1// -*- C++ -*-
 2//===----------------------------------------------------------------------===//
 3//
 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 5// See https://llvm.org/LICENSE.txt for license information.
 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 7//
 8//===----------------------------------------------------------------------===//
 9
10#ifndef _LIBCPP___ALGORITHM_FIND_FIRST_OF_H
11#define _LIBCPP___ALGORITHM_FIND_FIRST_OF_H
12
13#include <__algorithm/comp.h>
14#include <__config>
15
16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17#  pragma GCC system_header
18#endif
19
20_LIBCPP_BEGIN_NAMESPACE_STD
21
22template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
23_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator1 __find_first_of_ce(
24    _ForwardIterator1 __first1,
25    _ForwardIterator1 __last1,
26    _ForwardIterator2 __first2,
27    _ForwardIterator2 __last2,
28    _BinaryPredicate&& __pred) {
29  for (; __first1 != __last1; ++__first1)
30    for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
31      if (__pred(*__first1, *__j))
32        return __first1;
33  return __last1;
34}
35
36template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
37[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator1 find_first_of(
38    _ForwardIterator1 __first1,
39    _ForwardIterator1 __last1,
40    _ForwardIterator2 __first2,
41    _ForwardIterator2 __last2,
42    _BinaryPredicate __pred) {
43  return std::__find_first_of_ce(__first1, __last1, __first2, __last2, __pred);
44}
45
46template <class _ForwardIterator1, class _ForwardIterator2>
47[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator1 find_first_of(
48    _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) {
49  return std::__find_first_of_ce(__first1, __last1, __first2, __last2, __equal_to());
50}
51
52_LIBCPP_END_NAMESPACE_STD
53
54#endif // _LIBCPP___ALGORITHM_FIND_FIRST_OF_H