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_H
10 #define _LIBCPP___ALGORITHM_IS_SORTED_H
11 
12 #include <__algorithm/comp.h>
13 #include <__algorithm/is_sorted_until.h>
14 #include <__config>
15 #include <__iterator/iterator_traits.h>
16 
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 #pragma GCC system_header
19 #endif
20 
21 _LIBCPP_BEGIN_NAMESPACE_STD
22 
23 template <class _ForwardIterator, class _Compare>
24 _LIBCPP_NODISCARD_EXT inline
25 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
26 bool
27 is_sorted(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
28 {
29     return _VSTD::is_sorted_until(__first, __last, __comp) == __last;
30 }
31 
32 template<class _ForwardIterator>
33 _LIBCPP_NODISCARD_EXT inline
34 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
35 bool
36 is_sorted(_ForwardIterator __first, _ForwardIterator __last)
37 {
38     return _VSTD::is_sorted(__first, __last, __less<typename iterator_traits<_ForwardIterator>::value_type>());
39 }
40 
41 _LIBCPP_END_NAMESPACE_STD
42 
43 #endif // _LIBCPP___ALGORITHM_IS_SORTED_H
44