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 <__config>
13 #include <__algorithm/comp.h>
14 #include <__iterator/iterator_traits.h>
15
16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17 #pragma GCC system_header
18 #endif
19
20 _LIBCPP_PUSH_MACROS
21 #include <__undef_macros>
22
23 _LIBCPP_BEGIN_NAMESPACE_STD
24
25 template <class _ForwardIterator, class _Compare>
26 _LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
is_sorted_until(_ForwardIterator __first,_ForwardIterator __last,_Compare __comp)27 is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
28 {
29 if (__first != __last)
30 {
31 _ForwardIterator __i = __first;
32 while (++__i != __last)
33 {
34 if (__comp(*__i, *__first))
35 return __i;
36 __first = __i;
37 }
38 }
39 return __last;
40 }
41
42 template<class _ForwardIterator>
43 _LIBCPP_NODISCARD_EXT inline
44 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
45 _ForwardIterator
is_sorted_until(_ForwardIterator __first,_ForwardIterator __last)46 is_sorted_until(_ForwardIterator __first, _ForwardIterator __last)
47 {
48 return _VSTD::is_sorted_until(__first, __last, __less<typename iterator_traits<_ForwardIterator>::value_type>());
49 }
50
51 _LIBCPP_END_NAMESPACE_STD
52
53 _LIBCPP_POP_MACROS
54
55 #endif // _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H
56