Abdelrahman Said
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/*
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igraph library.
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Copyright (C) 2011-2012 Gabor Csardi <csardi.gabor@gmail.com>
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334 Harvard street, 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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#include "test_utilities.h"
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#define DIM1 10
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#define DIM2 5
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#define DIM3 6
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#define INT(a) (igraph_rng_get_integer(igraph_rng_default(), 0, (a)))
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#define REAL() (igraph_rng_get_normal(igraph_rng_default(), 0, 1))
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int main(void) {
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igraph_sparsemat_t sA, sB, sC;
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igraph_matrix_t A1, A2, A3, B, C;
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int i;
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igraph_rng_seed(igraph_rng_default(), 42);
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igraph_sparsemat_init(&sA, DIM1, DIM2, 20);
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for (i = 0; i < 10; i++) {
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igraph_sparsemat_entry(&sA, INT(DIM1 - 1), INT(DIM2 - 1), REAL());
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}
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igraph_sparsemat_compress(&sA, &sB);
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igraph_sparsemat_destroy(&sA);
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igraph_sparsemat_init(&sA, DIM2, DIM3, 20);
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for (i = 0; i < 10; i++) {
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igraph_sparsemat_entry(&sA, INT(DIM2 - 1), INT(DIM3 - 1), REAL());
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}
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igraph_sparsemat_compress(&sA, &sC);
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igraph_sparsemat_destroy(&sA);
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igraph_matrix_init(&B, 0, 0);
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igraph_sparsemat_as_matrix(&B, &sB);
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igraph_matrix_init(&C, 0, 0);
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igraph_sparsemat_as_matrix(&C, &sC);
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/* All possible products */
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igraph_sparsemat_multiply(&sB, &sC, &sA);
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igraph_matrix_init(&A1, 0, 0);
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igraph_sparsemat_as_matrix(&A1, &sA);
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igraph_matrix_init(&A2, 0, 0);
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igraph_sparsemat_dense_multiply(&B, &sC, &A2);
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igraph_matrix_init(&A3, 0, 0);
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igraph_sparsemat_multiply_by_dense(&sB, &C, &A3);
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if (igraph_matrix_maxdifference(&A1, &A2) > 1e-10 ||
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igraph_matrix_maxdifference(&A2, &A3) > 1e-10) {
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return 1;
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}
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igraph_sparsemat_destroy(&sA);
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igraph_sparsemat_destroy(&sB);
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igraph_sparsemat_destroy(&sC);
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igraph_matrix_destroy(&A1);
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igraph_matrix_destroy(&A2);
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igraph_matrix_destroy(&A3);
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igraph_matrix_destroy(&B);
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igraph_matrix_destroy(&C);
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VERIFY_FINALLY_STACK();
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return 0;
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}
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