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Width-of-svex-extn

Width-of-svex-extn-p

Recognizer for width-of-svex-extn structures.

Signature
(width-of-svex-extn-p x) → *

Definitions and Theorems

Function: width-of-svex-extn-p

(defun width-of-svex-extn-p (x)
  (declare (xargs :guard t))
  (let ((acl2::__function__ 'width-of-svex-extn-p))
    (declare (ignorable acl2::__function__))
    (and (consp x)
         (consp (cdr x))
         (b* ((fn (car x))
              (arg-len (car (cdr x)))
              (formula (cdr (cdr x))))
           (and (svex-foreign-fnsym-p fn)
                (posp arg-len)
                (width-of-svex-extn-formula-p formula))))))

Theorem: consp-when-width-of-svex-extn-p

(defthm consp-when-width-of-svex-extn-p
  (implies (width-of-svex-extn-p x)
           (consp x))
  :rule-classes :compound-recognizer)