/usr/include/skalibs/avltree.h is in skalibs-dev 0.47-1.
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 28 29 30 31 32 33 34 | /* Public domain. */
#ifndef AVLTREE_H
#define AVLTREE_H
#include "gccattributes.h"
#include "avlnodebunch.h"
#define AVLTREE_ZERO { GEN_BUNCH_ZERO, 0 }
#define avltree_i(t, i) ((i) ? ((t)->x.x.s[i].data) : 0)
#define avltree_len(t) ((t)->x.n - 1)
#define avltree_root(t) ((t)->x.x.s[0].left)
#define avltree_setroot(t, r) ((t)->x.x.s[0].left = (r))
typedef struct avltree avltree, *avltree_ref ;
struct avltree
{
avlnodebunch x ;
int (*cmp)(unsigned int, unsigned int) ;
} ;
extern void avltree_free (avltree_ref) ;
extern int avltree_init (avltree_ref, int (*)(unsigned int, unsigned int)) ;
extern unsigned int avltree_search (avltree const *, unsigned int) gccattr_pure ;
extern unsigned int avltree_insert (avltree_ref, unsigned int) ;
extern unsigned int avltree_delete (avltree_ref, unsigned int) ;
extern unsigned int avltree_deletenode (avltree_ref, unsigned int) ;
extern unsigned int avltree_height (avltree const *) gccattr_pure ;
extern int avltree_iter (avltree_ref, int (*)(unsigned int, unsigned int, void *), void *) ;
#endif
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