Sprout/sprout/algorithm/max_element.hpp
2012-10-06 13:53:07 +09:00

43 lines
1.3 KiB
C++

#ifndef SPROUT_ALGORITHM_MAX_ELEMENT_HPP
#define SPROUT_ALGORITHM_MAX_ELEMENT_HPP
#include <iterator>
#include <sprout/config.hpp>
#include <sprout/iterator/operation.hpp>
#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
namespace sprout {
// Copyright (C) 2011 RiSK (sscrisk)
namespace detail {
template<typename ForwardIterator, typename Compare>
inline SPROUT_CONSTEXPR ForwardIterator
max_element_impl(
ForwardIterator first, ForwardIterator last, Compare comp,
ForwardIterator max
)
{
return first == last ? max
: sprout::detail::max_element_impl(sprout::next(first), last, comp, comp(*max, *first) ? first : max)
;
}
} // namespace detail
// 25.4.7 Minimum and maximum
template<typename ForwardIterator, typename Compare>
inline SPROUT_CONSTEXPR ForwardIterator
max_element(ForwardIterator first, ForwardIterator last, Compare comp) {
return sprout::detail::max_element_impl(first, last, comp, first);
}
template<typename ForwardIterator>
inline SPROUT_CONSTEXPR ForwardIterator
max_element(ForwardIterator first, ForwardIterator last) {
return sprout::max_element(
first, last,
NS_SSCRISK_CEL_OR_SPROUT::less<typename std::iterator_traits<ForwardIterator>::value_type>()
);
}
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_MAX_ELEMENT_HPP