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Vl-constint

Vl-constint-p

Recognizer for vl-constint structures.

Signature
(vl-constint-p x) → *

Definitions and Theorems

Function: vl-constint-p

(defun vl-constint-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'vl-constint-p))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :vl-constint)
         (std::prod-consp (cdr x))
         (std::prod-consp (std::prod-car (cdr x)))
         (std::prod-consp (std::prod-cdr (cdr x)))
         (b* ((origwidth (std::prod-car (std::prod-car (cdr x))))
              (value (std::prod-cdr (std::prod-car (cdr x))))
              (origtype (std::prod-car (std::prod-cdr (cdr x))))
              (wasunsized (std::prod-cdr (std::prod-cdr (cdr x)))))
           (and (posp origwidth)
                (natp value)
                (vl-exprtype-p origtype)
                (booleanp wasunsized)
                (< value (expt 2 origwidth)))))))

Theorem: consp-when-vl-constint-p

(defthm consp-when-vl-constint-p
  (implies (vl-constint-p x) (consp x))
  :rule-classes :compound-recognizer)

Subtopics

Vl-constint->msb-bits: Explode a well-typed vl-constint-p atom into MSB-ordered vl-bitlist-p.
Vl-fast-constint-p: Faster version of vl-constint-p, given that vl-atomguts-p is already known.