v1/__math/min_max.h

0001 //===----------------------------------------------------------------------===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef _LIBCPP___MATH_MIN_MAX_H
0010 #define _LIBCPP___MATH_MIN_MAX_H
0011
0012 #include <__config>
0013 #include <__type_traits/enable_if.h>
0014 #include <__type_traits/is_arithmetic.h>
0015 #include <__type_traits/is_same.h>
0016 #include <__type_traits/promote.h>
0017
0018 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0019 #  pragma GCC system_header
0020 #endif
0021
0022 _LIBCPP_BEGIN_NAMESPACE_STD
0023
0024 namespace __math {
0025
0026 // fmax
0027
0028 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float fmax(float __x, float __y) _NOEXCEPT {
0029   return __builtin_fmaxf(__x, __y);
0030 }
0031
0032 template <class = int>
0033 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double fmax(double __x, double __y) _NOEXCEPT {
0034   return __builtin_fmax(__x, __y);
0035 }
0036
0037 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double fmax(long double __x, long double __y) _NOEXCEPT {
0038   return __builtin_fmaxl(__x, __y);
0039 }
0040
0041 template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>
0042 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type fmax(_A1 __x, _A2 __y) _NOEXCEPT {
0043   using __result_type = typename __promote<_A1, _A2>::type;
0044   static_assert(!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value), "");
0045   return __math::fmax((__result_type)__x, (__result_type)__y);
0046 }
0047
0048 // fmin
0049
0050 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float fmin(float __x, float __y) _NOEXCEPT {
0051   return __builtin_fminf(__x, __y);
0052 }
0053
0054 template <class = int>
0055 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double fmin(double __x, double __y) _NOEXCEPT {
0056   return __builtin_fmin(__x, __y);
0057 }
0058
0059 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double fmin(long double __x, long double __y) _NOEXCEPT {
0060   return __builtin_fminl(__x, __y);
0061 }
0062
0063 template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>
0064 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type fmin(_A1 __x, _A2 __y) _NOEXCEPT {
0065   using __result_type = typename __promote<_A1, _A2>::type;
0066   static_assert(!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value), "");
0067   return __math::fmin((__result_type)__x, (__result_type)__y);
0068 }
0069
0070 } // namespace __math
0071
0072 _LIBCPP_END_NAMESPACE_STD
0073
0074 #endif // _LIBCPP___MATH_MIN_MAX_H