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Unop-result

Unop-result-kind

Get the kind (tag) of a unop-result structure.

Signature
(unop-result-kind acl2::x) → kind
Arguments: acl2::x — Guard (unop-resultp acl2::x).

Definitions and Theorems

Function: unop-result-kind$inline

(defun unop-result-kind$inline (acl2::x)
  (declare (xargs :guard (unop-resultp acl2::x)))
  (let ((__function__ 'unop-result-kind))
    (declare (ignorable __function__))
    (cond ((unopp acl2::x) :ok) (t :err))))

Theorem: unop-result-kind-possibilities

(defthm unop-result-kind-possibilities
  (or (equal (unop-result-kind acl2::x) :ok)
      (equal (unop-result-kind acl2::x) :err))
  :rule-classes
  ((:forward-chaining :trigger-terms ((unop-result-kind acl2::x)))))