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