(downcase-charlist-aux x acc) → *
Function:
(defun downcase-charlist-aux (x acc) (declare (xargs :guard (character-listp x))) (let ((acl2::__function__ 'downcase-charlist-aux)) (declare (ignorable acl2::__function__)) (if (atom x) acc (downcase-charlist-aux (cdr x) (cons (downcase-char (car x)) acc)))))