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
23 namespace __math {
24
25 // copysign
26
copysign(float __x,float __y)27 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float copysign(float __x, float __y) _NOEXCEPT {
28 return ::__builtin_copysignf(__x, __y);
29 }
30
copysign(long double __x,long double __y)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
35 template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>
copysign(_A1 __x,_A2 __y)36 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type 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