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add C++14 constexpr set/heap/permutation algorithms

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bolero-MURAKAMI 2014-04-06 18:37:06 +09:00
parent ecccb58042
commit 098dd1721e
13 changed files with 649 additions and 11 deletions
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53
sprout/algorithm/cxx14/make_heap.hpp Normal file
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/*=============================================================================
Copyright (c) 2011-2014 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_MAKE_HEAP_HPP
#define SPROUT_ALGORITHM_CXX14_MAKE_HEAP_HPP
#include <iterator>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/algorithm/cxx14/detail/heap_tool.hpp>
#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
namespace sprout {
namespace detail {
template<typename Compare, typename RandomAccessIterator>
inline SPROUT_CXX14_CONSTEXPR void
make_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp) {
typedef typename std::iterator_traits<RandomAccessIterator>::difference_type difference_type;
difference_type len = last - first;
if (len > 1) {
last = first;
++last;
for (difference_type i = 1; i < len; ++i) {
sprout::detail::push_heap_back<Compare>(first, ++last, comp, i);
}
}
}
} // namespace detail
//
// 25.4.6.3 make_heap
//
template<typename RandomAccessIterator, typename Compare>
inline SPROUT_CXX14_CONSTEXPR void
make_heap(RandomAccessIterator first, RandomAccessIterator last, Compare comp) {
typedef typename std::add_lvalue_reference<Compare>::type compare_ref;
sprout::detail::make_heap<compare_ref>(first, last, comp);
}
template<typename RandomAccessIterator>
inline SPROUT_CXX14_CONSTEXPR void
make_heap(RandomAccessIterator first, RandomAccessIterator last) {
sprout::make_heap(
first, last,
NS_SSCRISK_CEL_OR_SPROUT::less<typename std::iterator_traits<RandomAccessIterator>::value_type>()
);
}
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_CXX14_MAKE_HEAP_HPP