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_COPY_IF_H
10#define _LIBCPP___ALGORITHM_COPY_IF_H
11
12#include <__config>
13
14#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
15#  pragma GCC system_header
16#endif
17
18_LIBCPP_BEGIN_NAMESPACE_STD
19
20template<class _InputIterator, class _OutputIterator, class _Predicate>
21inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
22_OutputIterator
23copy_if(_InputIterator __first, _InputIterator __last,
24        _OutputIterator __result, _Predicate __pred)
25{
26    for (; __first != __last; ++__first)
27    {
28        if (__pred(*__first))
29        {
30            *__result = *__first;
31            ++__result;
32        }
33    }
34    return __result;
35}
36
37_LIBCPP_END_NAMESPACE_STD
38
39#endif // _LIBCPP___ALGORITHM_COPY_IF_H
40