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Vl-udpedge

Vl-udpedge->prev

Get the prev field from a vl-udpedge.

Signature
(vl-udpedge->prev x) → prev
Arguments: x — Guard (vl-udpedge-p x).
Returns: prev — Type (vl-udpsymbol-p prev).

This is an ordinary field accessor created by defprod.

Definitions and Theorems

Function: vl-udpedge->prev$inline

(defun vl-udpedge->prev$inline (x)
  (declare (xargs :guard (vl-udpedge-p x)))
  (declare (xargs :guard t))
  (let ((__function__ 'vl-udpedge->prev))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and t x)))
           (vl-udpsymbol-fix (std::prod-car (cdr x))))
         :exec (std::prod-car (cdr x)))))

Theorem: vl-udpsymbol-p-of-vl-udpedge->prev

(defthm vl-udpsymbol-p-of-vl-udpedge->prev
  (b* ((prev (vl-udpedge->prev$inline x)))
    (vl-udpsymbol-p prev))
  :rule-classes :rewrite)

Theorem: vl-udpedge->prev$inline-of-vl-udpedge-fix-x

(defthm vl-udpedge->prev$inline-of-vl-udpedge-fix-x
  (equal (vl-udpedge->prev$inline (vl-udpedge-fix x))
         (vl-udpedge->prev$inline x)))

Theorem: vl-udpedge->prev$inline-vl-udpedge-equiv-congruence-on-x

(defthm vl-udpedge->prev$inline-vl-udpedge-equiv-congruence-on-x
  (implies (vl-udpedge-equiv x x-equiv)
           (equal (vl-udpedge->prev$inline x)
                  (vl-udpedge->prev$inline x-equiv)))
  :rule-classes :congruence)