		Search-engine friendly clone of the ACL2 documentation.

Expr-tools

Vl-zatom-p

Signature
(vl-zatom-p x) → *
Arguments: x — Guard (vl-expr-p x).

Definitions and Theorems

Function: vl-zatom-p

(defun vl-zatom-p (x)
 (declare (xargs :guard (vl-expr-p x)))
 (let ((__function__ 'vl-zatom-p))
  (declare (ignorable __function__))
  (vl-expr-case
       x
       :vl-literal
       (vl-value-case x.val
                      :vl-weirdint (vl-zbitlist-p x.val.bits)
                      :vl-extint (vl-bit-equiv x.val.value :vl-zval)
                      :otherwise nil)
       :otherwise nil)))

Theorem: vl-zatom-p-of-vl-expr-fix-x

(defthm vl-zatom-p-of-vl-expr-fix-x
  (equal (vl-zatom-p (vl-expr-fix x))
         (vl-zatom-p x)))

Theorem: vl-zatom-p-vl-expr-equiv-congruence-on-x

(defthm vl-zatom-p-vl-expr-equiv-congruence-on-x
  (implies (vl-expr-equiv x x-equiv)
           (equal (vl-zatom-p x)
                  (vl-zatom-p x-equiv)))
  :rule-classes :congruence)