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Ienv

Ienv->version

Get the version field from a ienv.

Signature
(ienv->version x) → version
Arguments: x — Guard (ienvp x).
Returns: version — Type (versionp version).

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

Definitions and Theorems

Function: ienv->version$inline

(defun ienv->version$inline (x)
  (declare (xargs :guard (ienvp x)))
  (declare (xargs :guard t))
  (mbe :logic
       (b* ((x (and t x)))
         (version-fix (cdr (std::da-nth 0 x))))
       :exec (cdr (std::da-nth 0 x))))

Theorem: versionp-of-ienv->version

(defthm versionp-of-ienv->version
  (b* ((version (ienv->version$inline x)))
    (versionp version))
  :rule-classes :rewrite)

Theorem: ienv->version$inline-of-ienv-fix-x

(defthm ienv->version$inline-of-ienv-fix-x
  (equal (ienv->version$inline (ienv-fix x))
         (ienv->version$inline x)))

Theorem: ienv->version$inline-ienv-equiv-congruence-on-x

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