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    • Constraint-result

    Constraint-result-equiv

    Basic equivalence relation for constraint-result structures.

    Definitions and Theorems

    Function: constraint-result-equiv$inline

    (defun constraint-result-equiv$inline (acl2::x acl2::y)
      (declare (xargs :guard (and (constraint-resultp acl2::x)
                                  (constraint-resultp acl2::y))))
      (equal (constraint-result-fix acl2::x)
             (constraint-result-fix acl2::y)))

    Theorem: constraint-result-equiv-is-an-equivalence

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

    Theorem: constraint-result-equiv-implies-equal-constraint-result-fix-1

    (defthm
          constraint-result-equiv-implies-equal-constraint-result-fix-1
      (implies (constraint-result-equiv acl2::x x-equiv)
               (equal (constraint-result-fix acl2::x)
                      (constraint-result-fix x-equiv)))
      :rule-classes (:congruence))

    Theorem: constraint-result-fix-under-constraint-result-equiv

    (defthm constraint-result-fix-under-constraint-result-equiv
      (constraint-result-equiv (constraint-result-fix acl2::x)
                               acl2::x)
      :rule-classes (:rewrite :rewrite-quoted-constant))

    Theorem: equal-of-constraint-result-fix-1-forward-to-constraint-result-equiv

    (defthm
     equal-of-constraint-result-fix-1-forward-to-constraint-result-equiv
     (implies (equal (constraint-result-fix acl2::x)
                     acl2::y)
              (constraint-result-equiv acl2::x acl2::y))
     :rule-classes :forward-chaining)

    Theorem: equal-of-constraint-result-fix-2-forward-to-constraint-result-equiv

    (defthm
     equal-of-constraint-result-fix-2-forward-to-constraint-result-equiv
     (implies (equal acl2::x (constraint-result-fix acl2::y))
              (constraint-result-equiv acl2::x acl2::y))
     :rule-classes :forward-chaining)

    Theorem: constraint-result-equiv-of-constraint-result-fix-1-forward

    (defthm constraint-result-equiv-of-constraint-result-fix-1-forward
      (implies (constraint-result-equiv (constraint-result-fix acl2::x)
                                        acl2::y)
               (constraint-result-equiv acl2::x acl2::y))
      :rule-classes :forward-chaining)

    Theorem: constraint-result-equiv-of-constraint-result-fix-2-forward

    (defthm constraint-result-equiv-of-constraint-result-fix-2-forward
     (implies
       (constraint-result-equiv acl2::x (constraint-result-fix acl2::y))
       (constraint-result-equiv acl2::x acl2::y))
     :rule-classes :forward-chaining)