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Utilities

Vl-maybe-integer-listp

(vl-maybe-integer-listp x) recognizes lists where every element satisfies maybe-integerp.

Signature
(vl-maybe-integer-listp x) → std::bool

This is an ordinary deflist. It is "strict" in that it requires x to be a "properly" nil-terminated list.

Definitions and Theorems

Function: vl-maybe-integer-listp

(defun vl-maybe-integer-listp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'vl-maybe-integer-listp))
    (declare (ignorable __function__))
    (if (consp x)
        (and (maybe-integerp (car x))
             (vl-maybe-integer-listp (cdr x)))
      (null x))))

Theorem: integer-listp-when-no-nils-in-vl-maybe-integer-listp

(defthm integer-listp-when-no-nils-in-vl-maybe-integer-listp
  (implies (and (not (member-equal nil x))
                (vl-maybe-integer-listp x))
           (integer-listp x)))

Subtopics

Vl-maybe-integer-listp-basics: Basic theorems about vl-maybe-integer-listp, generated by deflist.