|
#ifndef BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED
|
#define BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED
|
|
// Copyright Aleksey Gurtovoy 2000-2004
|
//
|
// 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)
|
//
|
// See http://www.boost.org/libs/mpl for documentation.
|
|
// $Id$
|
// $Date$
|
// $Revision$
|
|
#include <boost/mpl/less.hpp>
|
#include <boost/mpl/iter_fold.hpp>
|
#include <boost/mpl/begin_end.hpp>
|
#include <boost/mpl/if.hpp>
|
#include <boost/mpl/deref.hpp>
|
#include <boost/mpl/apply.hpp>
|
#include <boost/mpl/aux_/common_name_wknd.hpp>
|
#include <boost/mpl/aux_/na_spec.hpp>
|
|
namespace boost { namespace mpl {
|
|
BOOST_MPL_AUX_COMMON_NAME_WKND(max_element)
|
|
namespace aux {
|
|
template< typename Predicate >
|
struct select_max
|
{
|
template< typename OldIterator, typename Iterator >
|
struct apply
|
{
|
typedef typename apply2<
|
Predicate
|
, typename deref<OldIterator>::type
|
, typename deref<Iterator>::type
|
>::type condition_;
|
|
typedef typename if_<
|
condition_
|
, Iterator
|
, OldIterator
|
>::type type;
|
};
|
};
|
|
} // namespace aux
|
|
|
template<
|
typename BOOST_MPL_AUX_NA_PARAM(Sequence)
|
, typename Predicate = less<_,_>
|
>
|
struct max_element
|
: iter_fold<
|
Sequence
|
, typename begin<Sequence>::type
|
, protect< aux::select_max<Predicate> >
|
>
|
{
|
};
|
|
BOOST_MPL_AUX_NA_SPEC(1, max_element)
|
|
}}
|
|
#endif // BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED
|
