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Var-info

Var-info->linkage

Get the linkage field from a var-info.

Signature
(var-info->linkage x) → linkage
Arguments: x — Guard (var-infop x).
Returns: linkage — Type (linkagep linkage).

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

Definitions and Theorems

Function: var-info->linkage$inline

(defun var-info->linkage$inline (x)
  (declare (xargs :guard (var-infop x)))
  (declare (xargs :guard t))
  (mbe :logic
       (b* ((x (and t x)))
         (linkage-fix (cdr (std::da-nth 1 x))))
       :exec (cdr (std::da-nth 1 x))))

Theorem: linkagep-of-var-info->linkage

(defthm linkagep-of-var-info->linkage
  (b* ((linkage (var-info->linkage$inline x)))
    (linkagep linkage))
  :rule-classes :rewrite)

Theorem: var-info->linkage$inline-of-var-info-fix-x

(defthm var-info->linkage$inline-of-var-info-fix-x
  (equal (var-info->linkage$inline (var-info-fix x))
         (var-info->linkage$inline x)))

Theorem: var-info->linkage$inline-var-info-equiv-congruence-on-x

(defthm var-info->linkage$inline-var-info-equiv-congruence-on-x
  (implies (var-info-equiv x x-equiv)
           (equal (var-info->linkage$inline x)
                  (var-info->linkage$inline x-equiv)))
  :rule-classes :congruence)