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Boolean-result

Boolean-result-kind

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

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

Definitions and Theorems

Function: boolean-result-kind$inline

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

Theorem: boolean-result-kind-possibilities

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