Change the length of the ubdd-arr array.
In the execution this resizes (to grow or shrink) the underlying Common Lisp array. The logical definition is based on resize-list:
Function:
(defun resize-ubdds$a (stobjs::i ubdd-arr$a) (declare (xargs :guard (ubdd-arr$ap ubdd-arr$a))) (resize-list ubdd-arr$a stobjs::i 'nil))