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• Symbol

Symbolp

Recognizer for symbol structures.

Signature

(symbolp x) → *

Definitions and Theorems

Function: symbolp

(defun symbolp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'symbolp))
    (declare (ignorable __function__))
    (cond ((natp x) (b* ((get x)) (natp get)))
          (t (b* ((get x)) (rulenamep get))))))