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 24template <class _ForwardIterator, class _Tp> 25inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void 26__fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, forward_iterator_tag) { 27 for (; __first != __last; ++__first) 28 *__first = __value; 29} 30 31template <class _RandomAccessIterator, class _Tp> 32inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void 33__fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value, random_access_iterator_tag) { 34 std::fill_n(__first, __last - __first, __value); 35} 36 37template <class _ForwardIterator, class _Tp> 38inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void 39fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { 40 std::__fill(__first, __last, __value, typename iterator_traits<_ForwardIterator>::iterator_category()); 41} 42 43_LIBCPP_END_NAMESPACE_STD 44 45#endif // _LIBCPP___ALGORITHM_FILL_H 46