//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//==============================================================================
// NOTICE: This file has been modified by Green Hills Software, Inc.  Such
// modifications are subject to copyright by Green Hills Software, Inc.  See the
// "Green Hills Software Modifications" section in the LICENSE.txt included with
// this distribution for more information.
//==============================================================================

#ifndef _LIBCPP___ALGORITHM_RANGES_FILL_N_H
#define _LIBCPP___ALGORITHM_RANGES_FILL_N_H

#include <__config>
#include <__iterator/concepts.h>
#include <__iterator/incrementable_traits.h>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

#if _LIBCPP_STD_VER > 17

#if defined(__ghs__)
  #pragma ghs start_cxx_lib_header
  #pragma ghs startdata
  #if defined(__ghs_max_pack_value)
    #pragma pack (push, __ghs_max_pack_value)
  #endif
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

namespace ranges {
namespace __fill_n {
struct __fn {
  template <class _Type, output_iterator<const _Type&> _Iter>
  _LIBCPP_HIDE_FROM_ABI constexpr
  _Iter operator()(_Iter __first, iter_difference_t<_Iter> __n, const _Type& __value) const {
#if defined(__ghs__)
// __n is permitted to be < 0, in which case it should be treated as equal to 0
    for (; __n > 0; --__n) {
#else
    for (; __n != 0; --__n) {
#endif
      *__first = __value;
      ++__first;
    }
    return __first;
  }
};
} // namespace __fill_n

inline namespace __cpo {
  inline constexpr auto fill_n = __fill_n::__fn{};
} // namespace __cpo
} // namespace ranges

_LIBCPP_END_NAMESPACE_STD

#if defined(__ghs__)
  #if defined(__ghs_max_pack_value)
    #pragma pack(pop)
  #endif
  #pragma ghs enddata
  #pragma ghs end_cxx_lib_header
#endif

#endif // _LIBCPP_STD_VER > 17

#endif // _LIBCPP___ALGORITHM_RANGES_FILL_N_H