		Search-engine friendly clone of the ACL2 documentation.

2vecx

2vecx-p

Recognizer for 2vecxes, with a 4vec-p guard.

Signature
(2vecx-p x) → *
Arguments: x — Guard (4vec-p x).

Definitions and Theorems

Function: 2vecx-p

(defun 2vecx-p (x)
  (declare (xargs :guard (4vec-p x)))
  (let ((__function__ '2vecx-p))
    (declare (ignorable __function__))
    (mbe :logic
         (let ((x (4vec-fix x)))
           (or (2vec-p x) (equal x (4vec-x))))
         :exec (or (atom x) (equal x (4vec-x))))))