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 +1,106 @@
+/*
+   igraph library.
+   Copyright (C) 2024  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 "test_utilities.h"
+
+#define CHECK_PRINT(expr) \
+    do { \
+        igraph_error_t err = expr; \
+        if (err != IGRAPH_SUCCESS) { \
+            fprintf(stderr, "FAILED on the following graph at line %d:\n", __LINE__); \
+            fprintf(stderr, "directed: %d, vcount: %d, ecount: %d\n", \
+                (int) igraph_is_directed(&g), (int) igraph_vcount(&g), (int) igraph_ecount(&g)); \
+            igraph_write_graph_edgelist(&g, stderr); \
+            abort(); \
+        } \
+    } while (0)
+
+int main(void) {
+    igraph_vector_t vec;
+    igraph_real_t val;
+
+    igraph_rng_seed(igraph_rng_default(), 987);
+    igraph_set_warning_handler(&igraph_warning_handler_ignore);
+    igraph_set_error_handler(&igraph_error_handler_printignore);
+
+    igraph_vector_init(&vec, 0);
+
+    for (igraph_int_t i=0; i < 1252; i++) {
+        igraph_t g;
+        igraph_atlas(&g, i);
+
+        CHECK_PRINT(igraph_eigenvector_centrality(&g, &vec, &val, IGRAPH_ALL, NULL, NULL));
+        CHECK_PRINT(igraph_hub_and_authority_scores(&g, &vec, NULL, &val, NULL, NULL));
+
+        igraph_to_directed(&g, IGRAPH_TO_DIRECTED_RANDOM);
+        CHECK_PRINT(igraph_eigenvector_centrality(&g, &vec, &val, IGRAPH_OUT, NULL, NULL));
+        CHECK_PRINT(igraph_eigenvector_centrality(&g, &vec, &val, IGRAPH_IN, NULL, NULL));
+        CHECK_PRINT(igraph_hub_and_authority_scores(&g, &vec, NULL, &val, NULL, NULL));
+        CHECK_PRINT(igraph_pagerank(&g, IGRAPH_PAGERANK_ALGO_ARPACK, &vec, &val, igraph_vss_all(), true, 0.85, NULL, NULL));
+        CHECK_PRINT(igraph_pagerank(&g, IGRAPH_PAGERANK_ALGO_ARPACK, &vec, &val, igraph_vss_all(), true, 0.99, NULL, NULL));
+
+        igraph_destroy(&g);
+    }
+
+    for (igraph_int_t i=3; i < 100; i++) {
+        igraph_t g;
+        igraph_ring(&g, i, true, false, true);
+        CHECK_PRINT(igraph_eigenvector_centrality(&g, &vec, NULL, IGRAPH_OUT, NULL, NULL));
+        igraph_destroy(&g);
+    }
+
+    {
+        // A <--> C, D <--> E, B
+        igraph_t g;
+        igraph_small(&g, 5, true,
+                     0,2, 2,0, 3,4, 4,2,
+                     -1);
+
+        CHECK_PRINT(igraph_eigenvector_centrality(&g, &vec, &val, IGRAPH_OUT, NULL, NULL));
+        CHECK_PRINT(igraph_eigenvector_centrality(&g, &vec, &val, IGRAPH_IN, NULL, NULL));
+        CHECK_PRINT(igraph_hub_and_authority_scores(&g, &vec, NULL, &val, NULL, NULL));
+        CHECK_PRINT(igraph_pagerank(&g, IGRAPH_PAGERANK_ALGO_ARPACK, &vec, &val, igraph_vss_all(), true, 0.85, NULL, NULL));
+        CHECK_PRINT(igraph_pagerank(&g, IGRAPH_PAGERANK_ALGO_ARPACK, &vec, &val, igraph_vss_all(), true, 0.99, NULL, NULL));
+
+        igraph_destroy(&g);
+    }
+
+    for (igraph_int_t n=4; n <= 7; n++) {
+        for (igraph_int_t i=0; i < 100; i++) {
+            igraph_t g;
+
+            igraph_erdos_renyi_game_gnp(&g, n, 0.5, IGRAPH_DIRECTED, IGRAPH_LOOPS_SW, IGRAPH_EDGE_UNLABELED);
+
+            CHECK_PRINT(igraph_eigenvector_centrality(&g, &vec, &val, IGRAPH_OUT, NULL, NULL));
+            CHECK_PRINT(igraph_eigenvector_centrality(&g, &vec, &val, IGRAPH_IN, NULL, NULL));
+            CHECK_PRINT(igraph_hub_and_authority_scores(&g, &vec, NULL, &val, NULL, NULL));
+            CHECK_PRINT(igraph_pagerank(&g, IGRAPH_PAGERANK_ALGO_ARPACK, &vec, &val, igraph_vss_all(), true, 0.85, NULL, NULL));
+            CHECK_PRINT(igraph_pagerank(&g, IGRAPH_PAGERANK_ALGO_ARPACK, &vec, &val, igraph_vss_all(), true, 0.99, NULL, NULL));
+
+            igraph_destroy(&g);
+        }
+    }
+
+    igraph_vector_destroy(&vec);
+
+    VERIFY_FINALLY_STACK();
+
+    return 0;
+}