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 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 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