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