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Cr4bits-p

Recognizer for cr4bits bit structures.

Function: cr4bits-p$inline

(defun cr4bits-p$inline (x)
  (declare (xargs :guard t))
  (mbe :logic (unsigned-byte-p 26 x)
       :exec (and (natp x) (< x 67108864))))

Theorem: cr4bits-p-when-unsigned-byte-p

(defthm cr4bits-p-when-unsigned-byte-p
  (implies (unsigned-byte-p 26 x)
           (cr4bits-p x)))

Theorem: unsigned-byte-p-when-cr4bits-p

(defthm unsigned-byte-p-when-cr4bits-p
  (implies (cr4bits-p x)
           (unsigned-byte-p 26 x)))

Theorem: cr4bits-p-compound-recognizer

(defthm cr4bits-p-compound-recognizer
  (implies (cr4bits-p x) (natp x))
  :rule-classes :compound-recognizer)