Bug fixes in min cost flow files.
Use enum type instead of static constants in NetworkSimplex to avoid
linker errors.
3 * This file is a part of LEMON, a generic C++ optimization library
5 * Copyright (C) 2003-2008
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
9 * Permission to use, modify and distribute this software is granted
10 * provided that this copyright notice appears in all copies. For
11 * precise terms see the accompanying LICENSE file.
13 * This software is provided "AS IS" with no warranty of any kind,
14 * express or implied, and with no claim as to its suitability for any
22 #include <lemon/math.h>
25 #include "test_tools.h"
26 #include <lemon/list_graph.h>
27 #include <lemon/max_matching.h>
30 using namespace lemon;
34 typedef ListUGraph Graph;
36 typedef Graph::Edge Edge;
37 typedef Graph::UEdgeIt UEdgeIt;
38 typedef Graph::IncEdgeIt IncEdgeIt;
39 typedef Graph::NodeIt NodeIt;
40 typedef Graph::Node Node;
45 std::vector<Graph::Node> nodes;
46 for (int i=0; i<13; ++i)
47 nodes.push_back(g.addNode());
49 g.addEdge(nodes[0], nodes[0]);
50 g.addEdge(nodes[6], nodes[10]);
51 g.addEdge(nodes[5], nodes[10]);
52 g.addEdge(nodes[4], nodes[10]);
53 g.addEdge(nodes[3], nodes[11]);
54 g.addEdge(nodes[1], nodes[6]);
55 g.addEdge(nodes[4], nodes[7]);
56 g.addEdge(nodes[1], nodes[8]);
57 g.addEdge(nodes[0], nodes[8]);
58 g.addEdge(nodes[3], nodes[12]);
59 g.addEdge(nodes[6], nodes[9]);
60 g.addEdge(nodes[9], nodes[11]);
61 g.addEdge(nodes[2], nodes[10]);
62 g.addEdge(nodes[10], nodes[8]);
63 g.addEdge(nodes[5], nodes[8]);
64 g.addEdge(nodes[6], nodes[3]);
65 g.addEdge(nodes[0], nodes[5]);
66 g.addEdge(nodes[6], nodes[12]);
68 MaxMatching<Graph> max_matching(g);
70 max_matching.startDense();
73 Graph::NodeMap<Node> mate(g,INVALID);
74 max_matching.mateMap(mate);
75 for(NodeIt v(g); v!=INVALID; ++v) {
76 if ( mate[v]!=INVALID ) ++s;
78 int size=int(s/2); //size will be used as the size of a maxmatching
80 for(NodeIt v(g); v!=INVALID; ++v) {
84 check ( size == max_matching.size(), "mate() returns a different size matching than max_matching.size()" );
86 Graph::NodeMap<MaxMatching<Graph>::DecompType> pos0(g);
87 max_matching.decomposition(pos0);
90 max_matching.startSparse();
92 max_matching.mateMap(mate);
93 for(NodeIt v(g); v!=INVALID; ++v) {
94 if ( mate[v]!=INVALID ) ++s;
96 check ( int(s/2) == size, "The size does not equal!" );
98 Graph::NodeMap<MaxMatching<Graph>::DecompType> pos1(g);
99 max_matching.decomposition(pos1);
103 max_matching.mateMap(mate);
104 for(NodeIt v(g); v!=INVALID; ++v) {
105 if ( mate[v]!=INVALID ) ++s;
107 check ( int(s/2) == size, "The size does not equal!" );
109 Graph::NodeMap<MaxMatching<Graph>::DecompType> pos2(g);
110 max_matching.decomposition(pos2);
114 max_matching.mateMap(mate);
115 for(NodeIt v(g); v!=INVALID; ++v) {
116 if ( mate[v]!=INVALID ) ++s;
118 check ( int(s/2) == size, "The size does not equal!" );
120 Graph::NodeMap<MaxMatching<Graph>::DecompType> pos(g);
121 max_matching.decomposition(pos);
123 bool ismatching=true;
124 for(NodeIt v(g); v!=INVALID; ++v) {
125 if ( mate[v]!=INVALID ) {
127 if (mate[u]!=v) ismatching=false;
130 check ( ismatching, "It is not a matching!" );
133 for(NodeIt v(g); v!=INVALID; ++v) {
134 if ( pos0[v] != pos1[v] || pos1[v]!=pos2[v] || pos2[v]!=pos[v] ) {
138 check ( coincide, "The decompositions do not coincide! " );
141 for(UEdgeIt e(g); e!=INVALID; ++e) {
142 if ( (pos[g.target(e)]==max_matching.C &&
143 pos[g.source(e)]==max_matching.D) ||
144 (pos[g.target(e)]==max_matching.D &&
145 pos[g.source(e)]==max_matching.C) )
148 check ( noedge, "There are edges between D and C!" );
151 Graph::NodeMap<bool> todo(g,true);
153 for(NodeIt v(g); v!=INVALID; ++v) {
154 if ( pos[v]==max_matching.D && todo[v] ) {
163 for(IncEdgeIt e(g,w); e!=INVALID; ++e) {
164 Node u=g.runningNode(e);
165 if ( pos[u]==max_matching.D && todo[u] ) {
172 if ( !(comp_size % 2) ) oddcomp=false;
175 check ( oddcomp, "A component of g[D] is not odd." );
178 for(NodeIt v(g); v!=INVALID; ++v) {
179 if ( pos[v]==max_matching.A ) ++barrier;
181 int expected_size=int( countNodes(g)-num_comp+barrier)/2;
182 check ( size==expected_size, "The size of the matching is wrong." );