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porting sscrisk/CEL

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bolero-MURAKAMI 2012-04-01 22:15:09 +09:00
parent ad60c8c530
commit db20f64991
181 changed files with 2531 additions and 607 deletions
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33
sprout/algorithm/lower_bound.hpp Normal file
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#ifndef SPROUT_ALGORITHM_LOWER_BOUND_HPP
#define SPROUT_ALGORITHM_LOWER_BOUND_HPP
#include <sprout/config.hpp>
#include <sprout/iterator/operation.hpp>
#include HDR_ITERATOR_SSCRISK_CEL_OR_SPROUT
namespace sprout {
// Copyright (C) 2011 RiSK (sscrisk)
// 25.4.3.1 lower_bound
template<typename ForwardIterator, typename T>
SPROUT_CONSTEXPR ForwardIterator lower_bound(ForwardIterator first, ForwardIterator last, T const& value) {
return first == last ? last
: sprout::next(first) == last ? *first < value ? last : first
: *(first + NS_SSCRISK_CEL_OR_SPROUT::distance(first, last) / 2) < value
? sprout::lower_bound(first + NS_SSCRISK_CEL_OR_SPROUT::distance(first, last) / 2, last, value)
: sprout::lower_bound(first, first + NS_SSCRISK_CEL_OR_SPROUT::distance(first, last) / 2, value)
;
}
template<typename ForwardIterator, typename T, typename Compare>
SPROUT_CONSTEXPR ForwardIterator lower_bound(ForwardIterator first, ForwardIterator last, T const& value, Compare comp) {
return first == last ? last
: sprout::next(first) == last ? comp(*first, value) ? last : first
: comp(*(first + NS_SSCRISK_CEL_OR_SPROUT::distance(first, last) / 2), value)
? sprout::lower_bound(first + NS_SSCRISK_CEL_OR_SPROUT::distance(first, last) / 2, last, value, comp)
: sprout::lower_bound(first, first + NS_SSCRISK_CEL_OR_SPROUT::distance(first, last) / 2, value, comp)
;
}
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_LOWER_BOUND_HPP