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 +1,45 @@
+/*
+   igraph library.
+   Copyright (C) 2003-2025  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_MEMORY_H
+#define IGRAPH_MEMORY_H
+
+#include "igraph_decls.h"
+
+#include <stdint.h>
+#include <stdlib.h>
+
+IGRAPH_BEGIN_C_DECLS
+
+/* Helper macro to check if n*sizeof(t) overflows in IGRAPH_CALLOC and IGRAPH_REALLOC */
+#define IGRAPH_I_ALLOC_CHECK_OVERFLOW(n,t,expr) \
+    (t*) ((0 <= (n) && ((size_t)(n)) <= SIZE_MAX / sizeof(t)) ? (expr) : NULL)
+
+#define IGRAPH_CALLOC(n,t)    IGRAPH_I_ALLOC_CHECK_OVERFLOW(n, t, calloc(sizeof(t) * ((n) > 0 ? (n) : 1), 1))
+#define IGRAPH_MALLOC(n)      malloc( (size_t) ((n) > 0 ? (n) : 1) )
+#define IGRAPH_REALLOC(p,n,t) IGRAPH_I_ALLOC_CHECK_OVERFLOW(n, t, realloc((void*)(p), sizeof(t) * ((n) > 0 ? (n) : 1)))
+#define IGRAPH_FREE(p)        (free( (void *)(p) ), (p) = NULL)
+
+IGRAPH_EXPORT void *igraph_calloc(size_t count, size_t size);
+IGRAPH_EXPORT void *igraph_malloc(size_t size);
+IGRAPH_EXPORT void *igraph_realloc(void* ptr, size_t size);
+IGRAPH_EXPORT void igraph_free(void *ptr);
+
+IGRAPH_END_C_DECLS
+
+#endif