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• Vl-read-any-base

Vl-signed-basep

Determine signedness for a base from vl-read-any-base.

Signature

(vl-signed-basep base) → signedp

Arguments

base — Guard (character-listp base).

Returns

signedp — Type (booleanp signedp).

Definitions and Theorems

Function: vl-signed-basep$inline

(defun vl-signed-basep$inline (base)
  (declare (xargs :guard (character-listp base)))
  (let ((__function__ 'vl-signed-basep))
    (declare (ignorable __function__))
    (consp (or (member #\s base)
               (member #\S base)))))

Theorem: booleanp-of-vl-signed-basep

(defthm booleanp-of-vl-signed-basep
  (b* ((signedp (vl-signed-basep$inline base)))
    (booleanp signedp))
  :rule-classes :type-prescription)