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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___COMPARE_COMPARE_THREE_WAY_H
#define _LIBCPP___COMPARE_COMPARE_THREE_WAY_H
#include <__compare/three_way_comparable.h>
#include <__config>
#include <__utility/forward.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 20
struct _LIBCPP_TEMPLATE_VIS compare_three_way {
template <class _T1, class _T2>
requires three_way_comparable_with<_T1, _T2>
constexpr _LIBCPP_HIDE_FROM_ABI auto operator()(_T1&& __t, _T2&& __u) const
noexcept(noexcept(std::forward<_T1>(__t) <=> std::forward<_T2>(__u))) {
return std::forward<_T1>(__t) <=> std::forward<_T2>(__u);
}
using is_transparent = void;
};
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___COMPARE_COMPARE_THREE_WAY_H
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