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#pragma lib "libavl.a"
#pragma src "/sys/src/libavl"
typedef struct Avl Avl;
typedef struct Avltree Avltree;
struct Avl {
Avl *c[2];
Avl *p;
schar balance;
};
struct Avltree {
int (*cmp)(Avl*, Avl*);
Avl *root;
};
Avltree *avlcreate(int(*cmp)(Avl*, Avl*));
Avl *avllookup(Avltree*, Avl*);
Avl *avldelete(Avltree*, Avl*);
Avl *avlinsert(Avltree*, Avl*);
Avl *avlnext(Avl*);
Avl *avlprev(Avl*);
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