alpar@906: /* -*- C++ -*-
alpar@921:  * src/lemon/extended_pair.h - Part of LEMON, a generic C++ optimization library
alpar@906:  *
alpar@1164:  * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
alpar@906:  * (Egervary Combinatorial Optimization Research Group, EGRES).
alpar@906:  *
alpar@906:  * Permission to use, modify and distribute this software is granted
alpar@906:  * provided that this copyright notice appears in all copies. For
alpar@906:  * precise terms see the accompanying LICENSE file.
alpar@906:  *
alpar@906:  * This software is provided "AS IS" with no warranty of any kind,
alpar@906:  * express or implied, and with no claim as to its suitability for any
alpar@906:  * purpose.
alpar@906:  *
alpar@906:  */
alpar@906: 
alpar@921: #ifndef LEMON_EXTENDED_PAIR_H
alpar@921: #define LEMON_EXTENDED_PAIR_H
deba@782: 
deba@782: template <typename T1, typename A1, typename T2, typename A2>
deba@782: struct extended_pair {
deba@782:   typedef T1 first_type;
deba@782:   typedef T2 second_type;
deba@782: 
deba@782:   extended_pair() : first(), second() {}
deba@782: 
deba@782:   extended_pair(A1 f, A2 s) : first(f), second(s) {}
deba@782: 
deba@782:   template <class Pair>
deba@782:   extended_pair(const Pair& pair) : first(pair.first), second(pair.second) {}
deba@782: 
deba@782:   T1 first;
deba@782:   T2 second;
deba@782: };
deba@782: 
deba@782: template <typename T1, typename T2, 
deba@782: 	  typename LA1, typename LA2, typename RA1, typename RA2>
deba@782: bool operator==(const extended_pair<T1, LA1, T2, LA2>& left, 
deba@782: 		const extended_pair<T1, RA1, T2, RA2>& right) {
deba@782:   return left.first == right.first && left.second == right.second;
deba@782: }
deba@782: 
deba@782: template <typename T1, typename T2, 
deba@782: 	  typename LA1, typename LA2, typename RA1, typename RA2>
deba@782: bool operator!=(const extended_pair<T1, LA1, T2, LA2>& left, 
deba@782: 		const extended_pair<T1, RA1, T2, RA2>& right) {
deba@782:   return  !(left == right);
deba@782: }
deba@782: 
deba@782: template <typename T1, typename T2, 
deba@782: 	  typename LA1, typename LA2, typename RA1, typename RA2>
deba@782: bool operator<(const extended_pair<T1, LA1, T2, LA2>& left, 
deba@782: 		const extended_pair<T1, RA1, T2, RA2>& right) {
deba@897:   return left.first < right.first || 
deba@897:            (!(right.first<left.first) && left.second < right.second);
deba@782: }
deba@782: 
deba@782: template <typename T1, typename T2, 
deba@782: 	  typename LA1, typename LA2, typename RA1, typename RA2>
deba@782: bool operator>(const extended_pair<T1, LA1, T2, LA2>& left, 
deba@782: 		const extended_pair<T1, RA1, T2, RA2>& right) {
deba@782:   return right < left;
deba@782: }
deba@782: 
deba@782: template <typename T1, typename T2, 
deba@782: 	  typename LA1, typename LA2, typename RA1, typename RA2>
deba@782: bool operator<=(const extended_pair<T1, LA1, T2, LA2>& left, 
deba@782: 		const extended_pair<T1, RA1, T2, RA2>& right) {
deba@782:   return !(right > left);
deba@782: }
deba@782: 
deba@782: template <typename T1, typename T2, 
deba@782: 	  typename LA1, typename LA2, typename RA1, typename RA2>
deba@782: bool operator>=(const extended_pair<T1, LA1, T2, LA2>& left, 
deba@782: 		const extended_pair<T1, RA1, T2, RA2>& right) {
deba@782:   return !(right < left);
deba@782: }
deba@782: 
deba@782: 
deba@782: #endif