Abdelrahman Said
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/*
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igraph library.
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Copyright (C) 2010-2012 Gabor Csardi <csardi.gabor@gmail.com>
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334 Harvard st, Cambridge MA, 02139 USA
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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#include <igraph.h>
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int main(void) {
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igraph_matrix_t mat, mat2, mat3;
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igraph_sparsemat_t spmat, spmat2;
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/* Initialize the library. */
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igraph_setup();
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igraph_rng_seed(igraph_rng_default(), 42);
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#define NROW 10
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#define NCOL 7
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#define NUM_NONZEROS 15
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igraph_matrix_init(&mat, NROW, NCOL);
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for (igraph_int_t i = 0; i < NUM_NONZEROS; i++) {
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igraph_int_t r = igraph_rng_get_integer(igraph_rng_default(), 0, NROW - 1);
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igraph_int_t c = igraph_rng_get_integer(igraph_rng_default(), 0, NCOL - 1);
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igraph_real_t val = igraph_rng_get_integer(igraph_rng_default(), 1, 10);
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MATRIX(mat, r, c) = val;
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}
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igraph_matrix_as_sparsemat(&spmat, &mat, /*tol=*/ 1e-14);
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igraph_matrix_init(&mat2, 0, 0);
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igraph_sparsemat_as_matrix(&mat2, &spmat);
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if (!igraph_matrix_all_e(&mat, &mat2)) {
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return 1;
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}
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igraph_sparsemat_compress(&spmat, &spmat2);
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igraph_matrix_init(&mat3, 0, 0);
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igraph_sparsemat_as_matrix(&mat3, &spmat2);
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if (!igraph_matrix_all_e(&mat, &mat3)) {
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return 2;
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}
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igraph_matrix_destroy(&mat);
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igraph_matrix_destroy(&mat2);
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igraph_matrix_destroy(&mat3);
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igraph_sparsemat_destroy(&spmat);
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igraph_sparsemat_destroy(&spmat2);
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return 0;
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}
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