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• Wire

Wiretype

This is an ordinary defenum.

Function: wiretype

(defun wiretype (x)
  (declare (xargs :guard t))
  (or (eq x 'nil)
      (eq x ':supply0)
      (eq x ':supply1)
      (eq x ':wand)
      (eq x ':wor)
      (eq x ':tri0)
      (eq x ':tri1)
      (eq x ':trireg)))

Theorem: type-when-wiretype

(defthm type-when-wiretype
  (implies (wiretype x)
           (if (if (symbolp x)
                   (if (not (equal x 't))
                       (not (equal x 'nil))
                     'nil)
                 'nil)
               't
             (equal x 'nil)))
  :rule-classes :compound-recognizer)