boost/detail/is_sorted.hpp
/*==============================================================================
Copyright (c) 2010-2011 Bryce Lelbach
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 BOOST_DETAIL_SORTED_HPP
#define BOOST_DETAIL_SORTED_HPP
#include <boost/detail/iterator.hpp>
#include <functional>
namespace boost {
namespace detail {
template<class Iterator, class Comp>
inline Iterator is_sorted_until (Iterator first, Iterator last, Comp c) {
if (first == last)
return last;
Iterator it = first; ++it;
for (; it != last; first = it, ++it)
if (c(*it, *first))
return it;
return it;
}
template<class Iterator>
inline Iterator is_sorted_until (Iterator first, Iterator last) {
typedef typename boost::detail::iterator_traits<Iterator>::value_type
value_type;
typedef std::less<value_type> c;
return ::boost::detail::is_sorted_until(first, last, c());
}
template<class Iterator, class Comp>
inline bool is_sorted (Iterator first, Iterator last, Comp c) {
return ::boost::detail::is_sorted_until(first, last, c) == last;
}
template<class Iterator>
inline bool is_sorted (Iterator first, Iterator last) {
return ::boost::detail::is_sorted_until(first, last) == last;
}
} // detail
} // boost
#endif // BOOST_DETAIL_SORTED_HPP
