xref: /openbsd-src/gnu/llvm/libcxx/include/__algorithm/remove_if.h (revision 4bdff4bed0e3d54e55670334c7d0077db4170f86)
176d0caaeSpatrick //===----------------------------------------------------------------------===//
276d0caaeSpatrick //
376d0caaeSpatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
476d0caaeSpatrick // See https://llvm.org/LICENSE.txt for license information.
576d0caaeSpatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
676d0caaeSpatrick //
776d0caaeSpatrick //===----------------------------------------------------------------------===//
876d0caaeSpatrick 
976d0caaeSpatrick #ifndef _LIBCPP___ALGORITHM_REMOVE_IF_H
1076d0caaeSpatrick #define _LIBCPP___ALGORITHM_REMOVE_IF_H
1176d0caaeSpatrick 
1276d0caaeSpatrick #include <__algorithm/find_if.h>
13*4bdff4beSrobert #include <__config>
14*4bdff4beSrobert #include <__utility/move.h>
1576d0caaeSpatrick 
1676d0caaeSpatrick #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
1776d0caaeSpatrick #  pragma GCC system_header
1876d0caaeSpatrick #endif
1976d0caaeSpatrick 
2076d0caaeSpatrick _LIBCPP_BEGIN_NAMESPACE_STD
2176d0caaeSpatrick 
2276d0caaeSpatrick template <class _ForwardIterator, class _Predicate>
23*4bdff4beSrobert _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator
remove_if(_ForwardIterator __first,_ForwardIterator __last,_Predicate __pred)2476d0caaeSpatrick remove_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
2576d0caaeSpatrick {
26*4bdff4beSrobert     __first = _VSTD::find_if<_ForwardIterator, _Predicate&>(__first, __last, __pred);
2776d0caaeSpatrick     if (__first != __last)
2876d0caaeSpatrick     {
2976d0caaeSpatrick         _ForwardIterator __i = __first;
3076d0caaeSpatrick         while (++__i != __last)
3176d0caaeSpatrick         {
3276d0caaeSpatrick             if (!__pred(*__i))
3376d0caaeSpatrick             {
3476d0caaeSpatrick                 *__first = _VSTD::move(*__i);
3576d0caaeSpatrick                 ++__first;
3676d0caaeSpatrick             }
3776d0caaeSpatrick         }
3876d0caaeSpatrick     }
3976d0caaeSpatrick     return __first;
4076d0caaeSpatrick }
4176d0caaeSpatrick 
4276d0caaeSpatrick _LIBCPP_END_NAMESPACE_STD
4376d0caaeSpatrick 
4476d0caaeSpatrick #endif // _LIBCPP___ALGORITHM_REMOVE_IF_H
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