btree.h

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#ifndef GRASS_BTREE_H
#define GRASS_BTREE_H
 
typedef struct
{
    void *key;
    void *data;
    int left;
    int right;
} BTREE_NODE;
 
typedef struct
{
    BTREE_NODE *node;           /* tree of values */
    int tlen;                   /* allocated tree size */
    int N;                      /* number of actual nodes in tree */
    int incr;                   /* number of nodes to add at a time */
    int cur;
    int (*cmp) (const void *, const void *);    /* routine to compare keys */
} BTREE;
 
#include <grass/defs/btree.h>
 
#endif