xref: /freebsd/contrib/llvm-project/libcxx/include/__algorithm/replace_copy.h (revision a90b9d0159070121c221b966469c3e36d912bf82)
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_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator replace_copy(
22     _InputIterator __first,
23     _InputIterator __last,
24     _OutputIterator __result,
25     const _Tp& __old_value,
26     const _Tp& __new_value) {
27   for (; __first != __last; ++__first, (void)++__result)
28     if (*__first == __old_value)
29       *__result = __new_value;
30     else
31       *__result = *__first;
32   return __result;
33 }
34 
35 _LIBCPP_END_NAMESPACE_STD
36 
37 #endif // _LIBCPP___ALGORITHM_REPLACE_COPY_H
38