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_SINCE_CXX20 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