		Search-engine friendly clone of the ACL2 documentation.

Evex-prefixes-p

Recognizer for evex-prefixes bit structures.

Function: evex-prefixes-p$inline

(defun evex-prefixes-p$inline (x)
  (declare (xargs :guard t))
  (mbe :logic (unsigned-byte-p 32 x)
       :exec (and (natp x) (< x 4294967296))))

Theorem: evex-prefixes-p-when-unsigned-byte-p

(defthm evex-prefixes-p-when-unsigned-byte-p
  (implies (unsigned-byte-p 32 x)
           (evex-prefixes-p x)))

Theorem: unsigned-byte-p-when-evex-prefixes-p

(defthm unsigned-byte-p-when-evex-prefixes-p
  (implies (evex-prefixes-p x)
           (unsigned-byte-p 32 x)))

Theorem: evex-prefixes-p-compound-recognizer

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