GRASS GIS 8 Programmer's Manual  8.4.0dev(2024)-55b2a2bccc
card.h
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1 /****************************************************************************
2  * MODULE: R-Tree library
3  *
4  * AUTHOR(S): Antonin Guttman - original code
5  * Daniel Green (green@superliminal.com) - major clean-up
6  * and implementation of bounding spheres
7  * Markus Metz - file-based and memory-based R*-tree
8  *
9  * PURPOSE: Multidimensional index
10  *
11  * COPYRIGHT: (C) 2010 by the GRASS Development Team
12  *
13  * This program is free software under the GNU General Public
14  * License (>=v2). Read the file COPYING that comes with GRASS
15  * for details.
16  *****************************************************************************/
17 
18 #ifndef __CARD__
19 #define __CARD__
20 
21 /* balance criteria for node splitting */
22 /* NOTE: can be changed if needed but
23  * must be >= 2 and <= (t)->[nodecard|leafcard] / 2 */
24 #define MinNodeFill(t) ((t)->minfill_node_split)
25 #define MinLeafFill(t) ((t)->minfill_leaf_split)
26 
27 #define MAXKIDS(level, t) ((level) > 0 ? (t)->nodecard : (t)->leafcard)
28 #define MINFILL(level, t) \
29  ((level) > 0 ? (t)->minfill_node_split : (t)->minfill_leaf_split)
30 
31 #endif