/* -*- mode: C -*- */ /* IGraph library. Copyright (C) 2009-2012 Gabor Csardi 334 Harvard street, Cambridge, MA 02139 USA 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef IGRAPH_STRUCTURAL_H #define IGRAPH_STRUCTURAL_H #include "igraph_decls.h" #include "igraph_constants.h" #include "igraph_types.h" #include "igraph_vector.h" #include "igraph_matrix.h" #include "igraph_datatype.h" #include "igraph_iterators.h" #include "igraph_attributes.h" #include "igraph_sparsemat.h" __BEGIN_DECLS /* -------------------------------------------------- */ /* Basic query functions */ /* -------------------------------------------------- */ IGRAPH_EXPORT int igraph_are_connected(const igraph_t *graph, igraph_integer_t v1, igraph_integer_t v2, igraph_bool_t *res); IGRAPH_EXPORT int igraph_count_multiple(const igraph_t *graph, igraph_vector_t *res, igraph_es_t es); IGRAPH_EXPORT int igraph_density(const igraph_t *graph, igraph_real_t *res, igraph_bool_t loops); IGRAPH_EXPORT int igraph_diversity(const igraph_t *graph, const igraph_vector_t *weights, igraph_vector_t *res, const igraph_vs_t vs); IGRAPH_EXPORT int igraph_girth(const igraph_t *graph, igraph_integer_t *girth, igraph_vector_t *circle); IGRAPH_EXPORT int igraph_has_loop(const igraph_t *graph, igraph_bool_t *res); IGRAPH_EXPORT int igraph_has_multiple(const igraph_t *graph, igraph_bool_t *res); IGRAPH_EXPORT int igraph_is_loop(const igraph_t *graph, igraph_vector_bool_t *res, igraph_es_t es); IGRAPH_EXPORT int igraph_is_multiple(const igraph_t *graph, igraph_vector_bool_t *res, igraph_es_t es); IGRAPH_EXPORT int igraph_is_mutual(const igraph_t *graph, igraph_vector_bool_t *res, igraph_es_t es); IGRAPH_EXPORT int igraph_is_simple(const igraph_t *graph, igraph_bool_t *res); IGRAPH_EXPORT int igraph_is_tree(const igraph_t *graph, igraph_bool_t *res, igraph_integer_t *root, igraph_neimode_t mode); IGRAPH_EXPORT int igraph_maxdegree(const igraph_t *graph, igraph_integer_t *res, igraph_vs_t vids, igraph_neimode_t mode, igraph_bool_t loops); IGRAPH_EXPORT int igraph_reciprocity(const igraph_t *graph, igraph_real_t *res, igraph_bool_t ignore_loops, igraph_reciprocity_t mode); IGRAPH_EXPORT int igraph_strength(const igraph_t *graph, igraph_vector_t *res, const igraph_vs_t vids, igraph_neimode_t mode, igraph_bool_t loops, const igraph_vector_t *weights); IGRAPH_EXPORT int igraph_sort_vertex_ids_by_degree(const igraph_t *graph, igraph_vector_t *outvids, igraph_vs_t vids, igraph_neimode_t mode, igraph_bool_t loops, igraph_order_t order, igraph_bool_t only_indices); /* -------------------------------------------------- */ /* Structural properties */ /* -------------------------------------------------- */ IGRAPH_EXPORT int igraph_minimum_spanning_tree(const igraph_t *graph, igraph_vector_t *res, const igraph_vector_t *weights); IGRAPH_EXPORT int igraph_minimum_spanning_tree_unweighted(const igraph_t *graph, igraph_t *mst); IGRAPH_EXPORT int igraph_minimum_spanning_tree_prim(const igraph_t *graph, igraph_t *mst, const igraph_vector_t *weights); IGRAPH_EXPORT int igraph_random_spanning_tree(const igraph_t *graph, igraph_vector_t *res, igraph_integer_t vid); IGRAPH_EXPORT int igraph_subcomponent(const igraph_t *graph, igraph_vector_t *res, igraph_real_t vid, igraph_neimode_t mode); IGRAPH_EXPORT int igraph_unfold_tree(const igraph_t *graph, igraph_t *tree, igraph_neimode_t mode, const igraph_vector_t *roots, igraph_vector_t *vertex_index); IGRAPH_EXPORT int igraph_maximum_cardinality_search(const igraph_t *graph, igraph_vector_t *alpha, igraph_vector_t *alpham1); IGRAPH_EXPORT int igraph_is_chordal(const igraph_t *graph, const igraph_vector_t *alpha, const igraph_vector_t *alpham1, igraph_bool_t *chordal, igraph_vector_t *fill_in, igraph_t *newgraph); IGRAPH_EXPORT int igraph_avg_nearest_neighbor_degree(const igraph_t *graph, igraph_vs_t vids, igraph_neimode_t mode, igraph_neimode_t neighbor_degree_mode, igraph_vector_t *knn, igraph_vector_t *knnk, const igraph_vector_t *weights); IGRAPH_EXPORT int igraph_feedback_arc_set(const igraph_t *graph, igraph_vector_t *result, const igraph_vector_t *weights, igraph_fas_algorithm_t algo); /* -------------------------------------------------- */ /* Spectral Properties */ /* -------------------------------------------------- */ IGRAPH_EXPORT int igraph_laplacian(const igraph_t *graph, igraph_matrix_t *res, igraph_sparsemat_t *sparseres, igraph_bool_t normalized, const igraph_vector_t *weights); __END_DECLS #endif