15f757f3fSDimitry Andric //===----------------------------------------------------------------------===// 25f757f3fSDimitry Andric // 35f757f3fSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 45f757f3fSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 55f757f3fSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 65f757f3fSDimitry Andric // 75f757f3fSDimitry Andric //===----------------------------------------------------------------------===// 85f757f3fSDimitry Andric 95f757f3fSDimitry Andric #ifndef _LIBCPP___MATH_FDIM_H 105f757f3fSDimitry Andric #define _LIBCPP___MATH_FDIM_H 115f757f3fSDimitry Andric 125f757f3fSDimitry Andric #include <__config> 135f757f3fSDimitry Andric #include <__type_traits/enable_if.h> 145f757f3fSDimitry Andric #include <__type_traits/is_arithmetic.h> 155f757f3fSDimitry Andric #include <__type_traits/is_same.h> 165f757f3fSDimitry Andric #include <__type_traits/promote.h> 175f757f3fSDimitry Andric 185f757f3fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 195f757f3fSDimitry Andric # pragma GCC system_header 205f757f3fSDimitry Andric #endif 215f757f3fSDimitry Andric 225f757f3fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 235f757f3fSDimitry Andric 245f757f3fSDimitry Andric namespace __math { 255f757f3fSDimitry Andric 265f757f3fSDimitry Andric inline _LIBCPP_HIDE_FROM_ABI float fdim(float __x, float __y) _NOEXCEPT { return __builtin_fdimf(__x, __y); } 275f757f3fSDimitry Andric 285f757f3fSDimitry Andric template <class = int> 295f757f3fSDimitry Andric _LIBCPP_HIDE_FROM_ABI double fdim(double __x, double __y) _NOEXCEPT { 305f757f3fSDimitry Andric return __builtin_fdim(__x, __y); 315f757f3fSDimitry Andric } 325f757f3fSDimitry Andric 335f757f3fSDimitry Andric inline _LIBCPP_HIDE_FROM_ABI long double fdim(long double __x, long double __y) _NOEXCEPT { 345f757f3fSDimitry Andric return __builtin_fdiml(__x, __y); 355f757f3fSDimitry Andric } 365f757f3fSDimitry Andric 375f757f3fSDimitry Andric template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0> 385f757f3fSDimitry Andric inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type fdim(_A1 __x, _A2 __y) _NOEXCEPT { 395f757f3fSDimitry Andric using __result_type = typename __promote<_A1, _A2>::type; 40*0fca6ea1SDimitry Andric static_assert(!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value), ""); 415f757f3fSDimitry Andric return __math::fdim((__result_type)__x, (__result_type)__y); 425f757f3fSDimitry Andric } 435f757f3fSDimitry Andric 445f757f3fSDimitry Andric } // namespace __math 455f757f3fSDimitry Andric 465f757f3fSDimitry Andric _LIBCPP_END_NAMESPACE_STD 475f757f3fSDimitry Andric 485f757f3fSDimitry Andric #endif // _LIBCPP___MATH_FDIM_H 49