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Syntax

Vl-cstrength-p

Representation of charge strengths.

We represent Verilog's charge strengths with the keyword symbols recognized by (vl-cstrength-p x).

BOZO add references to the Verilog-2005 standard, description of what these are.

This is an ordinary defenum.

Function: vl-cstrength-p

(defun vl-cstrength-p (x)
  (declare (xargs :guard t))
  (or (eq x ':vl-large)
      (eq x ':vl-medium)
      (eq x ':vl-small)))

Theorem: type-when-vl-cstrength-p

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