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