| // (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 |
