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Sprout/sprout/algorithm/is_decreasing.hpp
bolero-MURAKAMI cb1077d247 add copyright
2013-08-08 18:54:33 +09:00

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/*=============================================================================
Copyright (c) 2011-2013 Bolero MURAKAMI
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_ALGORITHM_IS_DECREASING_HPP
#define SPROUT_ALGORITHM_IS_DECREASING_HPP
#include <iterator>
#include <sprout/config.hpp>
#include <sprout/algorithm/is_sorted.hpp>
#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
namespace sprout {
//
// is_decreasing
//
// recursion depth:
// O(log N)
//
template<typename ForwardIterator>
inline SPROUT_CONSTEXPR bool
is_decreasing(ForwardIterator first, ForwardIterator last) {
return sprout::is_sorted(
first, last,
NS_SSCRISK_CEL_OR_SPROUT::greater<typename std::iterator_traits<ForwardIterator>::value_type>()
);
}
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_IS_DECREASING_HPP