CRC-32: Difference between revisions

Content deleted Content added

Inline

@@ Line 74: / Line 74: @@
 =={{header|Icon}} and {{header|Unicon}}==
+There is no library function for this so we implement one.  Icon/Unicon binary operations apply to large integers so we need to mask to the desired unsigned word size. This also only applies to full bytes.
 <lang Icon>link hexcvt,printf
@@ Line 102: / Line 103: @@
    }
-   crc := ixor(0,mask)                          # quick implementation
+   crc := ixor(0,mask)                          # invert bits
-   every crc := iand(ixor(crcL[iand(255,ixor(crc,ord(!s)))+1],ishift(crc,-8)),mask)
+   every crc := iand(mask,
+                     ixor(crcL[iand(255,ixor(crc,ord(!s)))+1],ishift(crc,-8)))
-   return hexstring(ixor(crc,mask))
+   return hexstring(ixor(crc,mask))             # return hexstring
 end</lang>