Abdelrahman Said
114 lines
4.0 KiB
C
114 lines
4.0 KiB
C
/*
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igraph library.
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Copyright (C) 2021-2022 The igraph development team <igraph@igraph.org>
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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, see <https://www.gnu.org/licenses/>.
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*/
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#include <igraph.h>
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#include "test_utilities.h"
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int main(void) {
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igraph_t g;
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igraph_real_t global, global2, global3;
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/* Small graphs */
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printf("Null graph: ");
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igraph_empty(&g, 0, IGRAPH_UNDIRECTED);
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igraph_transitivity_undirected(&g, &global, IGRAPH_TRANSITIVITY_NAN);
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print_real(stdout, global, "%g");
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printf("\n");
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igraph_destroy(&g);
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printf("\nSingleton graph: ");
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igraph_empty(&g, 1, IGRAPH_UNDIRECTED);
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igraph_transitivity_undirected(&g, &global, IGRAPH_TRANSITIVITY_NAN);
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print_real(stdout, global, "%g");
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printf("\n");
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igraph_destroy(&g);
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printf("\nTwo connected vertices: ");
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igraph_small(&g, 2, IGRAPH_UNDIRECTED, 0,1, -1);
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igraph_transitivity_undirected(&g, &global, IGRAPH_TRANSITIVITY_NAN);
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print_real(stdout, global, "%g");
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printf("\n");
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igraph_destroy(&g);
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printf("\nTriangle: ");
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igraph_full(&g, 3, IGRAPH_UNDIRECTED, IGRAPH_NO_LOOPS);
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igraph_transitivity_undirected(&g, &global, IGRAPH_TRANSITIVITY_NAN);
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print_real(stdout, global, "%g");
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printf("\n");
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igraph_destroy(&g);
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printf("\nTwo-star: ");
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igraph_small(&g, 3, IGRAPH_UNDIRECTED, 0,2, 0,1, -1);
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igraph_transitivity_undirected(&g, &global, IGRAPH_TRANSITIVITY_NAN);
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print_real(stdout, global, "%g");
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printf("\n");
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igraph_destroy(&g);
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printf("\nZachary karate club: ");
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igraph_famous(&g, "Zachary");
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igraph_transitivity_undirected(&g, &global, IGRAPH_TRANSITIVITY_NAN);
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print_real(stdout, global, "%g");
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printf("\n");
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igraph_destroy(&g);
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printf("\nDirected and multigraphs:\n");
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igraph_small(&g, 20, IGRAPH_DIRECTED,
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15, 12, 12, 10, 15, 0, 11, 10, 2, 8, 8, 6, 13, 17, 10, 10, 17, 2, 14,
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0, 16, 13, 14, 14, 0, 5, 6, 4, 0, 9, 0, 6, 10, 9, 16, 4, 14, 5, 17,
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15, 14, 9, 17, 17, 1, 4, 10, 16, 7, 0, 11, 12, 6, 13, 2, 17, 4, 0, 0,
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14, 4, 0, 6, 16, 16, 14, 13, 13, 12, 11, 3, 11, 11, 3, 6, 7, 4, 14,
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10, 8, 13, 7, 14, 2, 5, 2, 0, 14, 3, 15, 5, 5, 7, 2, 14, 15, 5, 10,
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10, 16, 7, 9, 14, 0, 15, 7, 13, 1, 15, 1, 4, 5, 4, 6, 16, 13, 6, 17,
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8, 6, 9, 3, 8, 6, 6, 14, 11, 14, 6, 10, 10, 5, 1, 0, 16, 17, 9, 1, 5,
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0, 5, 15, 8, 0, 0, 8, 5, 3, 9, 4, 13, 12, 11, 0, 11, 0, 10, 6, 4, 13,
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8, 9, 11, 11, 3, 16, 1, 2, 16, 0, 9, 8, 3, 8, 8, 7, 12, 10, 9, 3, 13,
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5, 3, 9, 6, 2, 11, 10, 1, 16, 0, 2, 10, 17, 16, 8, 11, 5, 13, 0, 19, 19,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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-1);
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printf("\nDirected multi: ");
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igraph_transitivity_undirected(&g, &global, IGRAPH_TRANSITIVITY_NAN);
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print_real(stdout, global, "%.10g");
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printf("\n");
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printf("Undirected multi: ");
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igraph_to_undirected(&g, IGRAPH_TO_UNDIRECTED_COLLAPSE, NULL);
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igraph_transitivity_undirected(&g, &global2, IGRAPH_TRANSITIVITY_NAN);
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print_real(stdout, global2, "%.10g");
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printf("\n");
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printf("Simple: ");
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igraph_simplify(&g, true, true, NULL);
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igraph_transitivity_undirected(&g, &global3, IGRAPH_TRANSITIVITY_NAN);
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print_real(stdout, global3, "%.10g");
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printf("\n");
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IGRAPH_ASSERT(global == global2);
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IGRAPH_ASSERT(global == global3);
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igraph_destroy(&g);
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VERIFY_FINALLY_STACK();
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return 0;
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}
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