1 /* -*- mode: C -*- */
2 /*
3 IGraph library.
4 Copyright (C) 2007-2012 Gabor Csardi <csardi.gabor@gmail.com>
5 334 Harvard st, Cambridge MA, 02139 USA
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 02110-1301 USA
21
22 */
23
24 #include <igraph.h>
25
main()26 int main() {
27
28 igraph_t g, g2;
29 igraph_bool_t iso;
30
31 // Franklin graph
32 igraph_lcf(&g, 12, 5, -5, 6, 0);
33 igraph_famous(&g2, "franklin");
34
35 igraph_isomorphic_vf2(&g, &g2,
36 /*vertex.color1=*/ 0, /*vertex.color2=*/ 0,
37 /*edge.color1=*/ 0, /*edge.color2=*/ 0,
38 &iso, 0, 0, 0, 0, 0);
39 if (!iso) {
40 printf("Failure: Franklin\n");
41 return 1;
42 }
43
44 igraph_destroy(&g);
45 igraph_destroy(&g2);
46
47 // [3, -2]^4, n=8
48 igraph_lcf(&g, 8, 3, -2, 4, 0);
49
50 if (igraph_ecount(&g) != 16) {
51 printf("Failure: [3, -2]^4, n=8\n");
52 return 1;
53 }
54
55 igraph_destroy(&g);
56
57 // [2, -2]^2, n=2
58 igraph_lcf(&g, 2, 2, -2, 2, 0);
59
60 if (igraph_ecount(&g) != 1) {
61 printf("Failure: [2, -2]^2, n=2\n");
62 return 1;
63 }
64
65 igraph_destroy(&g);
66
67 // [2]^2, n=2
68 igraph_lcf(&g, 2, 2, 2, 0);
69
70 if (igraph_ecount(&g) != 1) {
71 printf("Failure: [2]^2, n=2\n");
72 return 1;
73 }
74
75 igraph_destroy(&g);
76
77 // Regression test for bug #996
78 igraph_lcf(&g, 0, 0);
79 if (igraph_vcount(&g) != 0 || igraph_ecount(&g) != 0) {
80 printf("Failure: regression test for #996\n");
81 return 1;
82 }
83
84 igraph_destroy(&g);
85
86 return 0;
87 }
88