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_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator 22 copy_if(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _Predicate __pred) { 23 for (; __first != __last; ++__first) { 24 if (__pred(*__first)) { 25 *__result = *__first; 26 ++__result; 27 } 28 } 29 return __result; 30 } 31 32 _LIBCPP_END_NAMESPACE_STD 33 34 #endif // _LIBCPP___ALGORITHM_COPY_IF_H 35