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4vmask-p

Recognizer for 4vmasks.

Function: 4vmask-p

(defun 4vmask-p (x)
  (declare (xargs :guard t))
  (let ((__function__ '4vmask-p))
    (declare (ignorable __function__))
    (sparseint-p x)))

Theorem: 4vmask-p-compound-recognizer

(defthm 4vmask-p-compound-recognizer
  (implies (4vmask-p x)
           (or (integerp x) (consp x)))
  :rule-classes :compound-recognizer)

Theorem: sparseint-p-when-4vmask-p

(defthm sparseint-p-when-4vmask-p
  (implies (4vmask-p x) (sparseint-p x)))

Theorem: 4vmask-p-when-sparseint-p

(defthm 4vmask-p-when-sparseint-p
  (implies (sparseint-p x) (4vmask-p x)))