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/*
igraph library.
Copyright (C) 2006-2012 Gabor Csardi <csardi.gabor@gmail.com>
334 Harvard street, 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 g1, g2;
/* Initialize the library. */
igraph_setup();
/* complementer of the empty graph */
igraph_empty(&g1, 5, IGRAPH_DIRECTED);
igraph_complementer(&g2, &g1, IGRAPH_LOOPS);
igraph_write_graph_edgelist(&g2, stdout);
igraph_destroy(&g1);
igraph_destroy(&g2);
printf("---\n");
/* the same without loops */
igraph_empty(&g1, 5, IGRAPH_DIRECTED);
igraph_complementer(&g2, &g1, IGRAPH_NO_LOOPS);
igraph_write_graph_edgelist(&g2, stdout);
igraph_destroy(&g1);
igraph_destroy(&g2);
printf("---\n");
/* complementer of the full graph */
igraph_full(&g1, 5, IGRAPH_DIRECTED, IGRAPH_LOOPS);
igraph_complementer(&g2, &g1, IGRAPH_LOOPS);
if (igraph_ecount(&g2) != 0) {
return 1;
}
igraph_destroy(&g1);
igraph_destroy(&g2);
printf("---\n");
/* complementer of the full graph, results loops only */
igraph_full(&g1, 5, IGRAPH_DIRECTED, IGRAPH_NO_LOOPS);
igraph_complementer(&g2, &g1, IGRAPH_LOOPS);
igraph_write_graph_edgelist(&g2, stdout);
igraph_destroy(&g1);
igraph_destroy(&g2);
printf("---\n");
/**************
* undirected *
*************/
/* complementer of the empty graph */
igraph_empty(&g1, 5, IGRAPH_UNDIRECTED);
igraph_complementer(&g2, &g1, IGRAPH_LOOPS);
igraph_write_graph_edgelist(&g2, stdout);
igraph_destroy(&g1);
igraph_destroy(&g2);
printf("---\n");
/* the same without loops */
igraph_empty(&g1, 5, IGRAPH_UNDIRECTED);
igraph_complementer(&g2, &g1, IGRAPH_NO_LOOPS);
igraph_write_graph_edgelist(&g2, stdout);
igraph_destroy(&g1);
igraph_destroy(&g2);
printf("---\n");
/* complementer of the full graph */
igraph_full(&g1, 5, IGRAPH_UNDIRECTED, IGRAPH_LOOPS);
igraph_complementer(&g2, &g1, IGRAPH_LOOPS);
if (igraph_ecount(&g2) != 0) {
return 1;
}
igraph_destroy(&g1);
igraph_destroy(&g2);
printf("---\n");
/* complementer of the full graph, results loops only */
igraph_full(&g1, 5, IGRAPH_UNDIRECTED, IGRAPH_NO_LOOPS);
igraph_complementer(&g2, &g1, IGRAPH_LOOPS);
igraph_write_graph_edgelist(&g2, stdout);
igraph_destroy(&g1);
igraph_destroy(&g2);
return 0;
}
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