1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 2006-2012 Gabor Csardi <csardi.gabor@gmail.com>
334 Harvard st, Cambridge MA, 02139 USA
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include <igraph.h>
#include <stdlib.h>
void print_vector(igraph_vector_t *v) {
long int i, l=igraph_vector_size(v);
for (i=0; i<l; i++) {
printf(" %li", (long int) VECTOR(*v)[i]);
}
printf("\n");
}
int check_evecs(const igraph_t *graph, const igraph_vector_ptr_t *vecs,
const igraph_vector_ptr_t *evecs, int error_code) {
igraph_bool_t directed=igraph_is_directed(graph);
long int i, n=igraph_vector_ptr_size(vecs);
if (igraph_vector_ptr_size(evecs) != n) { exit(error_code+1); }
for (i=0; i<n; i++) {
igraph_vector_t *vvec=VECTOR(*vecs)[i];
igraph_vector_t *evec=VECTOR(*evecs)[i];
long int j, n2=igraph_vector_size(evec);
if (igraph_vector_size(vvec) == 0 && n2==0) { continue; }
if (igraph_vector_size(vvec) != n2+1) { exit(error_code+2); }
for (j=0; j<n2; j++) {
long int edge=VECTOR(*evec)[j];
long int from=VECTOR(*vvec)[j];
long int to=VECTOR(*vvec)[j+1];
if (directed) {
if (from != IGRAPH_FROM(graph, edge) ||
to != IGRAPH_TO (graph, edge)) {
exit(error_code);
}
} else {
long int from2=IGRAPH_FROM(graph, edge);
long int to2=IGRAPH_TO(graph, edge);
long int min1= from < to ? from : to;
long int max1= from < to ? to : from;
long int min2= from2 < to2 ? from2 : to2;
long int max2= from2 < to2 ? to2 : from2;
if (min1 != min2 || max1 != max2) { exit(error_code+3); }
}
}
}
return 0;
}
int main() {
igraph_t g;
igraph_vector_ptr_t vecs, evecs;
igraph_vector_long_t pred, inbound;
long int i;
igraph_vs_t vs;
igraph_ring(&g, 10, IGRAPH_DIRECTED, 0, 1);
igraph_vector_ptr_init(&vecs, 5);
igraph_vector_ptr_init(&evecs, 5);
igraph_vector_long_init(&pred, 0);
igraph_vector_long_init(&inbound, 0);
for (i=0; i<igraph_vector_ptr_size(&vecs); i++) {
VECTOR(vecs)[i] = calloc(1, sizeof(igraph_vector_t));
igraph_vector_init(VECTOR(vecs)[i], 0);
VECTOR(evecs)[i] = calloc(1, sizeof(igraph_vector_t));
igraph_vector_init(VECTOR(evecs)[i], 0);
}
igraph_vs_vector_small(&vs, 1, 3, 5, 2, 1, -1);
igraph_get_shortest_paths(&g, &vecs, &evecs, 0, vs, IGRAPH_OUT, &pred, &inbound);
check_evecs(&g, &vecs, &evecs, 10);
for (i=0; i<igraph_vector_ptr_size(&vecs); i++) {
print_vector(VECTOR(vecs)[i]);
igraph_vector_destroy(VECTOR(vecs)[i]);
free(VECTOR(vecs)[i]);
igraph_vector_destroy(VECTOR(evecs)[i]);
free(VECTOR(evecs)[i]);
}
igraph_vector_long_print(&pred);
igraph_vector_long_print(&inbound);
igraph_vector_ptr_destroy(&vecs);
igraph_vector_ptr_destroy(&evecs);
igraph_vector_long_destroy(&pred);
igraph_vector_long_destroy(&inbound);
igraph_vs_destroy(&vs);
igraph_destroy(&g);
if (!IGRAPH_FINALLY_STACK_EMPTY) return 1;
return 0;
}
|
