Basic equivalence relation for sdm-instruction-table-entry structures.
Function:
(defun sdm-instruction-table-entry-equiv$inline (x y) (declare (xargs :guard (and (sdm-instruction-table-entry-p x) (sdm-instruction-table-entry-p y)))) (equal (sdm-instruction-table-entry-fix x) (sdm-instruction-table-entry-fix y)))
Theorem:
(defthm sdm-instruction-table-entry-equiv-is-an-equivalence (and (booleanp (sdm-instruction-table-entry-equiv x y)) (sdm-instruction-table-entry-equiv x x) (implies (sdm-instruction-table-entry-equiv x y) (sdm-instruction-table-entry-equiv y x)) (implies (and (sdm-instruction-table-entry-equiv x y) (sdm-instruction-table-entry-equiv y z)) (sdm-instruction-table-entry-equiv x z))) :rule-classes (:equivalence))
Theorem:
(defthm sdm-instruction-table-entry-equiv-implies-equal-sdm-instruction-table-entry-fix-1 (implies (sdm-instruction-table-entry-equiv x x-equiv) (equal (sdm-instruction-table-entry-fix x) (sdm-instruction-table-entry-fix x-equiv))) :rule-classes (:congruence))
Theorem:
(defthm sdm-instruction-table-entry-fix-under-sdm-instruction-table-entry-equiv (sdm-instruction-table-entry-equiv (sdm-instruction-table-entry-fix x) x) :rule-classes (:rewrite :rewrite-quoted-constant))
Theorem:
(defthm equal-of-sdm-instruction-table-entry-fix-1-forward-to-sdm-instruction-table-entry-equiv (implies (equal (sdm-instruction-table-entry-fix x) y) (sdm-instruction-table-entry-equiv x y)) :rule-classes :forward-chaining)
Theorem:
(defthm equal-of-sdm-instruction-table-entry-fix-2-forward-to-sdm-instruction-table-entry-equiv (implies (equal x (sdm-instruction-table-entry-fix y)) (sdm-instruction-table-entry-equiv x y)) :rule-classes :forward-chaining)
Theorem:
(defthm sdm-instruction-table-entry-equiv-of-sdm-instruction-table-entry-fix-1-forward (implies (sdm-instruction-table-entry-equiv (sdm-instruction-table-entry-fix x) y) (sdm-instruction-table-entry-equiv x y)) :rule-classes :forward-chaining)
Theorem:
(defthm sdm-instruction-table-entry-equiv-of-sdm-instruction-table-entry-fix-2-forward (implies (sdm-instruction-table-entry-equiv x (sdm-instruction-table-entry-fix y)) (sdm-instruction-table-entry-equiv x y)) :rule-classes :forward-chaining)