/* -*- mode: C -*-  */
/* 
   IGraph library.
   Copyright (C) 2011-2012  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>

#define DIM 10

#define INT(a) (igraph_rng_get_integer(igraph_rng_default(), 0, (a)))

int main() {
  int runs=100;
  const int noelements=20;
  igraph_sparsemat_t A;
  int i;

  igraph_rng_seed(igraph_rng_default(), 42);

  for (; runs > 0; runs--) {

    igraph_sparsemat_init(&A, DIM, DIM, noelements * 2);    
    for (i=0; i<noelements; i++) {
      int row=INT(DIM-1);
      int col=INT(DIM-1);
      int val=INT(100);
      igraph_sparsemat_entry(&A, row, col, val);
      igraph_sparsemat_entry(&A, col, row, val);
    }
    if (!igraph_sparsemat_is_symmetric(&A)) { return 1; }
    igraph_sparsemat_destroy(&A);

    igraph_sparsemat_init(&A, DIM, DIM, noelements);
    for (i=0; i<noelements; i++) {
      igraph_sparsemat_entry(&A, INT(DIM-1), INT(DIM-1), INT(100));
    }
    if (igraph_sparsemat_is_symmetric(&A)) { return 2; }
    igraph_sparsemat_destroy(&A);

  }
    
  return 0;
}

