lib/digest/crc16_qt.rb in digest-crc-0.4.1 vs lib/digest/crc16_qt.rb in digest-crc-0.4.2

@@ -8,31 +8,33 @@
   #
   class CRC16QT < CRC16CCITT
 
     FINAL_XOR = 0xffff
 
-    REVERSE_CRC_RESULT = true
-
-    REVERSE_DATA = true
-
+    #
     # Updates the CRC16 checksum.
     #
     # @param [String] data
     #   The data to update the checksum with.
     #
     def update(data)
       data.each_byte do |b|
-        b = revert_byte(b) if REVERSE_DATA
+        b = revert_byte(b)
         @crc = ((@table[((@crc >> 8) ^ b) & 0xff] ^ (@crc << 8)) & 0xffff)
       end
 
       return self
     end
 
+    #
+    # Calculates the CRC checksum value.
+    #
+    # @return [Integer]
+    #
     def checksum
-      crc = @crc + 0
-      crc ^= FINAL_XOR      if FINAL_XOR
-      crc = revert_bits crc if REVERSE_CRC_RESULT
+      crc = super
+      crc ^= FINAL_XOR
+      crc = revert_bits(crc)
       return crc
     end
 
     protected