Get the kind (tag) of a type-list-result structure.
(type-list-result-kind acl2::x) → kind
Function:
(defun type-list-result-kind$inline (acl2::x) (declare (xargs :guard (type-list-resultp acl2::x))) (let ((__function__ 'type-list-result-kind)) (declare (ignorable __function__)) (cond ((type-listp acl2::x) :ok) (t :err))))
Theorem:
(defthm type-list-result-kind-possibilities (or (equal (type-list-result-kind acl2::x) :ok) (equal (type-list-result-kind acl2::x) :err)) :rule-classes ((:forward-chaining :trigger-terms ((type-list-result-kind acl2::x)))))