1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP___ITERATOR_INDIRECTLY_COMPARABLE_H 11#define _LIBCPP___ITERATOR_INDIRECTLY_COMPARABLE_H 12 13#include <__config> 14#include <__functional/identity.h> 15#include <__iterator/concepts.h> 16#include <__iterator/projected.h> 17 18#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 19# pragma GCC system_header 20#endif 21 22_LIBCPP_BEGIN_NAMESPACE_STD 23 24#if _LIBCPP_STD_VER >= 20 25 26template <class _I1, class _I2, class _Rp, class _P1 = identity, class _P2 = identity> 27concept indirectly_comparable = indirect_binary_predicate<_Rp, projected<_I1, _P1>, projected<_I2, _P2>>; 28 29#endif // _LIBCPP_STD_VER >= 20 30 31_LIBCPP_END_NAMESPACE_STD 32 33#endif // _LIBCPP___ITERATOR_INDIRECTLY_COMPARABLE_H 34