Chris@16: //  (C) Copyright Herve Bronnimann 2004.
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: /*
Chris@16:  Revision history:
Chris@16:    1 July 2004
Chris@16:       Split the code into two headers to lessen dependence on
Chris@16:       Boost.tuple. (Herve)
Chris@16:    26 June 2004
Chris@16:       Added the code for the boost minmax library. (Herve)
Chris@16: */
Chris@16: 
Chris@16: #ifndef BOOST_ALGORITHM_MINMAX_HPP
Chris@16: #define BOOST_ALGORITHM_MINMAX_HPP
Chris@16: 
Chris@16: /* PROPOSED STANDARD EXTENSIONS:
Chris@16:  *
Chris@16:  * minmax(a, b)
Chris@16:  * Effect: (b<a) ? std::make_pair(b,a) : std::make_pair(a,b);
Chris@16:  *
Chris@16:  * minmax(a, b, comp)
Chris@16:  * Effect: comp(b,a) ? std::make_pair(b,a) : std::make_pair(a,b);
Chris@16:  *
Chris@16:  */
Chris@16: 
Chris@16: #include <boost/tuple/tuple.hpp> // for using pairs with boost::cref
Chris@16: #include <boost/ref.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16:   template <typename T>
Chris@16:   tuple< T const&, T const& >
Chris@16:   minmax(T const& a, T const& b) {
Chris@16:     return (b<a) ? make_tuple(cref(b),cref(a)) : make_tuple(cref(a),cref(b));
Chris@16:   }
Chris@16: 
Chris@16:   template <typename T, class BinaryPredicate>
Chris@16:   tuple< T const&, T const& >
Chris@16:   minmax(T const& a, T const& b, BinaryPredicate comp) {
Chris@16:     return comp(b,a) ? make_tuple(cref(b),cref(a)) : make_tuple(cref(a),cref(b));
Chris@16:   }
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // BOOST_ALGORITHM_MINMAX_HPP