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
fdim(float __x,float __y)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>
fdim(double __x,double __y)295f757f3fSDimitry Andric _LIBCPP_HIDE_FROM_ABI double fdim(double __x, double __y) _NOEXCEPT {
305f757f3fSDimitry Andric return __builtin_fdim(__x, __y);
315f757f3fSDimitry Andric }
325f757f3fSDimitry Andric
fdim(long double __x,long double __y)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>
fdim(_A1 __x,_A2 __y)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
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