| // (C) Copyright Matt Borland 2021. | |
| // Use, modification and distribution are subject to the | |
| // Boost Software License, Version 1.0. (See accompanying file | |
| // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
| // | |
| // Constepxr implementation of fabs (see c.math.abs secion 26.8.2 of the ISO standard) | |
| #ifndef BOOST_MATH_CCMATH_FABS | |
| #define BOOST_MATH_CCMATH_FABS | |
| #include <boost/math/ccmath/detail/config.hpp> | |
| #ifdef BOOST_MATH_NO_CCMATH | |
| #error "The header <boost/math/fabs.hpp> can only be used in C++17 and later." | |
| #endif | |
| #include <boost/math/ccmath/abs.hpp> | |
| namespace boost::math::ccmath { | |
| template <typename T> | |
| inline constexpr auto fabs(T x) noexcept | |
| { | |
| return boost::math::ccmath::abs(x); | |
| } | |
| inline constexpr float fabsf(float x) noexcept | |
| { | |
| return boost::math::ccmath::abs(x); | |
| } | |
| #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS | |
| inline constexpr long double fabsl(long double x) noexcept | |
| { | |
| return boost::math::ccmath::abs(x); | |
| } | |
| #endif | |
| } | |
| #endif // BOOST_MATH_CCMATH_FABS |