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Defun-sk-queries

Defun-sk-rewrite-kind-p

Kinds of rewrite rules associated to defun-sk functions with the universal quantifier.

These correspond to the values of the :rewrite option of defun-sk, with :custom standing for anything but :default or :direct.

This is an ordinary std::defenum.

Function: defun-sk-rewrite-kind-p

(defun defun-sk-rewrite-kind-p (x)
  (declare (xargs :guard t))
  (or (eq x ':default)
      (eq x ':direct)
      (eq x ':custom)))

Theorem: type-when-defun-sk-rewrite-kind-p

(defthm type-when-defun-sk-rewrite-kind-p
  (implies (defun-sk-rewrite-kind-p x)
           (if (symbolp x)
               (if (not (equal x 't))
                   (not (equal x 'nil))
                 'nil)
             'nil))
  :rule-classes :compound-recognizer)