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--- man/man3/avl.3
+++ man/man3/avl.3
void endwalk(Avlwalk *walk);
void insertavl(Avltree *tree, Avl *new, Avl **oldp);
Avl *lookupavl(Avltree *tree, Avl *key);
+Avl *searchavl(Avltree *tree, Avl *key, int neighbor);
Avltree *mkavltree(int(*cmp)(Avl*, Avl*));
.EE
.SH DESCRIPTION
or
.B nil
if none.
+.PP
+.I Searchavl
+returns the
+.I tree
+node that matches
+.I key
+by
+.IR tree 's
+comparison function, if it exists.
+If it does not, and
+.I neighbor
+is positive, it returns the nearest node whose
+.I key
+is greater or
+.B nil
+if there is none and, if
+.I neighbor
+is negative, it returns the nearest node whose
+.I key
+is less or
+.B nil
+if there is none.
+It is an error to set
+.I neighbor
+to values other than \-1, 0, or +1.
+.PP
.I Deleteavl
removes the node matching
.I key