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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___CXX03___MATH_ABS_H10#define _LIBCPP___CXX03___MATH_ABS_H11 12#include <__cxx03/__config>13#include <__cxx03/__type_traits/enable_if.h>14#include <__cxx03/__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_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI float fabs(float __x) _NOEXCEPT { return __builtin_fabsf(__x); }27 28template <class = int>29_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI double fabs(double __x) _NOEXCEPT {30 return __builtin_fabs(__x);31}32 33_LIBCPP_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_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI double fabs(_A1 __x) _NOEXCEPT {39 return __builtin_fabs((double)__x);40}41 42} // namespace __math43 44_LIBCPP_END_NAMESPACE_STD45 46#endif // _LIBCPP___CXX03___MATH_ABS_H47