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Pointed-integers

Ushort-read

Representation of a read of a pointed type unsigned short.

Signature
(ushort-read x) → x
Arguments: x — Guard (star (ushortp x)).
Returns: x — Type (ushortp x).

Definitions and Theorems

Function: ushort-read

(defun ushort-read (x)
  (declare (xargs :guard (star (ushortp x))))
  (let ((__function__ 'ushort-read))
    (declare (ignorable __function__))
    (ushort-fix x)))

Theorem: ushortp-of-ushort-read

(defthm ushortp-of-ushort-read
  (b* ((x (ushort-read x))) (ushortp x))
  :rule-classes :rewrite)