[1031] | 1 | // -*- c++ -*- |
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| 2 | #ifndef LEMON_LP_SOLVER_WRAPPER_H |
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| 3 | #define LEMON_LP_SOLVER_WRAPPER_H |
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| 4 | |
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| 5 | ///\ingroup misc |
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| 6 | ///\file |
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| 7 | ///\brief Dijkstra algorithm. |
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| 8 | |
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| 9 | // #include <stdio.h> |
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| 10 | #include <stdlib.h> |
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| 11 | // #include <stdio> |
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| 12 | //#include <stdlib> |
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| 13 | extern "C" { |
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| 14 | #include "glpk.h" |
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| 15 | } |
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| 16 | |
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| 17 | #include <iostream> |
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| 18 | #include <vector> |
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| 19 | #include <string> |
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| 20 | #include <list> |
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| 21 | #include <memory> |
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| 22 | #include <utility> |
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| 23 | |
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| 24 | //#include <sage_graph.h> |
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| 25 | //#include <lemon/list_graph.h> |
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| 26 | //#include <lemon/graph_wrapper.h> |
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| 27 | #include <lemon/invalid.h> |
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| 28 | //#include <bfs_dfs.h> |
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| 29 | //#include <stp.h> |
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| 30 | //#include <lemon/max_flow.h> |
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| 31 | //#include <augmenting_flow.h> |
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| 32 | //#include <iter_map.h> |
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| 33 | |
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| 34 | using std::cout; |
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| 35 | using std::cin; |
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| 36 | using std::endl; |
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| 37 | |
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| 38 | namespace lemon { |
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| 39 | |
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| 40 | |
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| 41 | /// \addtogroup misc |
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| 42 | /// @{ |
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| 43 | |
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| 44 | /// \brief A partitioned vector with iterable classes. |
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| 45 | /// |
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| 46 | /// This class implements a container in which the data is stored in an |
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| 47 | /// stl vector, the range is partitioned into sets and each set is |
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| 48 | /// doubly linked in a list. |
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| 49 | /// That is, each class is iterable by lemon iterators, and any member of |
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| 50 | /// the vector can bo moved to an other class. |
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| 51 | template <typename T> |
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| 52 | class IterablePartition { |
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| 53 | protected: |
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| 54 | struct Node { |
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| 55 | T data; |
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| 56 | int prev; //invalid az -1 |
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| 57 | int next; |
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| 58 | }; |
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| 59 | std::vector<Node> nodes; |
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| 60 | struct Tip { |
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| 61 | int first; |
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| 62 | int last; |
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| 63 | }; |
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| 64 | std::vector<Tip> tips; |
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| 65 | public: |
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| 66 | /// The classes are indexed by integers from \c 0 to \c classNum()-1. |
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| 67 | int classNum() const { return tips.size(); } |
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| 68 | /// This lemon style iterator iterates through a class. |
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| 69 | class ClassIt; |
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| 70 | /// Constructor. The number of classes is to be given which is fixed |
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| 71 | /// over the life of the container. |
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| 72 | /// The partition classes are indexed from 0 to class_num-1. |
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| 73 | IterablePartition(int class_num) { |
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| 74 | for (int i=0; i<class_num; ++i) { |
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| 75 | Tip t; |
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| 76 | t.first=t.last=-1; |
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| 77 | tips.push_back(t); |
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| 78 | } |
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| 79 | } |
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| 80 | protected: |
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| 81 | void befuz(ClassIt it, int class_id) { |
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| 82 | if (tips[class_id].first==-1) { |
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| 83 | if (tips[class_id].last==-1) { |
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| 84 | nodes[it.i].prev=nodes[it.i].next=-1; |
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| 85 | tips[class_id].first=tips[class_id].last=it.i; |
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| 86 | } |
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| 87 | } else { |
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| 88 | nodes[it.i].prev=tips[class_id].last; |
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| 89 | nodes[it.i].next=-1; |
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| 90 | nodes[tips[class_id].last].next=it.i; |
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| 91 | tips[class_id].last=it.i; |
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| 92 | } |
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| 93 | } |
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| 94 | void kifuz(ClassIt it, int class_id) { |
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| 95 | if (tips[class_id].first==it.i) { |
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| 96 | if (tips[class_id].last==it.i) { |
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| 97 | tips[class_id].first=tips[class_id].last=-1; |
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| 98 | } else { |
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| 99 | tips[class_id].first=nodes[it.i].next; |
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| 100 | nodes[nodes[it.i].next].prev=-1; |
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| 101 | } |
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| 102 | } else { |
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| 103 | if (tips[class_id].last==it.i) { |
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| 104 | tips[class_id].last=nodes[it.i].prev; |
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| 105 | nodes[nodes[it.i].prev].next=-1; |
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| 106 | } else { |
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| 107 | nodes[nodes[it.i].next].prev=nodes[it.i].prev; |
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| 108 | nodes[nodes[it.i].prev].next=nodes[it.i].next; |
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| 109 | } |
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| 110 | } |
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| 111 | } |
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| 112 | public: |
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| 113 | /// A new element with data \c t is pushed into the vector and into class |
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| 114 | /// \c class_id. |
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| 115 | ClassIt push_back(const T& t, int class_id) { |
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| 116 | Node n; |
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| 117 | n.data=t; |
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| 118 | nodes.push_back(n); |
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| 119 | int i=nodes.size()-1; |
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| 120 | befuz(i, class_id); |
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| 121 | return i; |
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| 122 | } |
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| 123 | /// A member is moved to an other class. |
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| 124 | void set(ClassIt it, int old_class_id, int new_class_id) { |
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| 125 | kifuz(it.i, old_class_id); |
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| 126 | befuz(it.i, new_class_id); |
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| 127 | } |
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| 128 | /// Returns the data pointed by \c it. |
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| 129 | T& operator[](ClassIt it) { return nodes[it.i].data; } |
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| 130 | /// Returns the data pointed by \c it. |
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| 131 | const T& operator[](ClassIt it) const { return nodes[it.i].data; } |
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| 132 | ///. |
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| 133 | class ClassIt { |
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| 134 | friend class IterablePartition; |
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| 135 | protected: |
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| 136 | int i; |
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| 137 | public: |
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| 138 | /// Default constructor. |
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| 139 | ClassIt() { } |
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| 140 | /// This constructor constructs an iterator which points |
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| 141 | /// to the member of th container indexed by the integer _i. |
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| 142 | ClassIt(const int& _i) : i(_i) { } |
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| 143 | /// Invalid constructor. |
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| 144 | ClassIt(const Invalid&) : i(-1) { } |
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| 145 | }; |
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| 146 | /// First member of class \c class_id. |
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| 147 | ClassIt& first(ClassIt& it, int class_id) const { |
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| 148 | it.i=tips[class_id].first; |
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| 149 | return it; |
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| 150 | } |
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| 151 | /// Next member. |
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| 152 | ClassIt& next(ClassIt& it) const { |
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| 153 | it.i=nodes[it.i].next; |
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| 154 | return it; |
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| 155 | } |
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| 156 | /// True iff the iterator is valid. |
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| 157 | bool valid(const ClassIt& it) const { return it.i!=-1; } |
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| 158 | }; |
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| 159 | |
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| 160 | /*! \e |
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| 161 | */ |
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[1048] | 162 | template <typename _Value> |
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[1031] | 163 | class LPSolverBase { |
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| 164 | public: |
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| 165 | /// \e |
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[1048] | 166 | typedef _Value Value; |
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| 167 | /// \e |
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[1031] | 168 | typedef IterablePartition<int>::ClassIt RowIt; |
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| 169 | /// \e |
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| 170 | typedef IterablePartition<int>::ClassIt ColIt; |
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[1074] | 171 | public: |
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[1031] | 172 | /// \e |
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| 173 | IterablePartition<int> row_iter_map; |
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| 174 | /// \e |
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| 175 | IterablePartition<int> col_iter_map; |
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| 176 | /// \e |
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[1074] | 177 | const int VALID_CLASS; |
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[1031] | 178 | /// \e |
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[1074] | 179 | const int INVALID_CLASS; |
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[1031] | 180 | public: |
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| 181 | /// \e |
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| 182 | LPSolverBase() : row_iter_map(2), |
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| 183 | col_iter_map(2), |
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[1074] | 184 | VALID_CLASS(0), INVALID_CLASS(1) { } |
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[1031] | 185 | /// \e |
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| 186 | virtual ~LPSolverBase() { } |
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| 187 | /// \e |
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| 188 | virtual void setMinimize() = 0; |
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| 189 | /// \e |
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| 190 | virtual void setMaximize() = 0; |
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[1074] | 191 | protected: |
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[1031] | 192 | /// \e |
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[1074] | 193 | virtual int _addRow() = 0; |
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[1031] | 194 | /// \e |
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[1074] | 195 | virtual int _addCol() = 0; |
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| 196 | public: |
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| 197 | /// \e |
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| 198 | RowIt addRow() { |
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| 199 | int i=_addRow(); |
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| 200 | RowIt row_it; |
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| 201 | row_iter_map.first(row_it, INVALID_CLASS); |
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| 202 | if (row_iter_map.valid(row_it)) { //van hasznalhato hely |
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| 203 | row_iter_map.set(row_it, INVALID_CLASS, VALID_CLASS); |
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| 204 | row_iter_map[row_it]=i; |
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| 205 | } else { //a cucc vegere kell inzertalni mert nincs szabad hely |
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| 206 | row_it=row_iter_map.push_back(i, VALID_CLASS); |
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| 207 | } |
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| 208 | return row_it; |
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| 209 | } |
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| 210 | /// \e |
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| 211 | ColIt addCol() { |
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| 212 | int i=_addCol(); |
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| 213 | ColIt col_it; |
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| 214 | col_iter_map.first(col_it, INVALID_CLASS); |
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| 215 | if (col_iter_map.valid(col_it)) { //van hasznalhato hely |
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| 216 | col_iter_map.set(col_it, INVALID_CLASS, VALID_CLASS); |
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| 217 | col_iter_map[col_it]=i; |
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| 218 | } else { //a cucc vegere kell inzertalni mert nincs szabad hely |
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| 219 | col_it=col_iter_map.push_back(i, VALID_CLASS); |
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| 220 | } |
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| 221 | return col_it; |
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| 222 | } |
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| 223 | /// \e |
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| 224 | virtual void setRowCoeffs(int i, |
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| 225 | std::vector<std::pair<int, double> > coeffs) = 0; |
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| 226 | /// \e |
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| 227 | virtual void setColCoeffs(int i, |
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| 228 | std::vector<std::pair<int, double> > coeffs) = 0; |
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[1031] | 229 | /// \e |
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| 230 | template <typename Begin, typename End> |
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| 231 | void setRowCoeffs(RowIt row_it, Begin begin, End end) { |
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[1074] | 232 | std::vector<std::pair<int, double> > coeffs; |
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[1031] | 233 | for ( ; begin!=end; ++begin) { |
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[1074] | 234 | coeffs.push_back(std:: |
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| 235 | make_pair(col_iter_map[begin->first], begin->second)); |
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[1031] | 236 | } |
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[1074] | 237 | setRowCoeffs(row_iter_map[row_it], coeffs); |
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[1031] | 238 | } |
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| 239 | /// \e |
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| 240 | template <typename Begin, typename End> |
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| 241 | void setColCoeffs(ColIt col_it, Begin begin, End end) { |
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[1074] | 242 | std::vector<std::pair<int, double> > coeffs; |
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[1031] | 243 | for ( ; begin!=end; ++begin) { |
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[1074] | 244 | coeffs.push_back(std:: |
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| 245 | make_pair(row_iter_map[begin->first], begin->second)); |
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[1031] | 246 | } |
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[1074] | 247 | setColCoeffs(col_iter_map[col_it], coeffs); |
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| 248 | } |
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| 249 | /// temporally, glpk style indexing |
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| 250 | //virtual void setRowCoeffs(RowIt row_it, int num, |
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| 251 | // int* indices, _Value* doubles) = 0; |
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| 252 | //pair<RowIt, _Value>-bol kell megadni egy std range-et |
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| 253 | /// \e |
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| 254 | // virtual void seColCoeffs(int i, |
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| 255 | // std::vector<std::pair<int, double> > coeffs) = 0; |
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| 256 | /// \e |
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| 257 | // template <typename Begin, typename End> |
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| 258 | // void setRowCoeffs(RowIt row_it, Begin begin, End end) { |
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| 259 | // int mem_length=1+colNum(); |
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| 260 | // int* indices = new int[mem_length]; |
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| 261 | // _Value* doubles = new _Value[mem_length]; |
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| 262 | // int length=0; |
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| 263 | // for ( ; begin!=end; ++begin) { |
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| 264 | // ++length; |
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| 265 | // indices[length]=col_iter_map[begin->first]; |
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| 266 | // doubles[length]=begin->second; |
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| 267 | // } |
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| 268 | // setRowCoeffs(row_it, length, indices, doubles); |
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| 269 | // delete [] indices; |
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| 270 | // delete [] doubles; |
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| 271 | // } |
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| 272 | /// temporally, glpk style indexing |
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| 273 | //virtual void setColCoeffs(ColIt col_it, int num, |
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| 274 | // int* indices, _Value* doubles) = 0; |
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| 275 | //pair<ColIt, _Value>-bol kell megadni egy std range-et |
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| 276 | /// \e |
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| 277 | // template <typename Begin, typename End> |
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| 278 | // void setColCoeffs(ColIt col_it, Begin begin, End end) { |
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| 279 | // int mem_length=1+rowNum(); |
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| 280 | // int* indices = new int[mem_length]; |
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| 281 | // _Value* doubles = new _Value[mem_length]; |
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| 282 | // int length=0; |
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| 283 | // for ( ; begin!=end; ++begin) { |
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| 284 | // ++length; |
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| 285 | // indices[length]=row_iter_map[begin->first]; |
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| 286 | // doubles[length]=begin->second; |
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| 287 | // } |
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| 288 | // setColCoeffs(col_it, length, indices, doubles); |
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| 289 | // delete [] indices; |
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| 290 | // delete [] doubles; |
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| 291 | // } |
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| 292 | protected: |
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| 293 | /// \e |
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| 294 | virtual void _eraseCol(int i) = 0; |
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| 295 | /// \e |
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| 296 | virtual void _eraseRow(int i) = 0; |
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| 297 | public: |
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| 298 | /// \e |
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| 299 | void eraseCol(const ColIt& col_it) { |
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| 300 | col_iter_map.set(col_it, VALID_CLASS, INVALID_CLASS); |
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| 301 | int cols[2]; |
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| 302 | cols[1]=col_iter_map[col_it]; |
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| 303 | _eraseCol(cols[1]); |
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| 304 | col_iter_map[col_it]=0; //glpk specifikus, de kell ez?? |
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| 305 | ColIt it; |
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| 306 | for (col_iter_map.first(it, VALID_CLASS); |
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| 307 | col_iter_map.valid(it); col_iter_map.next(it)) { |
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| 308 | if (col_iter_map[it]>cols[1]) --col_iter_map[it]; |
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| 309 | } |
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[1031] | 310 | } |
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| 311 | /// \e |
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[1074] | 312 | void eraseRow(const RowIt& row_it) { |
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| 313 | row_iter_map.set(row_it, VALID_CLASS, INVALID_CLASS); |
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| 314 | int rows[2]; |
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| 315 | rows[1]=row_iter_map[row_it]; |
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| 316 | _eraseRow(rows[1]); |
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| 317 | row_iter_map[row_it]=0; //glpk specifikus, de kell ez?? |
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| 318 | RowIt it; |
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| 319 | for (row_iter_map.first(it, VALID_CLASS); |
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| 320 | row_iter_map.valid(it); row_iter_map.next(it)) { |
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| 321 | if (row_iter_map[it]>rows[1]) --row_iter_map[it]; |
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| 322 | } |
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| 323 | } |
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[1031] | 324 | /// \e |
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| 325 | virtual void setColBounds(const ColIt& col_it, int bound_type, |
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[1048] | 326 | _Value lo, _Value up) =0; |
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[1031] | 327 | /// \e |
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[1048] | 328 | virtual _Value getObjCoef(const ColIt& col_it) = 0; |
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[1031] | 329 | /// \e |
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| 330 | virtual void setRowBounds(const RowIt& row_it, int bound_type, |
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[1048] | 331 | _Value lo, _Value up) = 0; |
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[1031] | 332 | /// \e |
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[1048] | 333 | virtual void setObjCoef(const ColIt& col_it, _Value obj_coef) = 0; |
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[1031] | 334 | /// \e |
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| 335 | virtual void solveSimplex() = 0; |
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| 336 | /// \e |
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| 337 | virtual void solvePrimalSimplex() = 0; |
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| 338 | /// \e |
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| 339 | virtual void solveDualSimplex() = 0; |
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| 340 | /// \e |
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[1048] | 341 | virtual _Value getPrimal(const ColIt& col_it) = 0; |
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[1031] | 342 | /// \e |
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[1048] | 343 | virtual _Value getObjVal() = 0; |
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[1031] | 344 | /// \e |
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| 345 | virtual int rowNum() const = 0; |
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| 346 | /// \e |
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| 347 | virtual int colNum() const = 0; |
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| 348 | /// \e |
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| 349 | virtual int warmUp() = 0; |
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| 350 | /// \e |
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| 351 | virtual void printWarmUpStatus(int i) = 0; |
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| 352 | /// \e |
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| 353 | virtual int getPrimalStatus() = 0; |
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| 354 | /// \e |
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| 355 | virtual void printPrimalStatus(int i) = 0; |
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| 356 | /// \e |
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| 357 | virtual int getDualStatus() = 0; |
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| 358 | /// \e |
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| 359 | virtual void printDualStatus(int i) = 0; |
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| 360 | /// Returns the status of the slack variable assigned to row \c row_it. |
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| 361 | virtual int getRowStat(const RowIt& row_it) = 0; |
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| 362 | /// \e |
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| 363 | virtual void printRowStatus(int i) = 0; |
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| 364 | /// Returns the status of the variable assigned to column \c col_it. |
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| 365 | virtual int getColStat(const ColIt& col_it) = 0; |
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| 366 | /// \e |
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| 367 | virtual void printColStatus(int i) = 0; |
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| 368 | }; |
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| 369 | |
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[1048] | 370 | |
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[1031] | 371 | /// \brief Wrappers for LP solvers |
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| 372 | /// |
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| 373 | /// This class implements a lemon wrapper for glpk. |
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| 374 | /// Later other LP-solvers will be wrapped into lemon. |
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| 375 | /// The aim of this class is to give a general surface to different |
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| 376 | /// solvers, i.e. it makes possible to write algorithms using LP's, |
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| 377 | /// in which the solver can be changed to an other one easily. |
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[1048] | 378 | class LPSolverWrapper : public LPSolverBase<double> { |
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[1031] | 379 | public: |
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[1048] | 380 | typedef LPSolverBase<double> Parent; |
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[1031] | 381 | |
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| 382 | public: |
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| 383 | /// \e |
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| 384 | LPX* lp; |
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| 385 | |
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| 386 | public: |
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| 387 | /// \e |
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[1048] | 388 | LPSolverWrapper() : Parent(), |
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[1031] | 389 | lp(lpx_create_prob()) { |
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| 390 | lpx_set_int_parm(lp, LPX_K_DUAL, 1); |
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| 391 | } |
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| 392 | /// \e |
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| 393 | ~LPSolverWrapper() { |
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| 394 | lpx_delete_prob(lp); |
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| 395 | } |
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| 396 | /// \e |
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| 397 | void setMinimize() { |
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| 398 | lpx_set_obj_dir(lp, LPX_MIN); |
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| 399 | } |
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| 400 | /// \e |
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| 401 | void setMaximize() { |
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| 402 | lpx_set_obj_dir(lp, LPX_MAX); |
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| 403 | } |
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[1074] | 404 | protected: |
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[1031] | 405 | /// \e |
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[1074] | 406 | int _addCol() { |
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| 407 | return lpx_add_cols(lp, 1); |
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[1031] | 408 | } |
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| 409 | /// \e |
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[1074] | 410 | int _addRow() { |
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| 411 | return lpx_add_rows(lp, 1); |
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| 412 | } |
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| 413 | public: |
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| 414 | using Parent::setRowCoeffs; |
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| 415 | /// \e |
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| 416 | virtual void setRowCoeffs(int i, |
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| 417 | std::vector<std::pair<int, double> > coeffs) { |
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| 418 | int mem_length=1+colNum(); |
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| 419 | int* indices = new int[mem_length]; |
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| 420 | double* doubles = new double[mem_length]; |
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| 421 | int length=0; |
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| 422 | for (std::vector<std::pair<int, double> >:: |
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| 423 | const_iterator it=coeffs.begin(); it!=coeffs.end(); ++it) { |
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| 424 | ++length; |
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| 425 | indices[length]=it->first; |
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| 426 | doubles[length]=it->second; |
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| 427 | std::cout << " " << indices[length] << " " |
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| 428 | << doubles[length] << std::endl; |
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[1031] | 429 | } |
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[1074] | 430 | std::cout << i << " " << length << std::endl; |
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| 431 | lpx_set_mat_row(lp, i, length, indices, doubles); |
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| 432 | delete [] indices; |
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| 433 | delete [] doubles; |
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[1031] | 434 | } |
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[1074] | 435 | /// \e |
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| 436 | virtual void setColCoeffs(int i, |
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| 437 | std::vector<std::pair<int, double> > coeffs) { |
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| 438 | int mem_length=1+rowNum(); |
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| 439 | int* indices = new int[mem_length]; |
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| 440 | double* doubles = new double[mem_length]; |
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| 441 | int length=0; |
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| 442 | for (std::vector<std::pair<int, double> >:: |
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| 443 | const_iterator it=coeffs.begin(); it!=coeffs.end(); ++it) { |
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| 444 | ++length; |
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| 445 | indices[length]=it->first; |
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| 446 | doubles[length]=it->second; |
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| 447 | } |
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| 448 | lpx_set_mat_col(lp, i, length, indices, doubles); |
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| 449 | delete [] indices; |
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| 450 | delete [] doubles; |
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[1031] | 451 | } |
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[1074] | 452 | // /// \e |
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| 453 | // /// temporally, glpk style indexing |
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| 454 | // virtual void setRowCoeffs(RowIt row_it, int num, |
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| 455 | // int* indices, _Value* doubles) = 0; |
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| 456 | // //pair<RowIt, _Value>-bol kell megadni egy std range-et |
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| 457 | // /// \e |
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| 458 | // template <typename Begin, typename End> |
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| 459 | // void setRowCoeffs(RowIt row_it, Begin begin, End end) { |
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| 460 | // int mem_length=1+colNum(); |
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| 461 | // int* indices = new int[mem_length]; |
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| 462 | // _Value* doubles = new _Value[mem_length]; |
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| 463 | // int length=0; |
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| 464 | // for ( ; begin!=end; ++begin) { |
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| 465 | // ++length; |
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| 466 | // indices[length]=col_iter_map[begin->first]; |
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| 467 | // doubles[length]=begin->second; |
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| 468 | // } |
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| 469 | // setRowCoeffs(row_it, length, indices, doubles); |
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| 470 | // delete [] indices; |
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| 471 | // delete [] doubles; |
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| 472 | // } |
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| 473 | // void setRowCoeffs(RowIt row_it, int length, |
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| 474 | // int* indices, double* doubles) { |
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| 475 | // lpx_set_mat_row(lp, row_iter_map[row_it], length, indices, doubles); |
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| 476 | // } |
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| 477 | // using Parent::setColCoeffs; |
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| 478 | // void setColCoeffs(ColIt col_it, int length, |
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| 479 | // int* indices, double* doubles) { |
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| 480 | // lpx_set_mat_col(lp, col_iter_map[col_it], length, indices, doubles); |
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| 481 | // } |
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[1031] | 482 | // //pair<RowIt, double>-bol kell megadni egy std range-et |
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| 483 | // /// \e |
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| 484 | // template <typename Begin, typename End> |
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| 485 | // void setColCoeffs(const ColIt& col_it, |
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| 486 | // Begin begin, End end) { |
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| 487 | // int mem_length=1+lpx_get_num_rows(lp); |
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| 488 | // int* indices = new int[mem_length]; |
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| 489 | // double* doubles = new double[mem_length]; |
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| 490 | // int length=0; |
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| 491 | // for ( ; begin!=end; ++begin) { |
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| 492 | // ++length; |
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| 493 | // indices[length]=row_iter_map[begin->first]; |
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| 494 | // doubles[length]=begin->second; |
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| 495 | // } |
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| 496 | // lpx_set_mat_col(lp, col_iter_map[col_it], length, indices, doubles); |
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| 497 | // delete [] indices; |
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| 498 | // delete [] doubles; |
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| 499 | // } |
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| 500 | // //pair<ColIt, double>-bol kell megadni egy std range-et |
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| 501 | // /// \e |
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| 502 | // template <typename Begin, typename End> |
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| 503 | // void setRowCoeffs(const RowIt& row_it, |
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| 504 | // Begin begin, End end) { |
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| 505 | // int mem_length=1+lpx_get_num_cols(lp); |
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| 506 | // int* indices = new int[mem_length]; |
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| 507 | // double* doubles = new double[mem_length]; |
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| 508 | // int length=0; |
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| 509 | // for ( ; begin!=end; ++begin) { |
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| 510 | // ++length; |
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| 511 | // indices[length]=col_iter_map[begin->first]; |
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| 512 | // doubles[length]=begin->second; |
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| 513 | // } |
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| 514 | // lpx_set_mat_row(lp, row_iter_map[row_it], length, indices, doubles); |
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| 515 | // delete [] indices; |
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| 516 | // delete [] doubles; |
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| 517 | // } |
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| 518 | /// \e |
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[1074] | 519 | protected: |
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| 520 | virtual void _eraseCol(int i) { |
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[1031] | 521 | int cols[2]; |
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[1074] | 522 | cols[1]=i; |
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[1031] | 523 | lpx_del_cols(lp, 1, cols); |
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| 524 | } |
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[1074] | 525 | virtual void _eraseRow(int i) { |
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[1031] | 526 | int rows[2]; |
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[1074] | 527 | rows[1]=i; |
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[1031] | 528 | lpx_del_rows(lp, 1, rows); |
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| 529 | } |
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[1074] | 530 | public: |
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[1031] | 531 | /// \e |
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| 532 | void setColBounds(const ColIt& col_it, int bound_type, |
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| 533 | double lo, double up) { |
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| 534 | lpx_set_col_bnds(lp, col_iter_map[col_it], bound_type, lo, up); |
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| 535 | } |
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| 536 | /// \e |
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| 537 | double getObjCoef(const ColIt& col_it) { |
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| 538 | return lpx_get_obj_coef(lp, col_iter_map[col_it]); |
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| 539 | } |
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| 540 | /// \e |
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| 541 | void setRowBounds(const RowIt& row_it, int bound_type, |
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| 542 | double lo, double up) { |
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| 543 | lpx_set_row_bnds(lp, row_iter_map[row_it], bound_type, lo, up); |
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| 544 | } |
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| 545 | /// \e |
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| 546 | void setObjCoef(const ColIt& col_it, double obj_coef) { |
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| 547 | lpx_set_obj_coef(lp, col_iter_map[col_it], obj_coef); |
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| 548 | } |
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| 549 | /// \e |
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| 550 | void solveSimplex() { lpx_simplex(lp); } |
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| 551 | /// \e |
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| 552 | void solvePrimalSimplex() { lpx_simplex(lp); } |
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| 553 | /// \e |
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| 554 | void solveDualSimplex() { lpx_simplex(lp); } |
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| 555 | /// \e |
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| 556 | double getPrimal(const ColIt& col_it) { |
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| 557 | return lpx_get_col_prim(lp, col_iter_map[col_it]); |
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| 558 | } |
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| 559 | /// \e |
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| 560 | double getObjVal() { return lpx_get_obj_val(lp); } |
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| 561 | /// \e |
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| 562 | int rowNum() const { return lpx_get_num_rows(lp); } |
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| 563 | /// \e |
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| 564 | int colNum() const { return lpx_get_num_cols(lp); } |
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| 565 | /// \e |
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| 566 | int warmUp() { return lpx_warm_up(lp); } |
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| 567 | /// \e |
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| 568 | void printWarmUpStatus(int i) { |
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| 569 | switch (i) { |
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| 570 | case LPX_E_OK: cout << "LPX_E_OK" << endl; break; |
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| 571 | case LPX_E_EMPTY: cout << "LPX_E_EMPTY" << endl; break; |
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| 572 | case LPX_E_BADB: cout << "LPX_E_BADB" << endl; break; |
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| 573 | case LPX_E_SING: cout << "LPX_E_SING" << endl; break; |
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| 574 | } |
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| 575 | } |
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| 576 | /// \e |
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| 577 | int getPrimalStatus() { return lpx_get_prim_stat(lp); } |
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| 578 | /// \e |
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| 579 | void printPrimalStatus(int i) { |
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| 580 | switch (i) { |
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| 581 | case LPX_P_UNDEF: cout << "LPX_P_UNDEF" << endl; break; |
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| 582 | case LPX_P_FEAS: cout << "LPX_P_FEAS" << endl; break; |
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| 583 | case LPX_P_INFEAS: cout << "LPX_P_INFEAS" << endl; break; |
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| 584 | case LPX_P_NOFEAS: cout << "LPX_P_NOFEAS" << endl; break; |
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| 585 | } |
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| 586 | } |
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| 587 | /// \e |
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| 588 | int getDualStatus() { return lpx_get_dual_stat(lp); } |
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| 589 | /// \e |
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| 590 | void printDualStatus(int i) { |
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| 591 | switch (i) { |
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| 592 | case LPX_D_UNDEF: cout << "LPX_D_UNDEF" << endl; break; |
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| 593 | case LPX_D_FEAS: cout << "LPX_D_FEAS" << endl; break; |
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| 594 | case LPX_D_INFEAS: cout << "LPX_D_INFEAS" << endl; break; |
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| 595 | case LPX_D_NOFEAS: cout << "LPX_D_NOFEAS" << endl; break; |
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| 596 | } |
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| 597 | } |
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| 598 | /// Returns the status of the slack variable assigned to row \c row_it. |
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| 599 | int getRowStat(const RowIt& row_it) { |
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| 600 | return lpx_get_row_stat(lp, row_iter_map[row_it]); |
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| 601 | } |
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| 602 | /// \e |
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| 603 | void printRowStatus(int i) { |
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| 604 | switch (i) { |
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| 605 | case LPX_BS: cout << "LPX_BS" << endl; break; |
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| 606 | case LPX_NL: cout << "LPX_NL" << endl; break; |
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| 607 | case LPX_NU: cout << "LPX_NU" << endl; break; |
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| 608 | case LPX_NF: cout << "LPX_NF" << endl; break; |
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| 609 | case LPX_NS: cout << "LPX_NS" << endl; break; |
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| 610 | } |
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| 611 | } |
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| 612 | /// Returns the status of the variable assigned to column \c col_it. |
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| 613 | int getColStat(const ColIt& col_it) { |
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| 614 | return lpx_get_col_stat(lp, col_iter_map[col_it]); |
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| 615 | } |
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| 616 | /// \e |
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| 617 | void printColStatus(int i) { |
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| 618 | switch (i) { |
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| 619 | case LPX_BS: cout << "LPX_BS" << endl; break; |
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| 620 | case LPX_NL: cout << "LPX_NL" << endl; break; |
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| 621 | case LPX_NU: cout << "LPX_NU" << endl; break; |
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| 622 | case LPX_NF: cout << "LPX_NF" << endl; break; |
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| 623 | case LPX_NS: cout << "LPX_NS" << endl; break; |
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| 624 | } |
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| 625 | } |
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| 626 | }; |
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| 627 | |
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| 628 | /// @} |
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| 629 | |
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| 630 | } //namespace lemon |
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| 631 | |
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| 632 | #endif //LEMON_LP_SOLVER_WRAPPER_H |
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