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_ABS_H
10#define _LIBCPP___MATH_ABS_H
11
12#include <__config>
13#include <__type_traits/enable_if.h>
14#include <__type_traits/is_integral.h>
15
16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17# pragma GCC system_header
18#endif
19
20_LIBCPP_BEGIN_NAMESPACE_STD
21
22namespace __math {
23
24// fabs
25
26[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float fabs(float __x) _NOEXCEPT { return __builtin_fabsf(__x); }
27
28template <class = int>
29[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double fabs(double __x) _NOEXCEPT {
30 return __builtin_fabs(__x);
31}
32
33[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double fabs(long double __x) _NOEXCEPT {
34 return __builtin_fabsl(__x);
35}
36
37template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
38[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI double fabs(_A1 __x) _NOEXCEPT {
39 return __builtin_fabs((double)__x);
40}
41
42// abs
43
44[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI inline float abs(float __x) _NOEXCEPT { return __builtin_fabsf(__x); }
45[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI inline double abs(double __x) _NOEXCEPT { return __builtin_fabs(__x); }
46
47[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI inline long double abs(long double __x) _NOEXCEPT {
48 return __builtin_fabsl(__x);
49}
50
51template <class = int>
52[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI inline int abs(int __x) _NOEXCEPT {
53 return __builtin_abs(__x);
54}
55
56template <class = int>
57[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI inline long abs(long __x) _NOEXCEPT {
58 return __builtin_labs(__x);
59}
60
61template <class = int>
62[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI inline long long abs(long long __x) _NOEXCEPT {
63 return __builtin_llabs(__x);
64}
65
66} // namespace __math
67
68_LIBCPP_END_NAMESPACE_STD
69
70#endif // _LIBCPP___MATH_ABS_H
71