title: A better Excel Bin2Dec function (signed)?
body: <p>I was wondering if anyone had written a better Bin2Dec VBA macro for Excel in than the one included.  I'm looking for a function that can take arbitrarily large binary numbers (within ~16 bits), and uses the signed bit.  Excel's BIN2DEC function overflows after 12 bits, and it generally very ugly (Excel isn't too great since numbers overflow quickly as well).  Any help?</p>