48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
|
// (C) Copyright Herve Bronnimann 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)
|
||
|
|
|
||
|
|
/*
|
||
|
|
Revision history:
|
||
|
|
1 July 2004
|
||
|
|
Split the code into two headers to lessen dependence on
|
||
|
|
Boost.tuple. (Herve)
|
||
|
|
26 June 2004
|
||
|
|
Added the code for the boost minmax library. (Herve)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef BOOST_ALGORITHM_MINMAX_HPP
|
||
|
|
#define BOOST_ALGORITHM_MINMAX_HPP
|
||
|
|
|
||
|
|
/* PROPOSED STANDARD EXTENSIONS:
|
||
|
|
*
|
||
|
|
* minmax(a, b)
|
||
|
|
* Effect: (b<a) ? std::make_pair(b,a) : std::make_pair(a,b);
|
||
|
|
*
|
||
|
|
* minmax(a, b, comp)
|
||
|
|
* Effect: comp(b,a) ? std::make_pair(b,a) : std::make_pair(a,b);
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <boost/tuple/tuple.hpp> // for using pairs with boost::cref
|
||
|
|
#include <boost/ref.hpp>
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
tuple< T const&, T const& >
|
||
|
|
minmax(T const& a, T const& b) {
|
||
|
|
return (b<a) ? make_tuple(cref(b),cref(a)) : make_tuple(cref(a),cref(b));
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename T, class BinaryPredicate>
|
||
|
|
tuple< T const&, T const& >
|
||
|
|
minmax(T const& a, T const& b, BinaryPredicate comp) {
|
||
|
|
return comp(b,a) ? make_tuple(cref(b),cref(a)) : make_tuple(cref(a),cref(b));
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
#endif // BOOST_ALGORITHM_MINMAX_HPP
|