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Intp

Recognizer for int structures.

Signature
(intp x) → *

Definitions and Theorems

Function: intp

(defun intp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'intp))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :int)
         (true-listp (cdr x))
         (eql (len (cdr x)) 2)
         (b* ((size (std::da-nth 0 (cdr x)))
              (value (std::da-nth 1 (cdr x))))
           (and (bit-size-p size)
                (integerp value)
                (signed-byte-p size value))))))

Theorem: consp-when-intp

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