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Irr-value

An irrelevant value.

This can be used as a dummy value of the type.

Function: irr-value

(defun irr-value nil
  (declare (xargs :guard t))
  (let ((__function__ 'irr-value))
    (declare (ignorable __function__))
    (value-null)))

Theorem: valuep-of-irr-value

(defthm valuep-of-irr-value
  (b* ((acl2::irr (irr-value)))
    (valuep acl2::irr))
  :rule-classes :rewrite)