/*
 * \AUTHOR: Serena Pallecchi student of Computer Science University of Pisa
 * (Italy) Commission from Faunalia Pontedera (PI) www.faunalia.it
 *
 *   This program is free software under the GPL (>=v2)
 *   Read the COPYING file that comes with GRASS for details.
 *
 */

#define AVL_S    1
#define AVL_D    2
#define AVL_SS   11
#define AVL_SD   12
#define AVL_DD   22
#define AVL_DS   21

#define AVL_PRES 0
#define AVL_ADD  1
#define AVL_ERR  -1
