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2vecnatx

2vecnatx-p

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

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

Definitions and Theorems

Function: 2vecnatx-p$inline

(defun 2vecnatx-p$inline (x)
  (declare (xargs :guard (4vec-p x)))
  (let ((__function__ '2vecnatx-p))
    (declare (ignorable __function__))
    (mbe :logic
         (let ((x (4vec-fix x)))
           (or (and (2vec-p x) (<= 0 (2vec->val x)))
               (equal x (4vec-x))))
         :exec
         (if (2vec-p x)
             (<= 0 (2vec->val x))
           (equal x (4vec-x))))))