libcxx/include/__algorithm/ranges_fill_n.h

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