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• Sbyte64-list

Sbyte64-list-equiv

Basic equivalence relation for sbyte64-list structures.

Definitions and Theorems

Function: sbyte64-list-equiv$inline

(defun sbyte64-list-equiv$inline (x y)
  (declare (xargs :guard (and (sbyte64-listp x)
                              (sbyte64-listp y))))
  (equal (sbyte64-list-fix x)
         (sbyte64-list-fix y)))

Theorem: sbyte64-list-equiv-is-an-equivalence

(defthm sbyte64-list-equiv-is-an-equivalence
  (and (booleanp (sbyte64-list-equiv x y))
       (sbyte64-list-equiv x x)
       (implies (sbyte64-list-equiv x y)
                (sbyte64-list-equiv y x))
       (implies (and (sbyte64-list-equiv x y)
                     (sbyte64-list-equiv y z))
                (sbyte64-list-equiv x z)))
  :rule-classes (:equivalence))

Theorem: sbyte64-list-equiv-implies-equal-sbyte64-list-fix-1

(defthm sbyte64-list-equiv-implies-equal-sbyte64-list-fix-1
  (implies (sbyte64-list-equiv x x-equiv)
           (equal (sbyte64-list-fix x)
                  (sbyte64-list-fix x-equiv)))
  :rule-classes (:congruence))

Theorem: sbyte64-list-fix-under-sbyte64-list-equiv

(defthm sbyte64-list-fix-under-sbyte64-list-equiv
  (sbyte64-list-equiv (sbyte64-list-fix x)
                      x)
  :rule-classes (:rewrite :rewrite-quoted-constant))

Theorem: equal-of-sbyte64-list-fix-1-forward-to-sbyte64-list-equiv

(defthm equal-of-sbyte64-list-fix-1-forward-to-sbyte64-list-equiv
  (implies (equal (sbyte64-list-fix x) y)
           (sbyte64-list-equiv x y))
  :rule-classes :forward-chaining)

Theorem: equal-of-sbyte64-list-fix-2-forward-to-sbyte64-list-equiv

(defthm equal-of-sbyte64-list-fix-2-forward-to-sbyte64-list-equiv
  (implies (equal x (sbyte64-list-fix y))
           (sbyte64-list-equiv x y))
  :rule-classes :forward-chaining)

Theorem: sbyte64-list-equiv-of-sbyte64-list-fix-1-forward

(defthm sbyte64-list-equiv-of-sbyte64-list-fix-1-forward
  (implies (sbyte64-list-equiv (sbyte64-list-fix x)
                               y)
           (sbyte64-list-equiv x y))
  :rule-classes :forward-chaining)

Theorem: sbyte64-list-equiv-of-sbyte64-list-fix-2-forward

(defthm sbyte64-list-equiv-of-sbyte64-list-fix-2-forward
  (implies (sbyte64-list-equiv x (sbyte64-list-fix y))
           (sbyte64-list-equiv x y))
  :rule-classes :forward-chaining)