chromium/third_party/libc++/src/include/__compare/partial_order.h

//===----------------------------------------------------------------------===//
//
// 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_PARTIAL_ORDER
#define _LIBCPP___COMPARE_PARTIAL_ORDER

#include <__compare/compare_three_way.h>
#include <__compare/ordering.h>
#include <__compare/weak_order.h>
#include <__config>
#include <__type_traits/decay.h>
#include <__type_traits/is_same.h>
#include <__utility/forward.h>
#include <__utility/priority_tag.h>

#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
#  pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

#if _LIBCPP_STD_VER >= 20

// [cmp.alg]
namespace __partial_order {
void partial_order() = delete;

struct __fn { … };
} // namespace __partial_order

inline namespace __cpo {
inline constexpr auto partial_order = …;
} // namespace __cpo

#endif // _LIBCPP_STD_VER >= 20

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP___COMPARE_PARTIAL_ORDER