/usr/lib/grass64/include/grass/ibtree.h is in grass-dev 6.4.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | typedef struct
{
int key;
int data;
int left;
int right;
} IBTREE_NODE;
typedef struct
{
IBTREE_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) (); /* routine to compare keys */
} IBTREE;
int ibtree_create(IBTREE *, int (*)(), int);
int ibtree_find(IBTREE *, int, int *);
int ibtree_free(IBTREE *);
int ibtree_next(IBTREE *, int *, int *);
int ibtree_rewind(IBTREE *);
int Btree_init();
int Btree_add(int);
int Btree_report();
int ibtree_update(IBTREE *, int, int);
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