1*4bdff4beSrobert // -*- C++ -*- 2*4bdff4beSrobert //===----------------------------------------------------------------------===// 3*4bdff4beSrobert // 4*4bdff4beSrobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5*4bdff4beSrobert // See https://llvm.org/LICENSE.txt for license information. 6*4bdff4beSrobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7*4bdff4beSrobert // 8*4bdff4beSrobert //===----------------------------------------------------------------------===// 9*4bdff4beSrobert 10*4bdff4beSrobert #ifndef _LIBCPP___COMPARE_COMPARE_THREE_WAY_H 11*4bdff4beSrobert #define _LIBCPP___COMPARE_COMPARE_THREE_WAY_H 12*4bdff4beSrobert 13*4bdff4beSrobert #include <__compare/three_way_comparable.h> 14*4bdff4beSrobert #include <__config> 15*4bdff4beSrobert #include <__utility/forward.h> 16*4bdff4beSrobert 17*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18*4bdff4beSrobert # pragma GCC system_header 19*4bdff4beSrobert #endif 20*4bdff4beSrobert 21*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD 22*4bdff4beSrobert 23*4bdff4beSrobert #if _LIBCPP_STD_VER > 17 24*4bdff4beSrobert 25*4bdff4beSrobert struct _LIBCPP_TEMPLATE_VIS compare_three_way 26*4bdff4beSrobert { 27*4bdff4beSrobert template<class _T1, class _T2> 28*4bdff4beSrobert requires three_way_comparable_with<_T1, _T2> 29*4bdff4beSrobert constexpr _LIBCPP_HIDE_FROM_ABI operatorcompare_three_way30*4bdff4beSrobert auto operator()(_T1&& __t, _T2&& __u) const 31*4bdff4beSrobert noexcept(noexcept(_VSTD::forward<_T1>(__t) <=> _VSTD::forward<_T2>(__u))) 32*4bdff4beSrobert { return _VSTD::forward<_T1>(__t) <=> _VSTD::forward<_T2>(__u); } 33*4bdff4beSrobert 34*4bdff4beSrobert using is_transparent = void; 35*4bdff4beSrobert }; 36*4bdff4beSrobert 37*4bdff4beSrobert #endif // _LIBCPP_STD_VER > 17 38*4bdff4beSrobert 39*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD 40*4bdff4beSrobert 41*4bdff4beSrobert #endif // _LIBCPP___COMPARE_COMPARE_THREE_WAY_H 42