Modify the
In the execution this is an array write, but the logical definition is just a thin wrapper for update-nth:
Function:
(defun update-aigs$ai (stobjs::i stobjs::v aigtrans$a) (declare (xargs :guard (and (aigtrans$ap aigtrans$a) (integerp stobjs::i) (<= 0 stobjs::i) (< stobjs::i (aigs$a-length aigtrans$a)) (stobjs::typep$ stobjs::v t)))) (ec-call (update-nth stobjs::i stobjs::v aigtrans$a)))