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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>
#define DIM1 10
#define DIM2 5
#define RANDINT(a) (igraph_rng_get_integer(igraph_rng_default(), 0, (a)))
int main(void) {
igraph_matrix_t mat;
igraph_sparsemat_t spmat, spmat2;
igraph_real_t m1, m2;
igraph_rng_seed(igraph_rng_default(), 42);
igraph_sparsemat_init(&spmat, DIM1, DIM2, 20);
igraph_sparsemat_entry(&spmat, 1, 2, -1.0);
igraph_sparsemat_entry(&spmat, 3, 2, 10.0);
for (int i = 0; i < 10; i++) {
igraph_sparsemat_entry(&spmat, RANDINT(DIM1 - 1), RANDINT(DIM2 - 1), 1.0);
}
igraph_sparsemat_entry(&spmat, 1, 2, -1.0);
igraph_sparsemat_entry(&spmat, 3, 2, 10.0);
igraph_sparsemat_compress(&spmat, &spmat2);
igraph_matrix_init(&mat, 0, 0);
igraph_sparsemat_as_matrix(&mat, &spmat2);
m1 = igraph_sparsemat_min(&spmat2);
m2 = igraph_matrix_min(&mat);
if (m1 != m2) {
printf("%f %f\n", m1, m2);
return 1;
}
m1 = igraph_sparsemat_max(&spmat2);
m2 = igraph_matrix_max(&mat);
if (m1 != m2) {
printf("%f %f\n", m1, m2);
return 2;
}
igraph_sparsemat_minmax(&spmat2, &m1, &m2);
if (m1 != igraph_matrix_min(&mat)) {
return 3;
}
if (m2 != igraph_matrix_max(&mat)) {
return 4;
}
igraph_matrix_destroy(&mat);
igraph_sparsemat_destroy(&spmat);
igraph_sparsemat_destroy(&spmat2);
return 0;
}
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