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 <__utility/convert_to_integral.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_n isn't specialized for std::memset, because the compiler already optimizes the loop to a call to std::memset. 23 24template <class _OutputIterator, class _Size, class _Tp> 25inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator 26__fill_n(_OutputIterator __first, _Size __n, const _Tp& __value) { 27 for (; __n > 0; ++__first, (void)--__n) 28 *__first = __value; 29 return __first; 30} 31 32template <class _OutputIterator, class _Size, class _Tp> 33inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator 34fill_n(_OutputIterator __first, _Size __n, const _Tp& __value) { 35 return std::__fill_n(__first, std::__convert_to_integral(__n), __value); 36} 37 38_LIBCPP_END_NAMESPACE_STD 39 40#endif // _LIBCPP___ALGORITHM_FILL_N_H 41