avl-tree-map is a compiled Lisp function in `avl-tree.el'.

(avl-tree-map FUN TREE &optional REVERSE)

Modify all elements in the AVL tree TREE by applying FUNCTION.

Each element is replaced by the return value of FUNCTION applied
to that element.

FUNCTION is applied to the elements in ascending order, or
descending order if REVERSE is non-nil.