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A4vec-operations

A4vec-resand

Symbolic version of 4vec-resand.

Signature
(a4vec-resand a b) → res
Arguments: a — Guard (a4vec-p a).; b — Guard (a4vec-p b).
Returns: res — Type (a4vec-p res).

Definitions and Theorems

Function: a4vec-resand

(defun a4vec-resand (a b)
  (declare (xargs :guard (and (a4vec-p a) (a4vec-p b))))
  (let ((__function__ 'a4vec-resand))
    (declare (ignorable __function__))
    (b* (((a4vec a)) ((a4vec b)))
      (a4vec (aig-logand-sss (aig-logior-ss a.upper a.lower)
                             (aig-logior-ss b.upper b.lower)
                             (aig-logior-ss a.upper b.upper))
             (aig-logand-ss a.lower b.lower)))))

Theorem: a4vec-p-of-a4vec-resand

(defthm a4vec-p-of-a4vec-resand
  (b* ((res (a4vec-resand a b)))
    (a4vec-p res))
  :rule-classes :rewrite)

Theorem: a4vec-resand-correct

(defthm a4vec-resand-correct
  (equal (a4vec-eval (a4vec-resand x y) env)
         (4vec-resand (a4vec-eval x env)
                      (a4vec-eval y env))))

Theorem: a4vec-resand-of-a4vec-fix-a

(defthm a4vec-resand-of-a4vec-fix-a
  (equal (a4vec-resand (a4vec-fix a) b)
         (a4vec-resand a b)))

Theorem: a4vec-resand-a4vec-equiv-congruence-on-a

(defthm a4vec-resand-a4vec-equiv-congruence-on-a
  (implies (a4vec-equiv a a-equiv)
           (equal (a4vec-resand a b)
                  (a4vec-resand a-equiv b)))
  :rule-classes :congruence)

Theorem: a4vec-resand-of-a4vec-fix-b

(defthm a4vec-resand-of-a4vec-fix-b
  (equal (a4vec-resand a (a4vec-fix b))
         (a4vec-resand a b)))

Theorem: a4vec-resand-a4vec-equiv-congruence-on-b

(defthm a4vec-resand-a4vec-equiv-congruence-on-b
  (implies (a4vec-equiv b b-equiv)
           (equal (a4vec-resand a b)
                  (a4vec-resand a b-equiv)))
  :rule-classes :congruence)