1 //===----------------------------------------------------------------------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #ifndef _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H
10 #define _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H
12 #include <__algorithm/inplace_merge.h>
13 #include <__algorithm/make_projected.h>
15 #include <__functional/identity.h>
16 #include <__functional/invoke.h>
17 #include <__functional/ranges_operations.h>
18 #include <__iterator/concepts.h>
19 #include <__iterator/iterator_traits.h>
20 #include <__iterator/projected.h>
21 #include <__iterator/sortable.h>
22 #include <__ranges/access.h>
23 #include <__ranges/concepts.h>
24 #include <__ranges/dangling.h>
25 #include <__utility/forward.h>
26 #include <__utility/move.h>
28 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
29 # pragma GCC system_header
32 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
34 _LIBCPP_BEGIN_NAMESPACE_STD
37 namespace __inplace_merge {
41 template <bidirectional_iterator _Iter, sentinel_for<_Iter> _Sent, class _Comp = ranges::less, class _Proj = identity>
42 requires sortable<_Iter, _Comp, _Proj>
44 _Iter operator()(_Iter __first, _Iter __middle, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const {
46 (void)__first; (void)__middle; (void)__last; (void)__comp; (void)__proj;
50 template <bidirectional_range _Range, class _Comp = ranges::less, class _Proj = identity>
51 requires sortable<iterator_t<_Range>, _Comp, _Proj>
53 borrowed_iterator_t<_Range> operator()(_Range&& __range, iterator_t<_Range> __middle,
54 _Comp __comp = {}, _Proj __proj = {}) const {
56 (void)__range; (void)__middle; (void)__comp; (void)__proj;
62 } // namespace __inplace_merge
64 inline namespace __cpo {
65 inline constexpr auto inplace_merge = __inplace_merge::__fn{};
69 _LIBCPP_END_NAMESPACE_STD
71 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
73 #endif // _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H