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Stat32

Stat32->error

Get the error field from a stat32.

Signature
(stat32->error x) → error
Arguments: x — Guard (stat32p x).
Returns: error — Type (booleanp error).

This is an ordinary field accessor created by fty::defprod.

Definitions and Theorems

Function: stat32->error$inline

(defun stat32->error$inline (x)
  (declare (xargs :guard (stat32p x)))
  (declare (xargs :guard t))
  (mbe :logic
       (b* ((x (and t x)))
         (acl2::bool-fix (cdr (std::da-nth 3 x))))
       :exec (cdr (std::da-nth 3 x))))

Theorem: booleanp-of-stat32->error

(defthm booleanp-of-stat32->error
  (b* ((error (stat32->error$inline x)))
    (booleanp error))
  :rule-classes :rewrite)

Theorem: stat32->error$inline-of-stat32-fix-x

(defthm stat32->error$inline-of-stat32-fix-x
  (equal (stat32->error$inline (stat32-fix x))
         (stat32->error$inline x)))

Theorem: stat32->error$inline-stat32-equiv-congruence-on-x

(defthm stat32->error$inline-stat32-equiv-congruence-on-x
  (implies (stat32-equiv x x-equiv)
           (equal (stat32->error$inline x)
                  (stat32->error$inline x-equiv)))
  :rule-classes :congruence)