Sprout/sprout/algorithm/next_difference.hpp
2016-02-25 18:48:28 +09:00

48 lines
1.7 KiB
C++

/*=============================================================================
Copyright (c) 2011-2016 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_NEXT_DIFFERENCE_HPP
#define SPROUT_ALGORITHM_NEXT_DIFFERENCE_HPP
#include <sprout/config.hpp>
#include <sprout/iterator/operation.hpp>
#include <sprout/functional/less.hpp>
#include <sprout/utility/pair/pair.hpp>
#include <sprout/algorithm/find_difference.hpp>
namespace sprout {
//
// next_difference
//
// recursion depth:
// O(log(N1+N2))
//
template<typename InputIterator1, typename InputIterator2, typename Compare>
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, InputIterator2>
next_difference(
InputIterator1 first1, InputIterator1 last1,
InputIterator2 first2, InputIterator2 last2,
Compare comp
)
{
typedef sprout::pair<InputIterator1, InputIterator2> type;
return first1 == last1 ? type(last1, last2)
: sprout::find_difference(sprout::next(first1), last1, first2, last2, comp)
;
}
template<typename InputIterator1, typename InputIterator2>
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, InputIterator2>
next_difference(
InputIterator1 first1, InputIterator1 last1,
InputIterator2 first2, InputIterator2 last2
)
{
return sprout::next_difference(first1, last1, first2, last2, sprout::less<>());
}
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_NEXT_DIFFERENCE_HPP