Sprout/sprout/algorithm/cxx14/pop_heap.hpp
2018-12-30 17:25:21 +09:00

53 lines
1.9 KiB
C++

/*=============================================================================
Copyright (c) 2011-2018 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_ALGORITHM_CXX14_POP_HEAP_HPP
#define SPROUT_ALGORITHM_CXX14_POP_HEAP_HPP
#include <iterator>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/algorithm/cxx14/detail/heap_tool.hpp>
#include <sprout/utility/swap.hpp>
#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
namespace sprout {
namespace detail {
template<typename Compare, typename RandomAccessIterator>
inline SPROUT_CXX14_CONSTEXPR void
pop_heap(
RandomAccessIterator first, RandomAccessIterator last, Compare comp,
typename std::iterator_traits<RandomAccessIterator>::difference_type len
)
{
if (len > 1) {
sprout::swap(*first, *--last);
sprout::detail::push_heap_front<Compare>(first, last, comp, len - 1);
}
}
} // namespace detail
//
// 25.4.6.2 pop_heap
//
template<typename RandomAccessIterator, typename Compare>
inline SPROUT_CXX14_CONSTEXPR void
pop_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp) {
typedef typename std::add_lvalue_reference<Compare>::type compare_ref;
sprout::detail::pop_heap<compare_ref>(first, last, comp, last - first);
}
template<typename RandomAccessIterator>
inline SPROUT_CXX14_CONSTEXPR void
pop_heap(RandomAccessIterator first, RandomAccessIterator last) {
sprout::pop_heap(
first, last,
NS_SSCRISK_CEL_OR_SPROUT::less<typename std::iterator_traits<RandomAccessIterator>::value_type>()
);
}
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_CXX14_POP_HEAP_HPP