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_BINARY_SEARCH_H
10#define _LIBCPP___ALGORITHM_BINARY_SEARCH_H
11
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_header
19#endif
20
21_LIBCPP_BEGIN_NAMESPACE_STD
22
23template <class _ForwardIterator, class _Tp, class _Compare>
24[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool
25binary_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 bool
32binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) {
33 return std::binary_search(__first, __last, __value, __less<>());
34}
35
36_LIBCPP_END_NAMESPACE_STD
37
38#endif // _LIBCPP___ALGORITHM_BINARY_SEARCH_H
39