTANTS_HPP
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