1 | /* -*- C++ -*- |
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2 | * src/lemon/extended_pair.h - Part of LEMON, a generic C++ optimization library |
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3 | * |
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4 | * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 | * (Egervary Combinatorial Optimization Research Group, EGRES). |
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6 | * |
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7 | * Permission to use, modify and distribute this software is granted |
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8 | * provided that this copyright notice appears in all copies. For |
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9 | * precise terms see the accompanying LICENSE file. |
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10 | * |
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11 | * This software is provided "AS IS" with no warranty of any kind, |
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12 | * express or implied, and with no claim as to its suitability for any |
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13 | * purpose. |
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14 | * |
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15 | */ |
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16 | |
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17 | #ifndef LEMON_EXTENDED_PAIR_H |
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18 | #define LEMON_EXTENDED_PAIR_H |
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19 | |
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20 | template <typename T1, typename A1, typename T2, typename A2> |
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21 | struct extended_pair { |
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22 | typedef T1 first_type; |
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23 | typedef T2 second_type; |
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24 | |
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25 | extended_pair() : first(), second() {} |
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26 | |
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27 | extended_pair(A1 f, A2 s) : first(f), second(s) {} |
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28 | |
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29 | template <class Pair> |
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30 | extended_pair(const Pair& pair) : first(pair.first), second(pair.second) {} |
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31 | |
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32 | T1 first; |
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33 | T2 second; |
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34 | }; |
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35 | |
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36 | template <typename T1, typename T2, |
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37 | typename LA1, typename LA2, typename RA1, typename RA2> |
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38 | bool operator==(const extended_pair<T1, LA1, T2, LA2>& left, |
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39 | const extended_pair<T1, RA1, T2, RA2>& right) { |
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40 | return left.first == right.first && left.second == right.second; |
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41 | } |
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42 | |
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43 | template <typename T1, typename T2, |
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44 | typename LA1, typename LA2, typename RA1, typename RA2> |
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45 | bool operator!=(const extended_pair<T1, LA1, T2, LA2>& left, |
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46 | const extended_pair<T1, RA1, T2, RA2>& right) { |
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47 | return !(left == right); |
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48 | } |
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49 | |
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50 | template <typename T1, typename T2, |
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51 | typename LA1, typename LA2, typename RA1, typename RA2> |
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52 | bool operator<(const extended_pair<T1, LA1, T2, LA2>& left, |
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53 | const extended_pair<T1, RA1, T2, RA2>& right) { |
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54 | return left.first < right.first || |
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55 | (!(right.first<left.first) && left.second < right.second); |
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56 | } |
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57 | |
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58 | template <typename T1, typename T2, |
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59 | typename LA1, typename LA2, typename RA1, typename RA2> |
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60 | bool operator>(const extended_pair<T1, LA1, T2, LA2>& left, |
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61 | const extended_pair<T1, RA1, T2, RA2>& right) { |
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62 | return right < left; |
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63 | } |
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64 | |
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65 | template <typename T1, typename T2, |
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66 | typename LA1, typename LA2, typename RA1, typename RA2> |
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67 | bool operator<=(const extended_pair<T1, LA1, T2, LA2>& left, |
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68 | const extended_pair<T1, RA1, T2, RA2>& right) { |
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69 | return !(right > left); |
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70 | } |
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71 | |
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72 | template <typename T1, typename T2, |
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73 | typename LA1, typename LA2, typename RA1, typename RA2> |
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74 | bool operator>=(const extended_pair<T1, LA1, T2, LA2>& left, |
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75 | const extended_pair<T1, RA1, T2, RA2>& right) { |
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76 | return !(right < left); |
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77 | } |
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78 | |
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79 | |
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80 | #endif |
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