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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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___MATH_COPYSIGN_H10#define _LIBCPP___MATH_COPYSIGN_H11 12#include <__config>13#include <__type_traits/enable_if.h>14#include <__type_traits/is_arithmetic.h>15#include <__type_traits/promote.h>16 17#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)18# pragma GCC system_header19#endif20 21_LIBCPP_BEGIN_NAMESPACE_STD22 23namespace __math {24 25// copysign26 27[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float copysign(float __x, float __y) _NOEXCEPT {28 return ::__builtin_copysignf(__x, __y);29}30 31[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double copysign(long double __x, long double __y) _NOEXCEPT {32 return ::__builtin_copysignl(__x, __y);33}34 35template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>36[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI __promote_t<_A1, _A2> copysign(_A1 __x, _A2 __y) _NOEXCEPT {37 return ::__builtin_copysign(__x, __y);38}39 40} // namespace __math41 42_LIBCPP_END_NAMESPACE_STD43 44#endif // _LIBCPP___MATH_COPYSIGN_H45