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_FILL_H 10 #define _LIBCPP___ALGORITHM_FILL_H 11 12 #include <__algorithm/fill_n.h> 13 #include <__config> 14 #include <__iterator/iterator_traits.h> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 // fill isn't specialized for std::memset, because the compiler already optimizes the loop to a call to std::memset. 23 24 template <class _ForwardIterator, class _Tp> 25 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 26 void 27 __fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, forward_iterator_tag) 28 { 29 for (; __first != __last; ++__first) 30 *__first = __value; 31 } 32 33 template <class _RandomAccessIterator, class _Tp> 34 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 35 void 36 __fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value, random_access_iterator_tag) 37 { 38 _VSTD::fill_n(__first, __last - __first, __value); 39 } 40 41 template <class _ForwardIterator, class _Tp> 42 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 43 void 44 fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) 45 { 46 _VSTD::__fill(__first, __last, __value, typename iterator_traits<_ForwardIterator>::iterator_category()); 47 } 48 49 _LIBCPP_END_NAMESPACE_STD 50 51 #endif // _LIBCPP___ALGORITHM_FILL_H 52