1//===----------------------------------------------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#ifndef _LIBCPP___MATH_COPYSIGN_H 10#define _LIBCPP___MATH_COPYSIGN_H 11 12#include <__config> 13#include <__type_traits/enable_if.h> 14#include <__type_traits/is_arithmetic.h> 15#include <__type_traits/promote.h> 16#include <limits> 17 18#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 19# pragma GCC system_header 20#endif 21 22_LIBCPP_BEGIN_NAMESPACE_STD 23 24namespace __math { 25 26// copysign 27 28_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI float copysign(float __x, float __y) _NOEXCEPT { 29 return ::__builtin_copysignf(__x, __y); 30} 31 32_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI long double copysign(long double __x, long double __y) _NOEXCEPT { 33 return ::__builtin_copysignl(__x, __y); 34} 35 36template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0> 37_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type 38copysign(_A1 __x, _A2 __y) _NOEXCEPT { 39 return ::__builtin_copysign(__x, __y); 40} 41 42} // namespace __math 43 44_LIBCPP_END_NAMESPACE_STD 45 46#endif // _LIBCPP___MATH_COPYSIGN_H 47