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[algorithm.equal_range, etc] Change recursive function parameters from "Iter, Iter" to "Iter, length."

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This commit is contained in:
Mitsuru Kariya 2013-09-01 00:13:23 +09:00
parent bbeb2f1b4b
commit 5b13f3b8a2
5 changed files with 97 additions and 25 deletions
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34
sprout/detail/algorithm/lower_bound.hpp Normal file
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/*=============================================================================
Copyright (c) 2011-2013 Bolero MURAKAMI
Copyright (C) 2011 RiSK (sscrisk)
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_DETAIL_ALGORITHM_LOWER_BOUND_HPP
#define SPROUT_DETAIL_ALGORITHM_LOWER_BOUND_HPP
#include <iterator>
#include <sprout/config.hpp>
#include <sprout/iterator/next.hpp>
namespace sprout {
namespace detail {
template<typename ForwardIterator, typename T, typename Compare>
inline SPROUT_CONSTEXPR ForwardIterator
lower_bound(
ForwardIterator first, typename std::iterator_traits<ForwardIterator>::difference_type len,
T const& value, Compare comp
)
{
return len == 0 ? first
: comp(*sprout::next(first, len / 2), value)
? sprout::detail::lower_bound(sprout::next(first, len / 2 + 1), len - (len / 2 + 1), value, comp)
: sprout::detail::lower_bound(first, len / 2, value, comp)
;
}
} // namespace detail
} // namespace sprout
#endif // #ifndef SPROUT_DETAIL_ALGORITHM_LOWER_BOUND_HPP

34
sprout/detail/algorithm/upper_bound.hpp Normal file
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/*=============================================================================
Copyright (c) 2011-2013 Bolero MURAKAMI
Copyright (C) 2011 RiSK (sscrisk)
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_DETAIL_ALGORITHM_UPPER_BOUND_HPP
#define SPROUT_DETAIL_ALGORITHM_UPPER_BOUND_HPP
#include <iterator>
#include <sprout/config.hpp>
#include <sprout/iterator/next.hpp>
namespace sprout {
namespace detail {
template<typename ForwardIterator, typename T, typename Compare>
inline SPROUT_CONSTEXPR ForwardIterator
upper_bound(
ForwardIterator first, typename std::iterator_traits<ForwardIterator>::difference_type len,
T const& value, Compare comp
)
{
return len == 0 ? first
: comp(value, *sprout::next(first, len / 2))
? sprout::detail::upper_bound(first, len / 2, value, comp)
: sprout::detail::upper_bound(sprout::next(first, len / 2 + 1), len - (len / 2 + 1), value, comp)
;
}
} // namespace detail
} // namespace sprout
#endif // #ifndef SPROUT_DETAIL_ALGORITHM_UPPER_BOUND_HPP