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• Hex-digit-chars-value

Hex-digit-chars-value1

Signature

(hex-digit-chars-value1 x val) → *

Arguments

x — Guard (hex-digit-char-list*p x).

Definitions and Theorems

Function: hex-digit-chars-value1

(defun hex-digit-chars-value1 (x val)
  (declare (type unsigned-byte val))
  (declare (xargs :guard (hex-digit-char-list*p x)))
  (let ((acl2::__function__ 'hex-digit-chars-value1))
    (declare (ignorable acl2::__function__))
    (if (consp x)
        (hex-digit-chars-value1
             (cdr x)
             (the unsigned-byte
                  (+ (the (unsigned-byte 4)
                          (hex-digit-char-value (car x)))
                     (the unsigned-byte
                          (ash (mbe :logic (lnfix val) :exec val)
                               4)))))
      (lnfix val))))