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/* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 2010-2012 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 <igraph_sparsemat.h>
int main() {
igraph_matrix_t mat, mat2, mat3;
igraph_sparsemat_t spmat, spmat2;
int i;
igraph_rng_seed(igraph_rng_default(), 42);
#define NROW 10
#define NCOL 7
#define NZERO 15
igraph_matrix_init(&mat, NROW, NCOL);
for (i=0; i<NZERO; i++) {
int r=igraph_rng_get_integer(igraph_rng_default(), 0, NROW-1);
int c=igraph_rng_get_integer(igraph_rng_default(), 0, NCOL-1);
igraph_real_t val=igraph_rng_get_integer(igraph_rng_default(), 1, 10);
MATRIX(mat, r, c) = val;
}
igraph_matrix_as_sparsemat(&spmat, &mat, /*tol=*/ 1e-14);
igraph_matrix_init(&mat2, 0, 0);
igraph_sparsemat_as_matrix(&mat2, &spmat);
if (!igraph_matrix_all_e(&mat, &mat2)) { return 1; }
igraph_sparsemat_compress(&spmat, &spmat2);
igraph_matrix_init(&mat3, 0, 0);
igraph_sparsemat_as_matrix(&mat3, &spmat2);
if (!igraph_matrix_all_e(&mat, &mat3)) { return 2; }
igraph_matrix_destroy(&mat);
igraph_matrix_destroy(&mat2);
igraph_matrix_destroy(&mat3);
igraph_sparsemat_destroy(&spmat);
igraph_sparsemat_destroy(&spmat2);
return 0;
}
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