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/* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 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() {
igraph_vector_t outseq, inseq;
igraph_bool_t result;
/***** Testing igraph_is_degree_sequence *****/
/* Valid undirected degree sequence */
igraph_vector_init_int_end(&outseq, -1, 3, 3, 3, 3, 3, 3, 3, 3, -1);
igraph_is_degree_sequence(&outseq, 0, &result);
if (!result)
return 1;
igraph_vector_destroy(&outseq);
/* Undirected degree sequence with negative degree */
igraph_vector_init_int_end(&outseq, -1, 3, -2, 3, 3, 3, 3, 3, 3, -1);
igraph_is_degree_sequence(&outseq, 0, &result);
if (result)
return 2;
igraph_vector_destroy(&outseq);
/* Undirected degree sequence with uneven sum */
igraph_vector_init_int_end(&outseq, -1, 3, 3, 3, 3, 3, 3, 3, -1);
igraph_is_degree_sequence(&outseq, 0, &result);
if (result)
return 3;
igraph_vector_destroy(&outseq);
/* Valid directed degree sequences */
igraph_vector_init_int_end(&outseq, -1, 0, 2, 3, 0, 4, 3, 1, 3, 4, 2, -1);
igraph_vector_init_int_end(&inseq, -1, 0, 3, 1, 3, 2, 4, 4, 1, 3, 1, -1);
igraph_is_degree_sequence(&outseq, &inseq, &result);
if (!result)
return 4;
igraph_vector_destroy(&outseq);
igraph_vector_destroy(&inseq);
/* Directed degree sequence with negative degree */
igraph_vector_init_int_end(&outseq, -1, 0, 2, 3, 0, 4, 3, 1, 3, 4, 2, -1);
igraph_vector_init_int_end(&inseq, -1, 0, 3, 1, -7, 2, 4, 4, 1, 3, 1, -1);
igraph_is_degree_sequence(&outseq, &inseq, &result);
if (result)
return 5;
igraph_vector_destroy(&outseq);
igraph_vector_destroy(&inseq);
/* Directed degree sequence with different lengths */
igraph_vector_init_int_end(&outseq, -1, 0, 2, 3, 0, 4, 3, 1, 3, 4, 2, -1);
igraph_vector_init_int_end(&inseq, -1, 0, 3, 1, 2, 4, 4, 1, 3, 1, -1);
igraph_is_degree_sequence(&outseq, &inseq, &result);
if (result)
return 5;
igraph_vector_destroy(&outseq);
igraph_vector_destroy(&inseq);
/* Directed degree sequence with different sums */
igraph_vector_init_int_end(&outseq, -1, 0, 2, 3, 0, 4, 3, 1, 3, 4, 2, -1);
igraph_vector_init_int_end(&inseq, -1, 0, 3, 1, 2, 2, 4, 4, 1, 3, 1, -1);
igraph_is_degree_sequence(&outseq, &inseq, &result);
if (result)
return 6;
igraph_vector_destroy(&outseq);
igraph_vector_destroy(&inseq);
/***** Testing igraph_is_graphical_degree_sequence *****/
/* Valid undirected graphical degree sequence */
igraph_vector_init_int_end(&outseq, -1, 3, 3, 3, 3, 3, 3, 3, 3, -1);
igraph_is_graphical_degree_sequence(&outseq, 0, &result);
if (!result)
return 7;
igraph_vector_destroy(&outseq);
/* Another valid undirected graphical degree sequence */
igraph_vector_init_int_end(&outseq, -1, 4, 7, 4, 7, 7, 8, 9, 9, 4, 6, 5, -1);
igraph_is_graphical_degree_sequence(&outseq, 0, &result);
if (!result)
return 8;
igraph_vector_destroy(&outseq);
/* Valid undirected degree sequence but not graphical */
igraph_vector_init_int_end(&outseq, -1, 3, 3, -1);
igraph_is_graphical_degree_sequence(&outseq, 0, &result);
if (result)
return 9;
igraph_vector_destroy(&outseq);
/* Valid directed graphical degree sequence */
igraph_vector_init_int_end(&inseq, -1, 3, 3, 3, 3, 3, 3, 3, 3, 3, -1);
igraph_vector_init_int_end(&outseq, -1, 3, 3, 3, 3, 3, 3, 3, 3, 3, -1);
igraph_is_graphical_degree_sequence(&outseq, &inseq, &result);
if (!result)
return 10;
igraph_vector_destroy(&outseq);
igraph_vector_destroy(&inseq);
/* Another valid directed graphical degree sequence */
igraph_vector_init_int_end(&inseq, -1, 1, 3, 2, 1, 3, 4, 3, 3, 1, 3, -1);
igraph_vector_init_int_end(&outseq, -1, 4, 1, 2, 3, 2, 3, 2, 3, 2, 2, -1);
igraph_is_graphical_degree_sequence(&outseq, &inseq, &result);
if (!result)
return 11;
igraph_vector_destroy(&outseq);
igraph_vector_destroy(&inseq);
/* Yet another valid directed graphical degree sequence */
igraph_vector_init_int_end(&inseq, -1, 7, 4, 6, 4, 7, 8, 8, 8, 7, 4, -1);
igraph_vector_init_int_end(&outseq, -1, 8, 5, 6, 8, 6, 6, 5, 7, 5, 7, -1);
igraph_is_graphical_degree_sequence(&outseq, &inseq, &result);
if (!result)
return 12;
igraph_vector_destroy(&outseq);
igraph_vector_destroy(&inseq);
return 0;
}
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