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• 4veclist

4veclist-fix

(4veclist-fix x) is a usual fty list fixing function.

Signature

(4veclist-fix x) → fty::newx

Arguments

x — Guard (4veclist-p x).

Returns

fty::newx — Type (4veclist-p fty::newx).

In the logic, we apply 4vec-fix to each member of the x. In the execution, none of that is actually necessary and this is just an inlined identity function.

Definitions and Theorems

Function: 4veclist-fix$inline

(defun 4veclist-fix$inline (x)
  (declare (xargs :guard (4veclist-p x)))
  (let ((__function__ '4veclist-fix))
    (declare (ignorable __function__))
    (mbe :logic
         (if (atom x)
             nil
           (cons (4vec-fix (car x))
                 (4veclist-fix (cdr x))))
         :exec x)))

Theorem: 4veclist-p-of-4veclist-fix

(defthm 4veclist-p-of-4veclist-fix
  (b* ((fty::newx (4veclist-fix$inline x)))
    (4veclist-p fty::newx))
  :rule-classes :rewrite)

Theorem: 4veclist-fix-when-4veclist-p

(defthm 4veclist-fix-when-4veclist-p
  (implies (4veclist-p x)
           (equal (4veclist-fix x) x)))

Function: 4veclist-equiv$inline

(defun 4veclist-equiv$inline (x y)
  (declare (xargs :guard (and (4veclist-p x) (4veclist-p y))))
  (equal (4veclist-fix x)
         (4veclist-fix y)))

Theorem: 4veclist-equiv-is-an-equivalence

(defthm 4veclist-equiv-is-an-equivalence
  (and (booleanp (4veclist-equiv x y))
       (4veclist-equiv x x)
       (implies (4veclist-equiv x y)
                (4veclist-equiv y x))
       (implies (and (4veclist-equiv x y)
                     (4veclist-equiv y z))
                (4veclist-equiv x z)))
  :rule-classes (:equivalence))

Theorem: 4veclist-equiv-implies-equal-4veclist-fix-1

(defthm 4veclist-equiv-implies-equal-4veclist-fix-1
  (implies (4veclist-equiv x x-equiv)
           (equal (4veclist-fix x)
                  (4veclist-fix x-equiv)))
  :rule-classes (:congruence))

Theorem: 4veclist-fix-under-4veclist-equiv

(defthm 4veclist-fix-under-4veclist-equiv
  (4veclist-equiv (4veclist-fix x) x)
  :rule-classes (:rewrite :rewrite-quoted-constant))

Theorem: equal-of-4veclist-fix-1-forward-to-4veclist-equiv

(defthm equal-of-4veclist-fix-1-forward-to-4veclist-equiv
  (implies (equal (4veclist-fix x) y)
           (4veclist-equiv x y))
  :rule-classes :forward-chaining)

Theorem: equal-of-4veclist-fix-2-forward-to-4veclist-equiv

(defthm equal-of-4veclist-fix-2-forward-to-4veclist-equiv
  (implies (equal x (4veclist-fix y))
           (4veclist-equiv x y))
  :rule-classes :forward-chaining)

Theorem: 4veclist-equiv-of-4veclist-fix-1-forward

(defthm 4veclist-equiv-of-4veclist-fix-1-forward
  (implies (4veclist-equiv (4veclist-fix x) y)
           (4veclist-equiv x y))
  :rule-classes :forward-chaining)

Theorem: 4veclist-equiv-of-4veclist-fix-2-forward

(defthm 4veclist-equiv-of-4veclist-fix-2-forward
  (implies (4veclist-equiv x (4veclist-fix y))
           (4veclist-equiv x y))
  :rule-classes :forward-chaining)

Theorem: car-of-4veclist-fix-x-under-4vec-equiv

(defthm car-of-4veclist-fix-x-under-4vec-equiv
  (4vec-equiv (car (4veclist-fix x))
              (car x)))

Theorem: car-4veclist-equiv-congruence-on-x-under-4vec-equiv

(defthm car-4veclist-equiv-congruence-on-x-under-4vec-equiv
  (implies (4veclist-equiv x x-equiv)
           (4vec-equiv (car x) (car x-equiv)))
  :rule-classes :congruence)

Theorem: cdr-of-4veclist-fix-x-under-4veclist-equiv

(defthm cdr-of-4veclist-fix-x-under-4veclist-equiv
  (4veclist-equiv (cdr (4veclist-fix x))
                  (cdr x)))

Theorem: cdr-4veclist-equiv-congruence-on-x-under-4veclist-equiv

(defthm cdr-4veclist-equiv-congruence-on-x-under-4veclist-equiv
  (implies (4veclist-equiv x x-equiv)
           (4veclist-equiv (cdr x) (cdr x-equiv)))
  :rule-classes :congruence)

Theorem: cons-of-4vec-fix-x-under-4veclist-equiv

(defthm cons-of-4vec-fix-x-under-4veclist-equiv
  (4veclist-equiv (cons (4vec-fix x) y)
                  (cons x y)))

Theorem: cons-4vec-equiv-congruence-on-x-under-4veclist-equiv

(defthm cons-4vec-equiv-congruence-on-x-under-4veclist-equiv
  (implies (4vec-equiv x x-equiv)
           (4veclist-equiv (cons x y)
                           (cons x-equiv y)))
  :rule-classes :congruence)

Theorem: cons-of-4veclist-fix-y-under-4veclist-equiv

(defthm cons-of-4veclist-fix-y-under-4veclist-equiv
  (4veclist-equiv (cons x (4veclist-fix y))
                  (cons x y)))

Theorem: cons-4veclist-equiv-congruence-on-y-under-4veclist-equiv

(defthm cons-4veclist-equiv-congruence-on-y-under-4veclist-equiv
  (implies (4veclist-equiv y y-equiv)
           (4veclist-equiv (cons x y)
                           (cons x y-equiv)))
  :rule-classes :congruence)

Theorem: consp-of-4veclist-fix

(defthm consp-of-4veclist-fix
  (equal (consp (4veclist-fix x))
         (consp x)))

Theorem: 4veclist-fix-under-iff

(defthm 4veclist-fix-under-iff
  (iff (4veclist-fix x) (consp x)))

Theorem: 4veclist-fix-of-cons

(defthm 4veclist-fix-of-cons
  (equal (4veclist-fix (cons a x))
         (cons (4vec-fix a) (4veclist-fix x))))

Theorem: len-of-4veclist-fix

(defthm len-of-4veclist-fix
  (equal (len (4veclist-fix x)) (len x)))

Theorem: 4veclist-fix-of-append

(defthm 4veclist-fix-of-append
  (equal (4veclist-fix (append std::a std::b))
         (append (4veclist-fix std::a)
                 (4veclist-fix std::b))))

Theorem: 4veclist-fix-of-repeat

(defthm 4veclist-fix-of-repeat
  (equal (4veclist-fix (repeat acl2::n x))
         (repeat acl2::n (4vec-fix x))))

Theorem: list-equiv-refines-4veclist-equiv

(defthm list-equiv-refines-4veclist-equiv
  (implies (list-equiv x y)
           (4veclist-equiv x y))
  :rule-classes :refinement)

Theorem: nth-of-4veclist-fix

(defthm nth-of-4veclist-fix
  (equal (nth acl2::n (4veclist-fix x))
         (if (< (nfix acl2::n) (len x))
             (4vec-fix (nth acl2::n x))
           nil)))

Theorem: 4veclist-equiv-implies-4veclist-equiv-append-1

(defthm 4veclist-equiv-implies-4veclist-equiv-append-1
  (implies (4veclist-equiv x fty::x-equiv)
           (4veclist-equiv (append x y)
                           (append fty::x-equiv y)))
  :rule-classes (:congruence))

Theorem: 4veclist-equiv-implies-4veclist-equiv-append-2

(defthm 4veclist-equiv-implies-4veclist-equiv-append-2
  (implies (4veclist-equiv y fty::y-equiv)
           (4veclist-equiv (append x y)
                           (append x fty::y-equiv)))
  :rule-classes (:congruence))

Theorem: 4veclist-equiv-implies-4veclist-equiv-nthcdr-2

(defthm 4veclist-equiv-implies-4veclist-equiv-nthcdr-2
  (implies (4veclist-equiv acl2::l l-equiv)
           (4veclist-equiv (nthcdr acl2::n acl2::l)
                           (nthcdr acl2::n l-equiv)))
  :rule-classes (:congruence))

Theorem: 4veclist-equiv-implies-4veclist-equiv-take-2

(defthm 4veclist-equiv-implies-4veclist-equiv-take-2
  (implies (4veclist-equiv acl2::l l-equiv)
           (4veclist-equiv (take acl2::n acl2::l)
                           (take acl2::n l-equiv)))
  :rule-classes (:congruence))