39 lines · c
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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___ALGORITHM_BINARY_SEARCH_H10#define _LIBCPP___ALGORITHM_BINARY_SEARCH_H11 12#include <__algorithm/comp.h>13#include <__algorithm/comp_ref_type.h>14#include <__algorithm/lower_bound.h>15#include <__config>16 17#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)18# pragma GCC system_header19#endif20 21_LIBCPP_BEGIN_NAMESPACE_STD22 23template <class _ForwardIterator, class _Tp, class _Compare>24[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool25binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, _Compare __comp) {26 __first = std::lower_bound<_ForwardIterator, _Tp, __comp_ref_type<_Compare> >(__first, __last, __value, __comp);27 return __first != __last && !__comp(__value, *__first);28}29 30template <class _ForwardIterator, class _Tp>31[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool32binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) {33 return std::binary_search(__first, __last, __value, __less<>());34}35 36_LIBCPP_END_NAMESPACE_STD37 38#endif // _LIBCPP___ALGORITHM_BINARY_SEARCH_H39