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Stripping-functions

Vl-plainarg-strip

Signature
(vl-plainarg-strip x) → x-strip
Arguments: x — Guard (vl-plainarg-p x).
Returns: x-strip — Type (vl-plainarg-p x-strip).

Definitions and Theorems

Function: vl-plainarg-strip

(defun vl-plainarg-strip (x)
 (declare (xargs :guard (vl-plainarg-p x)))
 (let ((__function__ 'vl-plainarg-strip))
  (declare (ignorable __function__))
  (b* (((vl-plainarg x) x))
    (change-vl-plainarg x
                        :expr (if x.expr (vl-expr-strip x.expr) nil)
                        :atts nil
                        :portname nil
                        :dir nil))))

Theorem: vl-plainarg-p-of-vl-plainarg-strip

(defthm vl-plainarg-p-of-vl-plainarg-strip
  (b* ((x-strip (vl-plainarg-strip x)))
    (vl-plainarg-p x-strip))
  :rule-classes :rewrite)

Theorem: vl-plainarg-strip-of-vl-plainarg-fix-x

(defthm vl-plainarg-strip-of-vl-plainarg-fix-x
  (equal (vl-plainarg-strip (vl-plainarg-fix x))
         (vl-plainarg-strip x)))

Theorem: vl-plainarg-strip-vl-plainarg-equiv-congruence-on-x

(defthm vl-plainarg-strip-vl-plainarg-equiv-congruence-on-x
  (implies (vl-plainarg-equiv x x-equiv)
           (equal (vl-plainarg-strip x)
                  (vl-plainarg-strip x-equiv)))
  :rule-classes :congruence)