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/* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 2007-2012 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>
int main(void) {
igraph_t g;
igraph_real_t girth;
igraph_vector_int_t v;
igraph_vector_int_t circle;
igraph_integer_t chord[] = { 0, 50 };
igraph_ring(&g, 100, IGRAPH_UNDIRECTED, 0, 1);
igraph_vector_int_view(&v, chord, sizeof(chord) / sizeof(chord[0]));
igraph_add_edges(&g, &v, 0);
igraph_girth(&g, &girth, 0);
if (girth != 51) {
return 1;
}
igraph_destroy(&g);
/* Special case: null graph */
igraph_ring(&g, 0, IGRAPH_UNDIRECTED, 0, 1);
igraph_vector_int_init(&circle, 1);
VECTOR(circle)[0] = 2;
igraph_girth(&g, &girth, &circle);
if (girth != IGRAPH_INFINITY) {
return 2;
}
if (igraph_vector_int_size(&circle) != 0) {
return 3;
}
igraph_vector_int_destroy(&circle);
igraph_destroy(&g);
return 0;
}
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