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 +1,77 @@
+/*
+   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 bench(const char *name, igraph_t *graph, int rep) {
+    igraph_int_t vcount = igraph_vcount(graph);
+    igraph_int_t ecount = igraph_ecount(graph);
+    igraph_int_t trials = 10*ecount;
+    char msg[200];
+
+    snprintf(msg, sizeof(msg) / sizeof(msg[0]),
+             "%s, |V|=%6" IGRAPH_PRId ", |E|=%6" IGRAPH_PRId ", %6" IGRAPH_PRId " swaps, %dx",
+             name, vcount, ecount, trials, rep);
+
+    BENCH(msg, REPEAT(igraph_rewire(graph, trials, IGRAPH_SIMPLE_SW, NULL), rep));
+}
+
+void bench_er(igraph_int_t n, igraph_int_t m, int rep) {
+    igraph_t graph;
+
+    igraph_erdos_renyi_game_gnm(&graph, n, m, IGRAPH_UNDIRECTED, IGRAPH_SIMPLE_SW, IGRAPH_EDGE_UNLABELED);
+
+    bench("G(n,m)", &graph, rep);
+
+    igraph_destroy(&graph);
+}
+
+void bench_ba(igraph_int_t n, igraph_int_t m, int rep) {
+    igraph_t graph;
+
+    igraph_barabasi_game(&graph, n, 1, m ,NULL, true, 1, IGRAPH_UNDIRECTED, IGRAPH_BARABASI_BAG, NULL);
+
+    bench("BA", &graph, rep);
+
+    igraph_destroy(&graph);
+}
+
+int main(void) {
+    igraph_rng_seed(igraph_rng_default(), 137);
+    BENCH_INIT();
+
+    bench_er(100, 3000, 100);
+    bench_er(300, 3000, 100);
+    bench_er(1000, 3000, 100);
+    bench_er(3000, 3000, 100);
+    bench_er(10000, 3000, 100);
+
+    printf("\n");
+    bench_er(300, 30000, 10);
+    bench_er(1000, 30000, 10);
+    bench_er(3000, 30000, 10);
+    bench_er(10000, 30000, 10);
+
+    printf("\n");
+    bench_ba(1000, 3, 100);
+    bench_ba(10000, 3, 10);
+    bench_ba(100000, 3, 1);
+
+    return 0;
+}