1e78f53d1SNikolas Klauser // -*- C++ -*- 2e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 3e78f53d1SNikolas Klauser // 4e78f53d1SNikolas Klauser // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5e78f53d1SNikolas Klauser // See https://llvm.org/LICENSE.txt for license information. 6e78f53d1SNikolas Klauser // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7e78f53d1SNikolas Klauser // 8e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 9e78f53d1SNikolas Klauser 10*ce777190SNikolas Klauser #ifndef _LIBCPP___CXX03___ITERATOR_MERGEABLE_H 11*ce777190SNikolas Klauser #define _LIBCPP___CXX03___ITERATOR_MERGEABLE_H 12e78f53d1SNikolas Klauser 1373fbae83SNikolas Klauser #include <__cxx03/__config> 1473fbae83SNikolas Klauser #include <__cxx03/__functional/identity.h> 1573fbae83SNikolas Klauser #include <__cxx03/__functional/ranges_operations.h> 1673fbae83SNikolas Klauser #include <__cxx03/__iterator/concepts.h> 1773fbae83SNikolas Klauser #include <__cxx03/__iterator/projected.h> 18e78f53d1SNikolas Klauser 19e78f53d1SNikolas Klauser #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20e78f53d1SNikolas Klauser # pragma GCC system_header 21e78f53d1SNikolas Klauser #endif 22e78f53d1SNikolas Klauser 23e78f53d1SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD 24e78f53d1SNikolas Klauser 25e78f53d1SNikolas Klauser #if _LIBCPP_STD_VER >= 20 26e78f53d1SNikolas Klauser 27e78f53d1SNikolas Klauser template <class _Input1, 28e78f53d1SNikolas Klauser class _Input2, 29e78f53d1SNikolas Klauser class _Output, 30e78f53d1SNikolas Klauser class _Comp = ranges::less, 31e78f53d1SNikolas Klauser class _Proj1 = identity, 32e78f53d1SNikolas Klauser class _Proj2 = identity> 33e78f53d1SNikolas Klauser concept mergeable = 34e78f53d1SNikolas Klauser input_iterator<_Input1> && input_iterator<_Input2> && weakly_incrementable<_Output> && 35e78f53d1SNikolas Klauser indirectly_copyable<_Input1, _Output> && indirectly_copyable<_Input2, _Output> && 36e78f53d1SNikolas Klauser indirect_strict_weak_order<_Comp, projected<_Input1, _Proj1>, projected<_Input2, _Proj2>>; 37e78f53d1SNikolas Klauser 38e78f53d1SNikolas Klauser #endif // _LIBCPP_STD_VER >= 20 39e78f53d1SNikolas Klauser 40e78f53d1SNikolas Klauser _LIBCPP_END_NAMESPACE_STD 41e78f53d1SNikolas Klauser 42*ce777190SNikolas Klauser #endif // _LIBCPP___CXX03___ITERATOR_MERGEABLE_H 43