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1//===----------------------------------------------------------------------===//
2//
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
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H
10#define _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H
11
12#include <__algorithm/comp.h>
13#include <__algorithm/comp_ref_type.h>
14#include <__config>
15
16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17# pragma GCC system_header
18#endif
19
20_LIBCPP_BEGIN_NAMESPACE_STD
21
22template <class _Compare, class _ForwardIterator>
23_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator
24__is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) {
25 if (__first != __last) {
26 _ForwardIterator __i = __first;
27 while (++__i != __last) {
28 if (__comp(*__i, *__first))
29 return __i;
30 __first = __i;
31 }
32 }
33 return __last;
34}
35
36template <class _ForwardIterator, class _Compare>
37[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator
38is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) {
39 return std::__is_sorted_until<__comp_ref_type<_Compare> >(__first, __last, __comp);
40}
41
42template <class _ForwardIterator>
43[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator
44is_sorted_until(_ForwardIterator __first, _ForwardIterator __last) {
45 return std::is_sorted_until(__first, __last, __less<>());
46}
47
48_LIBCPP_END_NAMESPACE_STD
49
50#endif // _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H
51

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source code of libcxx/include/__algorithm/is_sorted_until.h