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Inst

Inst->excep

Get the excep field from a inst.

Signature
(inst->excep x) → excep
Arguments: x — Guard (inst-p x).
Returns: excep — Type (exception-desc-p excep).

This is an ordinary field accessor created by defprod.

Definitions and Theorems

Function: inst->excep$inline

(defun inst->excep$inline (x)
  (declare (xargs :guard (inst-p x)))
  (declare (xargs :guard t))
  (let ((__function__ 'inst->excep))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and t x)))
           (exception-desc-fix
                (std::prod-cdr (std::prod-cdr (std::prod-cdr x)))))
         :exec (std::prod-cdr (std::prod-cdr (std::prod-cdr x))))))

Theorem: exception-desc-p-of-inst->excep

(defthm exception-desc-p-of-inst->excep
  (b* ((excep (inst->excep$inline x)))
    (exception-desc-p excep))
  :rule-classes :rewrite)

Theorem: inst->excep$inline-of-inst-fix-x

(defthm inst->excep$inline-of-inst-fix-x
  (equal (inst->excep$inline (inst-fix x))
         (inst->excep$inline x)))

Theorem: inst->excep$inline-inst-equiv-congruence-on-x

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