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_N_H
10 #define _LIBCPP___ALGORITHM_FILL_N_H
11 
12 #include <__config>
13 #include <__iterator/iterator_traits.h>
14 #include <type_traits>
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_n isn't specialized for std::memset, because the compiler already optimizes the loop to a call to std::memset.
23 
24 template <class _OutputIterator, class _Size, class _Tp>
25 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
26 _OutputIterator
27 __fill_n(_OutputIterator __first, _Size __n, const _Tp& __value)
28 {
29     for (; __n > 0; ++__first, (void) --__n)
30         *__first = __value;
31     return __first;
32 }
33 
34 template <class _OutputIterator, class _Size, class _Tp>
35 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
36 _OutputIterator
37 fill_n(_OutputIterator __first, _Size __n, const _Tp& __value)
38 {
39    return _VSTD::__fill_n(__first, _VSTD::__convert_to_integral(__n), __value);
40 }
41 
42 _LIBCPP_END_NAMESPACE_STD
43 
44 #endif // _LIBCPP___ALGORITHM_FILL_N_H
45