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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_ABS_H10#define _LIBCPP___MATH_ABS_H11 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_header18#endif19 20_LIBCPP_BEGIN_NAMESPACE_STD21 22namespace __math {23 24// fabs25 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// abs43 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 __math67 68_LIBCPP_END_NAMESPACE_STD69 70#endif // _LIBCPP___MATH_ABS_H71