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Fnsym

Fnsym-p

Recognizer for valid fnsyms.

Signature
(fnsym-p x) → *

Definitions and Theorems

Function: fnsym-p

(defun fnsym-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'fnsym-p))
    (declare (ignorable __function__))
    (and (symbolp x)
         (not (eq x 'quote))
         (not (keywordp x)))))

Theorem: fnsym-p-compound-recognizer

(defthm fnsym-p-compound-recognizer
  (implies (fnsym-p x) (symbolp x))
  :rule-classes :compound-recognizer)