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Stripping-functions

Vl-plainarg-strip

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

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) (vl-plainarg-fix x)))
      (b* ((expr (vl-maybe-expr-strip x.expr))
           (atts ((lambda (x) (declare (ignore x)) nil)
                  x.atts)))
        (change-vl-plainarg x
                            :expr expr
                            :atts atts)))))

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

(defthm vl-plainarg-p-of-vl-plainarg-strip
  (b* ((new-x (vl-plainarg-strip x)))
    (vl-plainarg-p new-x))
  :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)