1e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 2e78f53d1SNikolas Klauser // 3e78f53d1SNikolas Klauser // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4e78f53d1SNikolas Klauser // See https://llvm.org/LICENSE.txt for license information. 5e78f53d1SNikolas Klauser // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6e78f53d1SNikolas Klauser // 7e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 8e78f53d1SNikolas Klauser 9*ce777190SNikolas Klauser #ifndef _LIBCPP___CXX03___ALGORITHM_LEXICOGRAPHICAL_COMPARE_H 10*ce777190SNikolas Klauser #define _LIBCPP___CXX03___ALGORITHM_LEXICOGRAPHICAL_COMPARE_H 11e78f53d1SNikolas Klauser 1273fbae83SNikolas Klauser #include <__cxx03/__algorithm/comp.h> 1373fbae83SNikolas Klauser #include <__cxx03/__algorithm/comp_ref_type.h> 1473fbae83SNikolas Klauser #include <__cxx03/__config> 1573fbae83SNikolas Klauser #include <__cxx03/__iterator/iterator_traits.h> 16e78f53d1SNikolas Klauser 17e78f53d1SNikolas Klauser #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18e78f53d1SNikolas Klauser # pragma GCC system_header 19e78f53d1SNikolas Klauser #endif 20e78f53d1SNikolas Klauser 21e78f53d1SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD 22e78f53d1SNikolas Klauser 23e78f53d1SNikolas Klauser template <class _Compare, class _InputIterator1, class _InputIterator2> 24e78f53d1SNikolas Klauser _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool __lexicographical_compare( 25e78f53d1SNikolas Klauser _InputIterator1 __first1, 26e78f53d1SNikolas Klauser _InputIterator1 __last1, 27e78f53d1SNikolas Klauser _InputIterator2 __first2, 28e78f53d1SNikolas Klauser _InputIterator2 __last2, 29e78f53d1SNikolas Klauser _Compare __comp) { 30e78f53d1SNikolas Klauser for (; __first2 != __last2; ++__first1, (void)++__first2) { 31e78f53d1SNikolas Klauser if (__first1 == __last1 || __comp(*__first1, *__first2)) 32e78f53d1SNikolas Klauser return true; 33e78f53d1SNikolas Klauser if (__comp(*__first2, *__first1)) 34e78f53d1SNikolas Klauser return false; 35e78f53d1SNikolas Klauser } 36e78f53d1SNikolas Klauser return false; 37e78f53d1SNikolas Klauser } 38e78f53d1SNikolas Klauser 39e78f53d1SNikolas Klauser template <class _InputIterator1, class _InputIterator2, class _Compare> 40e78f53d1SNikolas Klauser _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool lexicographical_compare( 41e78f53d1SNikolas Klauser _InputIterator1 __first1, 42e78f53d1SNikolas Klauser _InputIterator1 __last1, 43e78f53d1SNikolas Klauser _InputIterator2 __first2, 44e78f53d1SNikolas Klauser _InputIterator2 __last2, 45e78f53d1SNikolas Klauser _Compare __comp) { 46e78f53d1SNikolas Klauser return std::__lexicographical_compare<__comp_ref_type<_Compare> >(__first1, __last1, __first2, __last2, __comp); 47e78f53d1SNikolas Klauser } 48e78f53d1SNikolas Klauser 49e78f53d1SNikolas Klauser template <class _InputIterator1, class _InputIterator2> 50e78f53d1SNikolas Klauser _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool lexicographical_compare( 51e78f53d1SNikolas Klauser _InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) { 52e78f53d1SNikolas Klauser return std::lexicographical_compare(__first1, __last1, __first2, __last2, __less<>()); 53e78f53d1SNikolas Klauser } 54e78f53d1SNikolas Klauser 55e78f53d1SNikolas Klauser _LIBCPP_END_NAMESPACE_STD 56e78f53d1SNikolas Klauser 57*ce777190SNikolas Klauser #endif // _LIBCPP___CXX03___ALGORITHM_LEXICOGRAPHICAL_COMPARE_H 58