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• Maybe-byte-list20

Maybe-byte-list20p

Recognizer for maybe-byte-list20 structures.

Signature

(maybe-byte-list20p x) → *

Definitions and Theorems

Function: maybe-byte-list20p

(defun maybe-byte-list20p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'maybe-byte-list20p))
    (declare (ignorable __function__))
    (cond ((not x) (b* nil t))
          (t (b* ((fty::val x))
               (byte-list20p fty::val))))))