1e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 2e78f53d1SNikolas Klauser // 3e78f53d1SNikolas Klauser // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4e78f53d1SNikolas Klauser // See https://llvm.org/LICENSE.txt for license information. 5e78f53d1SNikolas Klauser // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6e78f53d1SNikolas Klauser // 7e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 8e78f53d1SNikolas Klauser 9*ce777190SNikolas Klauser #ifndef _LIBCPP___CXX03___CONCEPTS_RELATION_H 10*ce777190SNikolas Klauser #define _LIBCPP___CXX03___CONCEPTS_RELATION_H 11e78f53d1SNikolas Klauser 1273fbae83SNikolas Klauser #include <__cxx03/__concepts/predicate.h> 1373fbae83SNikolas Klauser #include <__cxx03/__config> 14e78f53d1SNikolas Klauser 15e78f53d1SNikolas Klauser #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16e78f53d1SNikolas Klauser # pragma GCC system_header 17e78f53d1SNikolas Klauser #endif 18e78f53d1SNikolas Klauser 19e78f53d1SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD 20e78f53d1SNikolas Klauser 21e78f53d1SNikolas Klauser #if _LIBCPP_STD_VER >= 20 22e78f53d1SNikolas Klauser 23e78f53d1SNikolas Klauser // [concept.relation] 24e78f53d1SNikolas Klauser 25e78f53d1SNikolas Klauser template <class _Rp, class _Tp, class _Up> 26e78f53d1SNikolas Klauser concept relation = 27e78f53d1SNikolas Klauser predicate<_Rp, _Tp, _Tp> && predicate<_Rp, _Up, _Up> && predicate<_Rp, _Tp, _Up> && predicate<_Rp, _Up, _Tp>; 28e78f53d1SNikolas Klauser 29e78f53d1SNikolas Klauser // [concept.equiv] 30e78f53d1SNikolas Klauser 31e78f53d1SNikolas Klauser template <class _Rp, class _Tp, class _Up> 32e78f53d1SNikolas Klauser concept equivalence_relation = relation<_Rp, _Tp, _Up>; 33e78f53d1SNikolas Klauser 34e78f53d1SNikolas Klauser // [concept.strictweakorder] 35e78f53d1SNikolas Klauser 36e78f53d1SNikolas Klauser template <class _Rp, class _Tp, class _Up> 37e78f53d1SNikolas Klauser concept strict_weak_order = relation<_Rp, _Tp, _Up>; 38e78f53d1SNikolas Klauser 39e78f53d1SNikolas Klauser #endif // _LIBCPP_STD_VER >= 20 40e78f53d1SNikolas Klauser 41e78f53d1SNikolas Klauser _LIBCPP_END_NAMESPACE_STD 42e78f53d1SNikolas Klauser 43*ce777190SNikolas Klauser #endif // _LIBCPP___CXX03___CONCEPTS_RELATION_H 44