xref: /freebsd/contrib/llvm-project/libcxx/include/__algorithm/replace_copy.h (revision b9385720f34b536ef2568a642e8b1fad0450056f)
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_REPLACE_COPY_H
10  #define _LIBCPP___ALGORITHM_REPLACE_COPY_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 _Tp>
21  inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
22  _OutputIterator
23  replace_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result,
24               const _Tp& __old_value, const _Tp& __new_value)
25  {
26      for (; __first != __last; ++__first, (void) ++__result)
27          if (*__first == __old_value)
28              *__result = __new_value;
29          else
30              *__result = *__first;
31      return __result;
32  }
33  
34  _LIBCPP_END_NAMESPACE_STD
35  
36  #endif // _LIBCPP___ALGORITHM_REPLACE_COPY_H
37