		Search-engine friendly clone of the ACL2 documentation.

Fsm-p

Recognizer for fsm structures.

Signature
(fsm-p x) → *

Definitions and Theorems

Function: fsm-p

(defun fsm-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'fsm-p))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x)
                                 '(values nextstate)))
              :exec (fty::alist-with-carsp x '(values nextstate)))
         (b* ((values (cdr (std::da-nth 0 x)))
              (nextstate (cdr (std::da-nth 1 x))))
           (and (svex-alist-p values)
                (svex-alist-p nextstate))))))

Theorem: consp-when-fsm-p

(defthm consp-when-fsm-p
  (implies (fsm-p x) (consp x))
  :rule-classes :compound-recognizer)