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
|
/* -*- 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 <time.h>
#include <stdlib.h>
int main() {
igraph_t g;
igraph_es_t es;
igraph_eit_t eit;
igraph_integer_t size;
/* DIRECTED */
igraph_ring(&g, 10, IGRAPH_DIRECTED, 0, 1);
igraph_es_path_small(&es, IGRAPH_DIRECTED, 0,1,2,3,4,5,6,7,8,9,0,1,2,3, -1);
igraph_eit_create(&g, es, &eit);
igraph_es_size(&g, &es, &size);
while (!IGRAPH_EIT_END(eit)) {
long int edge=IGRAPH_EIT_GET(eit);
igraph_integer_t from, to;
igraph_edge(&g, edge, &from, &to);
IGRAPH_EIT_NEXT(eit);
size--;
}
if (size != 0) return 1;
igraph_eit_destroy(&eit);
igraph_es_destroy(&es);
igraph_destroy(&g);
/* UNDIRECTED */
igraph_ring(&g, 10, IGRAPH_UNDIRECTED, 0, 1);
igraph_es_path_small(&es, IGRAPH_DIRECTED,
0,1,2,3,4,3,2,3,4,5,6,5,4,5,6,7,8,9,0,1,0,9, -1);
igraph_eit_create(&g, es, &eit);
while (!IGRAPH_EIT_END(eit)) {
long int edge=IGRAPH_EIT_GET(eit);
igraph_integer_t from, to;
igraph_edge(&g, edge, &from, &to);
IGRAPH_EIT_NEXT(eit);
}
igraph_eit_destroy(&eit);
igraph_es_destroy(&es);
igraph_destroy(&g);
return 0;
}
|
