Chris@16: 
Chris@16: #ifndef BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED
Chris@16: #define BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED
Chris@16: 
Chris@16: // Copyright Aleksey Gurtovoy 2000-2004
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/mpl for documentation.
Chris@16: 
Chris@101: // $Id$
Chris@101: // $Date$
Chris@101: // $Revision$
Chris@16: 
Chris@16: #include <boost/mpl/less.hpp>
Chris@16: #include <boost/mpl/iter_fold.hpp>
Chris@16: #include <boost/mpl/begin_end.hpp>
Chris@16: #include <boost/mpl/if.hpp>
Chris@16: #include <boost/mpl/deref.hpp>
Chris@16: #include <boost/mpl/apply.hpp>
Chris@16: #include <boost/mpl/aux_/common_name_wknd.hpp>
Chris@16: #include <boost/mpl/aux_/na_spec.hpp>
Chris@16: 
Chris@16: namespace boost { namespace mpl {
Chris@16: 
Chris@16: BOOST_MPL_AUX_COMMON_NAME_WKND(max_element)
Chris@16: 
Chris@16: namespace aux {
Chris@16: 
Chris@16: template< typename Predicate >
Chris@16: struct select_max
Chris@16: {
Chris@16:     template< typename OldIterator, typename Iterator >
Chris@16:     struct apply
Chris@16:     {
Chris@16:         typedef typename apply2<
Chris@16:               Predicate
Chris@16:             , typename deref<OldIterator>::type
Chris@16:             , typename deref<Iterator>::type
Chris@16:             >::type condition_;
Chris@16: 
Chris@16:         typedef typename if_<
Chris@16:               condition_
Chris@16:             , Iterator
Chris@16:             , OldIterator
Chris@16:             >::type type;
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@16: } // namespace aux 
Chris@16: 
Chris@16: 
Chris@16: template<
Chris@16:       typename BOOST_MPL_AUX_NA_PARAM(Sequence)
Chris@16:     , typename Predicate = less<_,_>
Chris@16:     >
Chris@16: struct max_element
Chris@16:     : iter_fold<
Chris@16:           Sequence
Chris@16:         , typename begin<Sequence>::type
Chris@16:         , protect< aux::select_max<Predicate> >
Chris@16:         >
Chris@16: {
Chris@16: };
Chris@16: 
Chris@16: BOOST_MPL_AUX_NA_SPEC(1, max_element)
Chris@16: 
Chris@16: }}
Chris@16: 
Chris@16: #endif // BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED