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_FMA_H
10#define _LIBCPP___MATH_FMA_H
11
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_header
20#endif
21
22_LIBCPP_BEGIN_NAMESPACE_STD
23
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 __math
52
53_LIBCPP_END_NAMESPACE_STD
54
55#endif // _LIBCPP___MATH_FMA_H
56