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• Bin-digit-chars-value

Bin-digit-chars-value1

Signature

(bin-digit-chars-value1 x val) → *

Arguments

x — Guard (bin-digit-char-list*p x).

Definitions and Theorems

Function: bin-digit-chars-value1

(defun bin-digit-chars-value1 (x val)
 (declare (type unsigned-byte val))
 (declare (xargs :guard (bin-digit-char-list*p x)))
 (let ((acl2::__function__ 'bin-digit-chars-value1))
  (declare (ignorable acl2::__function__))
  (mbe :logic
       (if (consp x)
           (bin-digit-chars-value1 (cdr x)
                                   (+ (bin-digit-char-value (car x))
                                      (ash (nfix val) 1)))
         (nfix val))
       :exec
       (if (consp x)
           (bin-digit-chars-value1
                (cdr x)
                (the unsigned-byte
                     (+ (the (unsigned-byte 8)
                             (if (eql (car x) #\1) 1 0))
                        (the unsigned-byte
                             (ash (the unsigned-byte val) 1)))))
         (the unsigned-byte val)))))