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Verilog-printing

Vl-direction-string

Signature
(vl-direction-string x) → str
Arguments: x — Guard (vl-direction-p x).
Returns: str — Type (stringp str).

Definitions and Theorems

Function: vl-direction-string

(defun vl-direction-string (x)
  (declare (xargs :guard (vl-direction-p x)))
  (let ((__function__ 'vl-direction-string))
    (declare (ignorable __function__))
    (case (vl-direction-fix x)
          (:vl-input "input")
          (:vl-output "output")
          (:vl-inout "inout")
          (otherwise (or (impossible) "")))))

Theorem: stringp-of-vl-direction-string

(defthm stringp-of-vl-direction-string
  (b* ((str (vl-direction-string x)))
    (stringp str))
  :rule-classes :type-prescription)

Theorem: vl-direction-string-of-vl-direction-fix-x

(defthm vl-direction-string-of-vl-direction-fix-x
  (equal (vl-direction-string (vl-direction-fix x))
         (vl-direction-string x)))

Theorem: vl-direction-string-vl-direction-equiv-congruence-on-x

(defthm vl-direction-string-vl-direction-equiv-congruence-on-x
  (implies (vl-direction-equiv x x-equiv)
           (equal (vl-direction-string x)
                  (vl-direction-string x-equiv)))
  :rule-classes :congruence)