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Structures

Evex->z

Get the z field (embedded opmask) of evex-prefixes.

Signature
(evex->z evex-prefixes) → z
Arguments: evex-prefixes — Guard (evex-prefixes-p evex-prefixes).
Returns: z — Type (unsigned-byte-p 1 z), given the guard.

Definitions and Theorems

Function: evex->z$inline

(defun evex->z$inline (evex-prefixes)
  (declare (xargs :guard (evex-prefixes-p evex-prefixes)))
  (evex-byte3->z (evex-prefixes->byte3 evex-prefixes)))

Theorem: return-type-of-evex->z

(defthm return-type-of-evex->z
  (implies (and (evex-prefixes-p$inline evex-prefixes))
           (b* ((z (evex->z$inline evex-prefixes)))
             (unsigned-byte-p 1 z)))
  :rule-classes :rewrite)