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 +1,47 @@
+/*
+   igraph library.
+   Copyright (C) 2009-2025  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/>.
+*/
+
+#ifndef IGRAPH_PSUMTREE_H
+#define IGRAPH_PSUMTREE_H
+
+#include "igraph_decls.h"
+#include "igraph_error.h"
+#include "igraph_vector.h"
+
+IGRAPH_BEGIN_C_DECLS
+
+typedef struct {
+    igraph_vector_t v;
+    igraph_int_t size;
+    igraph_int_t offset;
+} igraph_psumtree_t;
+
+IGRAPH_EXPORT igraph_error_t igraph_psumtree_init(igraph_psumtree_t *t, igraph_int_t size);
+IGRAPH_EXPORT void igraph_psumtree_reset(igraph_psumtree_t *t);
+IGRAPH_EXPORT void igraph_psumtree_destroy(igraph_psumtree_t *t);
+IGRAPH_EXPORT IGRAPH_FUNCATTR_PURE igraph_real_t igraph_psumtree_get(const igraph_psumtree_t *t, igraph_int_t idx);
+IGRAPH_EXPORT IGRAPH_FUNCATTR_PURE igraph_int_t igraph_psumtree_size(const igraph_psumtree_t *t);
+IGRAPH_EXPORT igraph_error_t igraph_psumtree_search(const igraph_psumtree_t *t, igraph_int_t *idx,
+                                         igraph_real_t elem);
+IGRAPH_EXPORT igraph_error_t igraph_psumtree_update(igraph_psumtree_t *t, igraph_int_t idx,
+                                         igraph_real_t new_value);
+IGRAPH_EXPORT IGRAPH_FUNCATTR_PURE igraph_real_t igraph_psumtree_sum(const igraph_psumtree_t *t);
+
+IGRAPH_END_C_DECLS
+
+#endif