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• Stripping-functions

Vl-atom-strip

Throw away widths and types from an atom.

Signature

(vl-atom-strip x) → x-strip

Arguments

x — Guard (vl-expr-p x).

Returns

x-strip — Type (and (vl-expr-p x-strip) (eq (vl-expr-kind x-strip) :atom)).

Definitions and Theorems

Function: vl-atom-strip$inline

(defun vl-atom-strip$inline (x)
  (declare (xargs :guard (vl-expr-p x)))
  (declare (xargs :guard (vl-atom-p x)))
  (let ((__function__ 'vl-atom-strip))
    (declare (ignorable __function__))
    (mbe :logic
         (change-vl-atom x
                         :finalwidth nil
                         :finaltype nil
                         :atts nil)
         :exec
         (if (or (vl-atom->finalwidth x)
                 (vl-atom->finaltype x)
                 (vl-atom->atts x))
             (change-vl-atom x
                             :finalwidth nil
                             :finaltype nil
                             :atts nil)
           x))))

Theorem: return-type-of-vl-atom-strip

(defthm return-type-of-vl-atom-strip
  (b* ((x-strip (vl-atom-strip$inline x)))
    (and (vl-expr-p x-strip)
         (eq (vl-expr-kind x-strip) :atom)))
  :rule-classes :rewrite)

Theorem: vl-atom-strip$inline-of-vl-expr-fix-x

(defthm vl-atom-strip$inline-of-vl-expr-fix-x
  (equal (vl-atom-strip$inline (vl-expr-fix x))
         (vl-atom-strip$inline x)))

Theorem: vl-atom-strip$inline-vl-expr-equiv-congruence-on-x

(defthm vl-atom-strip$inline-vl-expr-equiv-congruence-on-x
  (implies (vl-expr-equiv x x-equiv)
           (equal (vl-atom-strip$inline x)
                  (vl-atom-strip$inline x-equiv)))
  :rule-classes :congruence)