Add graph references

2026-06-28 13:49:01 +01:00
parent 0a9807e448
commit a11edf0c53
2578 changed files with 868045 additions and 0 deletions
@@ -0,0 +1,71 @@
+/*
+   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;
+}