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156ab87500
See: * https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319 * https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701 We're dropping support for C++03 for Zig due to the first change; it would be insane to ship 1018 duplicate header files just for this outdated use case. As a result of the second change, I had to bring in a subset of the headers from llvm-libc since libc++ now depends on these. Hopefully we can continue to get away with not copying the entirety of llvm-libc.
74 lines
2.5 KiB
C++
Vendored
74 lines
2.5 KiB
C++
Vendored
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___MATH_MIN_MAX_H
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#define _LIBCPP___MATH_MIN_MAX_H
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#include <__config>
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#include <__type_traits/enable_if.h>
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#include <__type_traits/is_arithmetic.h>
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#include <__type_traits/is_same.h>
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#include <__type_traits/promote.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace __math {
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// fmax
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[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float fmax(float __x, float __y) _NOEXCEPT {
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return __builtin_fmaxf(__x, __y);
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}
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template <class = int>
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[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double fmax(double __x, double __y) _NOEXCEPT {
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return __builtin_fmax(__x, __y);
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}
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[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double fmax(long double __x, long double __y) _NOEXCEPT {
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return __builtin_fmaxl(__x, __y);
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}
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template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>
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[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type fmax(_A1 __x, _A2 __y) _NOEXCEPT {
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using __result_type = typename __promote<_A1, _A2>::type;
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static_assert(!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value), "");
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return __math::fmax((__result_type)__x, (__result_type)__y);
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}
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// fmin
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[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float fmin(float __x, float __y) _NOEXCEPT {
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return __builtin_fminf(__x, __y);
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}
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template <class = int>
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[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double fmin(double __x, double __y) _NOEXCEPT {
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return __builtin_fmin(__x, __y);
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}
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[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double fmin(long double __x, long double __y) _NOEXCEPT {
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return __builtin_fminl(__x, __y);
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}
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template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>
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[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type fmin(_A1 __x, _A2 __y) _NOEXCEPT {
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using __result_type = typename __promote<_A1, _A2>::type;
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static_assert(!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value), "");
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return __math::fmin((__result_type)__x, (__result_type)__y);
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}
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} // namespace __math
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___MATH_MIN_MAX_H
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