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Interp-flags

Interp-flags-p

Recognizer for interp-flags bit structures.

Signature
(interp-flags-p x) → *

Definitions and Theorems

Function: interp-flags-p

(defun interp-flags-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'interp-flags-p))
    (declare (ignorable __function__))
    (mbe :logic (unsigned-byte-p 6 x)
         :exec (and (natp x) (< x 64)))))

Theorem: interp-flags-p-when-unsigned-byte-p

(defthm interp-flags-p-when-unsigned-byte-p
  (implies (unsigned-byte-p 6 x)
           (interp-flags-p x)))

Theorem: unsigned-byte-p-when-interp-flags-p

(defthm unsigned-byte-p-when-interp-flags-p
  (implies (interp-flags-p x)
           (unsigned-byte-p 6 x)))

Theorem: interp-flags-p-compound-recognizer

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