Change the length of the lhsarr 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-lhss$a (stobjs::i lhsarr$a) (declare (xargs :guard (lhsarr$ap lhsarr$a))) (resize-list lhsarr$a stobjs::i 'nil))