cksum missing

[walter harms]

you may like to look at this:
http://en.wikipedia.org/wiki/Cyclic_redundancy_check
it says basicly there are 3 sorts of crc32.
You can init with 0 or ~0 and xor the result with 0 or ~0
more over there is a big and little endian version:
(nice reading: linux kernel code
http://os.inf.tu-dresden.de/l4env/doc/html/oshkosh/crc32_8c-source.html)

the question is how to handle all this ? i will take a dive into the 
code and lets see what happens next.

re,
  walter



Rob Sullivan wrote:
>> We already have two checksum calculation things.  One in bunzip and one in
>> gunzip.  (They're two different kinds of CRC32.  The same basic algorithm but
>> the endianness is different and one is initialized to 0 the other to -1.)
> 
> How about integrating a CRC32 function into libbb with both types of
> endianness? This might save a fair bit of duplicated code.
> 
> Rob
> 
> 
>