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Initer

Initer-kind

Get the kind (tag) of a initer structure.

Signature
(initer-kind x) → kind
Arguments: x — Guard (initerp x).

Definitions and Theorems

Function: initer-kind$inline

(defun initer-kind$inline (x)
  (declare (xargs :guard (initerp x)))
  (let ((__function__ 'initer-kind))
    (declare (ignorable __function__))
    (mbe :logic (cond ((or (atom x) (eq (car x) :single))
                       :single)
                      (t :list))
         :exec (car x))))

Theorem: initer-kind-possibilities

(defthm initer-kind-possibilities
  (or (equal (initer-kind x) :single)
      (equal (initer-kind x) :list))
  :rule-classes
  ((:forward-chaining :trigger-terms ((initer-kind x)))))