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_IS_SORTED_UNTIL_H
10 #define _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H
12 #include <__algorithm/comp.h>
13 #include <__algorithm/comp_ref_type.h>
15 #include <__iterator/iterator_traits.h>
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 # pragma GCC system_header
21 _LIBCPP_BEGIN_NAMESPACE_STD
23 template <class _Compare, class _ForwardIterator>
24 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
25 __is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
27 if (__first != __last)
29 _ForwardIterator __i = __first;
30 while (++__i != __last)
32 if (__comp(*__i, *__first))
40 template <class _ForwardIterator, class _Compare>
41 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
42 is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
44 typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
45 return _VSTD::__is_sorted_until<_Comp_ref>(__first, __last, __comp);
48 template<class _ForwardIterator>
49 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
50 is_sorted_until(_ForwardIterator __first, _ForwardIterator __last)
52 return _VSTD::is_sorted_until(__first, __last, __less<typename iterator_traits<_ForwardIterator>::value_type>());
55 _LIBCPP_END_NAMESPACE_STD
57 #endif // _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H