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Function-sinfo

Function-sinfop

Recognizer for function-sinfo structures.

Signature
(function-sinfop x) → *

Definitions and Theorems

Function: function-sinfop

(defun function-sinfop (x)
  (declare (xargs :guard t))
  (let ((__function__ 'function-sinfop))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :fun-sinfo)
         (mbe :logic (and (alistp (cdr x))
                          (equal (strip-cars (cdr x))
                                 '(inputs output)))
              :exec (fty::alist-with-carsp (cdr x)
                                           '(inputs output)))
         (b* ((inputs (cdr (std::da-nth 0 (cdr x))))
              (output (cdr (std::da-nth 1 (cdr x)))))
           (and (var/const-sinfo-listp inputs)
                (typep output))))))

Theorem: consp-when-function-sinfop

(defthm consp-when-function-sinfop
  (implies (function-sinfop x) (consp x))
  :rule-classes :compound-recognizer)