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_BINARY_SEARCH_H 10*ce777190SNikolas Klauser #define _LIBCPP___CXX03___ALGORITHM_BINARY_SEARCH_H 11e78f53d1SNikolas Klauser 1273fbae83SNikolas Klauser #include <__cxx03/__algorithm/comp.h> 1373fbae83SNikolas Klauser #include <__cxx03/__algorithm/comp_ref_type.h> 1473fbae83SNikolas Klauser #include <__cxx03/__algorithm/lower_bound.h> 1573fbae83SNikolas Klauser #include <__cxx03/__config> 1673fbae83SNikolas Klauser #include <__cxx03/__iterator/iterator_traits.h> 17e78f53d1SNikolas Klauser 18e78f53d1SNikolas Klauser #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 19e78f53d1SNikolas Klauser # pragma GCC system_header 20e78f53d1SNikolas Klauser #endif 21e78f53d1SNikolas Klauser 22e78f53d1SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD 23e78f53d1SNikolas Klauser 24e78f53d1SNikolas Klauser template <class _ForwardIterator, class _Tp, class _Compare> 25e78f53d1SNikolas Klauser _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool 26e78f53d1SNikolas Klauser binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, _Compare __comp) { 27e78f53d1SNikolas Klauser __first = std::lower_bound<_ForwardIterator, _Tp, __comp_ref_type<_Compare> >(__first, __last, __value, __comp); 28e78f53d1SNikolas Klauser return __first != __last && !__comp(__value, *__first); 29e78f53d1SNikolas Klauser } 30e78f53d1SNikolas Klauser 31e78f53d1SNikolas Klauser template <class _ForwardIterator, class _Tp> 32e78f53d1SNikolas Klauser _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool 33e78f53d1SNikolas Klauser binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { 34e78f53d1SNikolas Klauser return std::binary_search(__first, __last, __value, __less<>()); 35e78f53d1SNikolas Klauser } 36e78f53d1SNikolas Klauser 37e78f53d1SNikolas Klauser _LIBCPP_END_NAMESPACE_STD 38e78f53d1SNikolas Klauser 39*ce777190SNikolas Klauser #endif // _LIBCPP___CXX03___ALGORITHM_BINARY_SEARCH_H 40