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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_FMA_H10#define _LIBCPP___MATH_FMA_H11 12#include <__config>13#include <__type_traits/enable_if.h>14#include <__type_traits/is_arithmetic.h>15#include <__type_traits/is_same.h>16#include <__type_traits/promote.h>17 18#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)19# pragma GCC system_header20#endif21 22_LIBCPP_BEGIN_NAMESPACE_STD23 24namespace __math {25 26inline _LIBCPP_HIDE_FROM_ABI float fma(float __x, float __y, float __z) _NOEXCEPT {27 return __builtin_fmaf(__x, __y, __z);28}29 30template <class = int>31_LIBCPP_HIDE_FROM_ABI double fma(double __x, double __y, double __z) _NOEXCEPT {32 return __builtin_fma(__x, __y, __z);33}34 35inline _LIBCPP_HIDE_FROM_ABI long double fma(long double __x, long double __y, long double __z) _NOEXCEPT {36 return __builtin_fmal(__x, __y, __z);37}38 39template <class _A1,40 class _A2,41 class _A3,42 __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value && is_arithmetic<_A3>::value, int> = 0>43inline _LIBCPP_HIDE_FROM_ABI __promote_t<_A1, _A2, _A3> fma(_A1 __x, _A2 __y, _A3 __z) _NOEXCEPT {44 using __result_type = __promote_t<_A1, _A2, _A3>;45 static_assert(46 !(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value && _IsSame<_A3, __result_type>::value),47 "");48 return __builtin_fma((__result_type)__x, (__result_type)__y, (__result_type)__z);49}50 51} // namespace __math52 53_LIBCPP_END_NAMESPACE_STD54 55#endif // _LIBCPP___MATH_FMA_H56