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Fun-spec

Fun-specp

Recognizer for fun-spec structures.

Signature
(fun-specp x) → *

Definitions and Theorems

Function: fun-specp

(defun fun-specp (x)
  (declare (xargs :guard t))
  (and (consp x)
       (cond ((or (atom x) (eq (car x) :inline))
              (and (b* ((uscores (cdr x)))
                     (keyword-uscores-p uscores))))
             (t (and (eq (car x) :noreturn)
                     (and (eq (cdr x) nil))
                     (b* nil t))))))

Theorem: consp-when-fun-specp

(defthm consp-when-fun-specp
  (implies (fun-specp x) (consp x))
  :rule-classes :compound-recognizer)