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 #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 _Compare, class _ForwardIterator> 24 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator 25 __is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) 26 { 27 if (__first != __last) 28 { 29 _ForwardIterator __i = __first; 30 while (++__i != __last) 31 { 32 if (__comp(*__i, *__first)) 33 return __i; 34 __first = __i; 35 } 36 } 37 return __last; 38 } 39 40 template <class _ForwardIterator, class _Compare> 41 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator 42 is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) 43 { 44 return _VSTD::__is_sorted_until<__comp_ref_type<_Compare> >(__first, __last, __comp); 45 } 46 47 template<class _ForwardIterator> 48 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator 49 is_sorted_until(_ForwardIterator __first, _ForwardIterator __last) 50 { 51 return _VSTD::is_sorted_until(__first, __last, __less<typename iterator_traits<_ForwardIterator>::value_type>()); 52 } 53 54 _LIBCPP_END_NAMESPACE_STD 55 56 #endif // _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H 57