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    • Dec-integer-literal

    Dec-integer-literal-fix

    Fixing function for dec-integer-literal structures.

    Signature
    (dec-integer-literal-fix x) → new-x
    Arguments
    x — Guard (dec-integer-literalp x).
    Returns
    new-x — Type (dec-integer-literalp new-x).

    Definitions and Theorems

    Function: dec-integer-literal-fix$inline

    (defun dec-integer-literal-fix$inline (x)
     (declare (xargs :guard (dec-integer-literalp x)))
     (let ((__function__ 'dec-integer-literal-fix))
      (declare (ignorable __function__))
      (mbe
       :logic
       (b*
        ((digits/uscores
              (decdig/uscore-list-fix (std::da-nth 0 (cdr x))))
         (suffix?
            (optional-integer-type-suffix-fix (std::da-nth 1 (cdr x)))))
        (let ((digits/uscores
                   (if (decdig/uscore-list-wfp digits/uscores)
                       digits/uscores
                     (list (decdig/uscore-digit (char-code #\0))))))
          (cons :dec-integer-lit (list digits/uscores suffix?))))
       :exec x)))

    Theorem: dec-integer-literalp-of-dec-integer-literal-fix

    (defthm dec-integer-literalp-of-dec-integer-literal-fix
      (b* ((new-x (dec-integer-literal-fix$inline x)))
        (dec-integer-literalp new-x))
      :rule-classes :rewrite)

    Theorem: dec-integer-literal-fix-when-dec-integer-literalp

    (defthm dec-integer-literal-fix-when-dec-integer-literalp
      (implies (dec-integer-literalp x)
               (equal (dec-integer-literal-fix x) x)))

    Function: dec-integer-literal-equiv$inline

    (defun dec-integer-literal-equiv$inline (acl2::x acl2::y)
      (declare (xargs :guard (and (dec-integer-literalp acl2::x)
                                  (dec-integer-literalp acl2::y))))
      (equal (dec-integer-literal-fix acl2::x)
             (dec-integer-literal-fix acl2::y)))

    Theorem: dec-integer-literal-equiv-is-an-equivalence

    (defthm dec-integer-literal-equiv-is-an-equivalence
      (and (booleanp (dec-integer-literal-equiv x y))
           (dec-integer-literal-equiv x x)
           (implies (dec-integer-literal-equiv x y)
                    (dec-integer-literal-equiv y x))
           (implies (and (dec-integer-literal-equiv x y)
                         (dec-integer-literal-equiv y z))
                    (dec-integer-literal-equiv x z)))
      :rule-classes (:equivalence))

    Theorem: dec-integer-literal-equiv-implies-equal-dec-integer-literal-fix-1

    (defthm
      dec-integer-literal-equiv-implies-equal-dec-integer-literal-fix-1
      (implies (dec-integer-literal-equiv acl2::x x-equiv)
               (equal (dec-integer-literal-fix acl2::x)
                      (dec-integer-literal-fix x-equiv)))
      :rule-classes (:congruence))

    Theorem: dec-integer-literal-fix-under-dec-integer-literal-equiv

    (defthm dec-integer-literal-fix-under-dec-integer-literal-equiv
      (dec-integer-literal-equiv (dec-integer-literal-fix acl2::x)
                                 acl2::x)
      :rule-classes (:rewrite :rewrite-quoted-constant))

    Theorem: equal-of-dec-integer-literal-fix-1-forward-to-dec-integer-literal-equiv

    (defthm
     equal-of-dec-integer-literal-fix-1-forward-to-dec-integer-literal-equiv
     (implies (equal (dec-integer-literal-fix acl2::x)
                     acl2::y)
              (dec-integer-literal-equiv acl2::x acl2::y))
     :rule-classes :forward-chaining)

    Theorem: equal-of-dec-integer-literal-fix-2-forward-to-dec-integer-literal-equiv

    (defthm
     equal-of-dec-integer-literal-fix-2-forward-to-dec-integer-literal-equiv
     (implies (equal acl2::x
                     (dec-integer-literal-fix acl2::y))
              (dec-integer-literal-equiv acl2::x acl2::y))
     :rule-classes :forward-chaining)

    Theorem: dec-integer-literal-equiv-of-dec-integer-literal-fix-1-forward

    (defthm
         dec-integer-literal-equiv-of-dec-integer-literal-fix-1-forward
      (implies
           (dec-integer-literal-equiv (dec-integer-literal-fix acl2::x)
                                      acl2::y)
           (dec-integer-literal-equiv acl2::x acl2::y))
      :rule-classes :forward-chaining)

    Theorem: dec-integer-literal-equiv-of-dec-integer-literal-fix-2-forward

    (defthm
         dec-integer-literal-equiv-of-dec-integer-literal-fix-2-forward
      (implies
           (dec-integer-literal-equiv acl2::x
                                      (dec-integer-literal-fix acl2::y))
           (dec-integer-literal-equiv acl2::x acl2::y))
      :rule-classes :forward-chaining)