# File lib/cfpropertylist/rbBinaryCFPropertyList.rb, line 387
    def Binary.bytes_needed(count)
      case
      when count < 2**8  then 1
      when count < 2**16 then 2
      when count < 2**32 then 4
      when count < 2**64 then 8
      else
        raise CFFormatError.new("Data size too large: #{count}")
      end
    end