		Search-engine friendly clone of the ACL2 documentation.

Bit-blasting

Nat-bool-a4vec-lower-boundp

Signature
(nat-bool-a4vec-lower-boundp bound x) → *
Arguments: bound — Guard (natp bound).; x — Guard (nat-bool-a4vec-p! x).

Definitions and Theorems

Function: nat-bool-a4vec-lower-boundp

(defun nat-bool-a4vec-lower-boundp (bound x)
  (declare (xargs :guard (and (natp bound)
                              (nat-bool-a4vec-p! x))))
  (let ((__function__ 'nat-bool-a4vec-lower-boundp))
    (declare (ignorable __function__))
    (b* (((a4vec x) x))
      (and (nat-bool-list-lower-boundp bound x.upper)
           (nat-bool-list-lower-boundp bound x.lower)))))

Theorem: nat-bool-a4vec-vars-nonmember-by-lower-bound

(defthm nat-bool-a4vec-vars-nonmember-by-lower-bound
  (implies (and (nat-bool-a4vec-lower-boundp bound x)
                (< v (nfix bound))
                (nat-bool-a4vec-p x))
           (not (member v (nat-bool-a4vec-vars x)))))

Theorem: nat-bool-a4vec-lower-boundp-lower

(defthm nat-bool-a4vec-lower-boundp-lower
  (implies (and (nat-bool-a4vec-lower-boundp bound x)
                (<= (nfix n) (nfix bound)))
           (nat-bool-a4vec-lower-boundp n x)))

Theorem: nat-bool-a4vec-lower-boundp-of-nfix-bound

(defthm nat-bool-a4vec-lower-boundp-of-nfix-bound
  (equal (nat-bool-a4vec-lower-boundp (nfix bound)
                                      x)
         (nat-bool-a4vec-lower-boundp bound x)))

Theorem: nat-bool-a4vec-lower-boundp-nat-equiv-congruence-on-bound

(defthm nat-bool-a4vec-lower-boundp-nat-equiv-congruence-on-bound
  (implies (nat-equiv bound bound-equiv)
           (equal (nat-bool-a4vec-lower-boundp bound x)
                  (nat-bool-a4vec-lower-boundp bound-equiv x)))
  :rule-classes :congruence)

Theorem: nat-bool-a4vec-lower-boundp-of-a4vec-fix-x

(defthm nat-bool-a4vec-lower-boundp-of-a4vec-fix-x
  (equal (nat-bool-a4vec-lower-boundp bound (a4vec-fix x))
         (nat-bool-a4vec-lower-boundp bound x)))

Theorem: nat-bool-a4vec-lower-boundp-a4vec-equiv-congruence-on-x

(defthm nat-bool-a4vec-lower-boundp-a4vec-equiv-congruence-on-x
  (implies (a4vec-equiv x x-equiv)
           (equal (nat-bool-a4vec-lower-boundp bound x)
                  (nat-bool-a4vec-lower-boundp bound x-equiv)))
  :rule-classes :congruence)