		Search-engine friendly clone of the ACL2 documentation.

Uint

Uintp

Recognizer for uint structures.

Signature
(uintp x) → *

Definitions and Theorems

Function: uintp

(defun uintp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'uintp))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :uint)
         (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)
                (natp value)
                (unsigned-byte-p size value))))))

Theorem: consp-when-uintp

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