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 22 namespace __math { 23 24 // fabs 25 26 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI float fabs(float __x) _NOEXCEPT { return __builtin_fabsf(__x); } 27 28 template <class = int> 29 _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI double fabs(double __x) _NOEXCEPT { 30 return __builtin_fabs(__x); 31 } 32 33 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI long double fabs(long double __x) _NOEXCEPT { 34 return __builtin_fabsl(__x); 35 } 36 37 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 38 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI double fabs(_A1 __x) _NOEXCEPT { 39 return __builtin_fabs((double)__x); 40 } 41 42 } // namespace __math 43 44 _LIBCPP_END_NAMESPACE_STD 45 46 #endif // _LIBCPP___MATH_ABS_H 47