v1/__algorithm/replace_copy.h

0001 //===----------------------------------------------------------------------===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef _LIBCPP___ALGORITHM_REPLACE_COPY_H
0010 #define _LIBCPP___ALGORITHM_REPLACE_COPY_H
0011
0012 #include <__config>
0013
0014 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0015 #  pragma GCC system_header
0016 #endif
0017
0018 _LIBCPP_BEGIN_NAMESPACE_STD
0019
0020 template <class _InputIterator, class _OutputIterator, class _Tp>
0021 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator replace_copy(
0022     _InputIterator __first,
0023     _InputIterator __last,
0024     _OutputIterator __result,
0025     const _Tp& __old_value,
0026     const _Tp& __new_value) {
0027   for (; __first != __last; ++__first, (void)++__result)
0028     if (*__first == __old_value)
0029       *__result = __new_value;
0030     else
0031       *__result = *__first;
0032   return __result;
0033 }
0034
0035 _LIBCPP_END_NAMESPACE_STD
0036
0037 #endif // _LIBCPP___ALGORITHM_REPLACE_COPY_H