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Input-title-option-result

Input-title-option-result-kind

Get the kind (tag) of a input-title-option-result structure.

Signature
(input-title-option-result-kind acl2::x) → kind
Arguments: acl2::x — Guard (input-title-option-resultp acl2::x).

Definitions and Theorems

Function: input-title-option-result-kind$inline

(defun input-title-option-result-kind$inline (acl2::x)
  (declare (xargs :guard (input-title-option-resultp acl2::x)))
  (let ((__function__ 'input-title-option-result-kind))
    (declare (ignorable __function__))
    (cond ((input-title-optionp acl2::x) :ok)
          (t :err))))

Theorem: input-title-option-result-kind-possibilities

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