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Vl-range-msbidx

Extract the MSB (left) index from a resolved vl-range.

Signature

(vl-range-msbidx x) → msb

Arguments

x — Guard (and (vl-range-p x) (vl-range-resolved-p x)).

Returns

msb — Type (integerp msb).

Definitions and Theorems

Function: vl-range-msbidx

(defun vl-range-msbidx (x)
  (declare (xargs :guard (and (vl-range-p x)
                              (vl-range-resolved-p x))))
  (let ((__function__ 'vl-range-msbidx))
    (declare (ignorable __function__))
    (b* (((vl-range x) x))
      (vl-resolved->val x.msb))))

Theorem: integerp-of-vl-range-msbidx

(defthm integerp-of-vl-range-msbidx
  (b* ((msb (vl-range-msbidx x)))
    (integerp msb))
  :rule-classes :type-prescription)