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3col4vecline

3col4vecline-p

Recognizer for 3col4vecline structures.

Signature
(3col4vecline-p x) → *

Definitions and Theorems

Function: 3col4vecline-p

(defun 3col4vecline-p (x)
  (declare (xargs :guard t))
  (let ((__function__ '3col4vecline-p))
    (declare (ignorable __function__))
    (and (std::prod-consp x)
         (std::prod-consp (std::prod-cdr x))
         (b* ((label (std::prod-car x))
              (val (std::prod-car (std::prod-cdr x)))
              (val2 (std::prod-cdr (std::prod-cdr x))))
           (and (msgp label)
                (maybe-4vec-p val)
                (maybe-4vec-p val2))))))