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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_RANGES_POP_HEAP_H
#define _LIBCPP___ALGORITHM_RANGES_POP_HEAP_H
#include <__algorithm/iterator_operations.h>
#include <__algorithm/make_projected.h>
#include <__algorithm/pop_heap.h>
#include <__concepts/same_as.h>
#include <__config>
#include <__functional/identity.h>
#include <__functional/invoke.h>
#include <__functional/ranges_operations.h>
#include <__iterator/concepts.h>
#include <__iterator/iterator_traits.h>
#include <__iterator/next.h>
#include <__iterator/projected.h>
#include <__iterator/sortable.h>
#include <__ranges/access.h>
#include <__ranges/concepts.h>
#include <__ranges/dangling.h>
#include <__utility/forward.h>
#include <__utility/move.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#if _LIBCPP_STD_VER >= 20
_LIBCPP_BEGIN_NAMESPACE_STD
namespace ranges {
namespace __pop_heap {
struct __fn {
template <class _Iter, class _Sent, class _Comp, class _Proj>
_LIBCPP_HIDE_FROM_ABI constexpr static _Iter
__pop_heap_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) {
auto __last_iter = ranges::next(__first, __last);
auto __len = __last_iter - __first;
auto&& __projected_comp = std::__make_projected(__comp, __proj);
std::__pop_heap<_RangeAlgPolicy>(std::move(__first), __last_iter, __projected_comp, __len);
return __last_iter;
}
template <random_access_iterator _Iter, sentinel_for<_Iter> _Sent, class _Comp = ranges::less, class _Proj = identity>
requires sortable<_Iter, _Comp, _Proj>
_LIBCPP_HIDE_FROM_ABI constexpr _Iter
operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const {
return __pop_heap_fn_impl(std::move(__first), std::move(__last), __comp, __proj);
}
template <random_access_range _Range, class _Comp = ranges::less, class _Proj = identity>
requires sortable<iterator_t<_Range>, _Comp, _Proj>
_LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range>
operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const {
return __pop_heap_fn_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj);
}
};
} // namespace __pop_heap
inline namespace __cpo {
inline constexpr auto pop_heap = __pop_heap::__fn{};
} // namespace __cpo
} // namespace ranges
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER >= 20
#endif // _LIBCPP___ALGORITHM_RANGES_POP_HEAP_H
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