King_DuckZ/Sprout
1
0
Fork 0
mirror of https://github.com/bolero-MURAKAMI/Sprout synced 2025-08-03 12:49:50 +00:00
Code Issues Releases Wiki Activity

porting sscrisk/CEL

Browse source
This commit is contained in:
bolero-MURAKAMI 2012-04-01 22:15:09 +09:00
parent ad60c8c530
commit db20f64991
181 changed files with 2531 additions and 607 deletions
Download patch file Download diff file Expand all files Collapse all files

40
sprout/detail/iterator_ext.hpp Normal file
View file

@ -0,0 +1,40 @@
#ifndef SPROUT_DETAIL_ITERATOR_EXT_HPP
#define SPROUT_DETAIL_ITERATOR_EXT_HPP
#include <iterator>
#include <sprout/config.hpp>
#include <sprout/iterator/operation.hpp>
namespace sprout {
namespace detail {
template<typename Iterator>
SPROUT_CONSTEXPR typename std::iterator_traits<Iterator>::difference_type bidirectional_distance_impl(
Iterator first1,
Iterator first2,
Iterator last,
typename std::iterator_traits<Iterator>::difference_type current = 1
)
{
return first1 == last ? current
: first2 == last ? -current
: sprout::detail::bidirectional_distance_impl(sprout::next(first1), sprout::prev(first2), last, current + 1)
;
}
//
// bidirectional_distance
//
template<typename Iterator>
SPROUT_CONSTEXPR typename std::iterator_traits<Iterator>::difference_type bidirectional_distance(
Iterator first,
Iterator last
)
{
return first == last ? 0
: sprout::detail::bidirectional_distance_impl(sprout::next(first), sprout::prev(first), last)
;
}
} // namespace detail
} // namespace sprout
#endif // #ifndef SPROUT_DETAIL_ITERATOR_EXT_HPP