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Node

Proper-node-p

Recognizer for any node except for the special constant node.

Signature
(proper-node-p x) → *

Definitions and Theorems

Function: proper-node-p

(defun proper-node-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'proper-node-p))
    (declare (ignorable __function__))
    (and (node-p x)
         (not (eq (stype x) :const)))))