		Search-engine friendly clone of the ACL2 documentation.

Aig-symbolic-arithmetic

Sv::aig-sign-s

Signature
(sv::aig-sign-s x) → sign
Arguments: x — Guard (true-listp x).

Definitions and Theorems

Function: aig-sign-s

(defun sv::aig-sign-s (x)
  (declare (xargs :guard (true-listp x)))
  (let ((__function__ 'sv::aig-sign-s))
    (declare (ignorable __function__))
    (b* (((mv first rest endp)
          (first/rest/end x))
         ((when endp) first))
      (sv::aig-sign-s rest))))

Theorem: aig-sign-s-correct

(defthm sv::aig-sign-s-correct
  (b* ((sign (sv::aig-sign-s x)))
    (and (equal (acl2::aig-eval sign env)
                (< (sv::aig-list->s x env) 0)))))