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
17#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18# pragma GCC system_header
19#endif
20
21_LIBCPP_BEGIN_NAMESPACE_STD
22
23namespace __math {
24
25// copysign
26
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 __math
41
42_LIBCPP_END_NAMESPACE_STD
43
44#endif // _LIBCPP___MATH_COPYSIGN_H
45