Sprout/sprout/algorithm/equal_range.hpp
2013-01-11 03:17:06 +09:00

38 lines
1.3 KiB
C++

#ifndef SPROUT_ALGORITHM_EQUAL_RANGE_HPP
#define SPROUT_ALGORITHM_EQUAL_RANGE_HPP
#include <iterator>
#include <sprout/config.hpp>
#include <sprout/algorithm/lower_bound.hpp>
#include <sprout/algorithm/upper_bound.hpp>
#include <sprout/utility/pair.hpp>
#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
namespace sprout {
// Copyright (C) 2011 RiSK (sscrisk)
// 25.4.3.3 equal_range
//
// recursion depth:
// O(log N)
//
template<typename ForwardIterator, typename T, typename Compare>
inline SPROUT_CONSTEXPR sprout::pair<ForwardIterator, ForwardIterator>
equal_range(ForwardIterator first, ForwardIterator last, T const& value, Compare comp) {
return sprout::pair<ForwardIterator, ForwardIterator>{
sprout::lower_bound(first, last, value, comp),
sprout::upper_bound(first, last, value, comp)
};
}
template<typename ForwardIterator, typename T>
inline SPROUT_CONSTEXPR sprout::pair<ForwardIterator, ForwardIterator>
equal_range(ForwardIterator first, ForwardIterator last, T const& value) {
return sprout::equal_range(
first, last, value,
NS_SSCRISK_CEL_OR_SPROUT::less<typename std::iterator_traits<ForwardIterator>::value_type>()
);
}
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_EQUAL_RANGE_HPP