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_RANGES_FILL_N_H 10#define _LIBCPP___ALGORITHM_RANGES_FILL_N_H 11 12#include <__config> 13#include <__iterator/concepts.h> 14#include <__iterator/incrementable_traits.h> 15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17# pragma GCC system_header 18#endif 19 20_LIBCPP_PUSH_MACROS 21#include <__undef_macros> 22 23#if _LIBCPP_STD_VER >= 20 24 25_LIBCPP_BEGIN_NAMESPACE_STD 26 27namespace ranges { 28namespace __fill_n { 29struct __fn { 30 template <class _Type, output_iterator<const _Type&> _Iter> 31 _LIBCPP_HIDE_FROM_ABI constexpr _Iter 32 operator()(_Iter __first, iter_difference_t<_Iter> __n, const _Type& __value) const { 33 for (; __n != 0; --__n) { 34 *__first = __value; 35 ++__first; 36 } 37 return __first; 38 } 39}; 40} // namespace __fill_n 41 42inline namespace __cpo { 43inline constexpr auto fill_n = __fill_n::__fn{}; 44} // namespace __cpo 45} // namespace ranges 46 47_LIBCPP_END_NAMESPACE_STD 48 49#endif // _LIBCPP_STD_VER >= 20 50 51_LIBCPP_POP_MACROS 52 53#endif // _LIBCPP___ALGORITHM_RANGES_FILL_N_H 54