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 
20 template<class _InputIterator, class _OutputIterator, class _Predicate>
21 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
22 _OutputIterator
23 copy_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