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/*
igraph library.
Copyright (C) 2025 The igraph development team <igraph@igraph.org>
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, see <https://www.gnu.org/licenses/>.
*/
#include <igraph.h>
#include "bench.h"
void run_bench(int n) {
igraph_t graph;
igraph_matrix_t modmat;
int rep;
char msg[255];
rep = 20000 / n;
rep = rep*rep;
igraph_matrix_init(&modmat, n, n);
igraph_erdos_renyi_game_gnm(&graph, n, 10 * n, IGRAPH_DIRECTED, IGRAPH_LOOPS_SW, IGRAPH_EDGE_UNLABELED);
snprintf(msg, sizeof(msg) / sizeof(msg[0]),
"G(n,m), directed, n = %5d, m = %7" IGRAPH_PRId ", %dx", n, igraph_ecount(&graph), rep);
BENCH(msg, REPEAT(igraph_modularity_matrix(&graph, NULL, 1.0, &modmat, IGRAPH_DIRECTED), rep));
snprintf(msg, sizeof(msg) / sizeof(msg[0]),
"G(n,m), undirected, n = %5d, m = %7" IGRAPH_PRId ", %dx", n, igraph_ecount(&graph), rep);
BENCH(msg, REPEAT(igraph_modularity_matrix(&graph, NULL, 1.0, &modmat, IGRAPH_UNDIRECTED), rep));
igraph_destroy(&graph);
igraph_erdos_renyi_game_gnp(&graph, n, 0.1, IGRAPH_DIRECTED, IGRAPH_LOOPS_SW, IGRAPH_EDGE_UNLABELED);
snprintf(msg, sizeof(msg) / sizeof(msg[0]),
"G(n,p), directed, n = %5d, m = %7" IGRAPH_PRId ", %dx", n, igraph_ecount(&graph), rep);
BENCH(msg, REPEAT(igraph_modularity_matrix(&graph, NULL, 1.0, &modmat, IGRAPH_DIRECTED), rep));
snprintf(msg, sizeof(msg) / sizeof(msg[0]),
"G(n,p), undirected, n = %5d, m = %7" IGRAPH_PRId ", %dx", n, igraph_ecount(&graph), rep);
BENCH(msg, REPEAT(igraph_modularity_matrix(&graph, NULL, 1.0, &modmat, IGRAPH_UNDIRECTED), rep));
igraph_destroy(&graph);
igraph_matrix_destroy(&modmat);
}
int main(void) {
igraph_rng_seed(igraph_rng_default(), 137);
BENCH_INIT();
run_bench(100);
run_bench(1000);
run_bench(10000);
return 0;
}
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