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Lucid

Vl-lucid-range->bits

Signature
(vl-lucid-range->bits x ctx) → bits
Arguments: x — Guard (vl-range-p x).; ctx — Guard (any-p ctx).
Returns: bits — Type (and (integer-listp bits) (setp bits)).

Definitions and Theorems

Function: vl-lucid-range->bits

(defun vl-lucid-range->bits (x ctx)
 (declare (xargs :guard (and (vl-range-p x) (any-p ctx))))
 (declare (xargs :guard (vl-range-resolved-p x)))
 (let ((__function__ 'vl-lucid-range->bits))
  (declare (ignorable __function__))
  (b*
   (((vl-range x))
    (msb (vl-resolved->val x.msb))
    (lsb (vl-resolved->val x.lsb))
    (min (min msb lsb))
    (max (max msb lsb))
    ((unless (< max (+ min *vl-lucid-too-many-bits*)))
     (vl-cw-ps-seq
      (vl-cw
       "; ~a0: Whoops, range [~x1:~x2] has too many bits; fudging.~%"
       ctx msb lsb))
     nil))
   (ints-from min (+ 1 max)))))

Theorem: return-type-of-vl-lucid-range->bits

(defthm return-type-of-vl-lucid-range->bits
  (b* ((bits (vl-lucid-range->bits x ctx)))
    (and (integer-listp bits) (setp bits)))
  :rule-classes :rewrite)

Theorem: vl-lucid-range->bits-of-vl-range-fix-x

(defthm vl-lucid-range->bits-of-vl-range-fix-x
  (equal (vl-lucid-range->bits (vl-range-fix x)
                               ctx)
         (vl-lucid-range->bits x ctx)))

Theorem: vl-lucid-range->bits-vl-range-equiv-congruence-on-x

(defthm vl-lucid-range->bits-vl-range-equiv-congruence-on-x
  (implies (vl-range-equiv x x-equiv)
           (equal (vl-lucid-range->bits x ctx)
                  (vl-lucid-range->bits x-equiv ctx)))
  :rule-classes :congruence)

Theorem: vl-lucid-range->bits-of-identity-ctx

(defthm vl-lucid-range->bits-of-identity-ctx
  (equal (vl-lucid-range->bits x (identity ctx))
         (vl-lucid-range->bits x ctx)))

Theorem: vl-lucid-range->bits-equal-congruence-on-ctx

(defthm vl-lucid-range->bits-equal-congruence-on-ctx
  (implies (equal ctx ctx-equiv)
           (equal (vl-lucid-range->bits x ctx)
                  (vl-lucid-range->bits x ctx-equiv)))
  :rule-classes :congruence)