CRC32 - Cycle Redundancy Check 32-bit:

mostly the best way of getting a "fingerprint" of something
to check for valid data. But this program (routines) are not
a guideline to this. If you want more information about crc's
then check "file verification using crc" by Mark R. Nelson in
Dr.Dobb's Journal, May 1992, pp64-67, or "understanding CRCs"
by Tim Kientzle in Dr. Dobb's Journal, April 1997, pp103-107.
Both articles are best for understanding crc's :)

I programmed this routines to have good and fast routines in
back for my projects. So you will find a generator for crc32
to a memoryblock and to a filestream.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 4000    6064  66.0% -lh5- 554a Aug  6  1999 crc32
[generic]                  704    1376  51.2% -lh5- 8f5f Aug  6  1999 crc32.c
[generic]                  930    2145  43.4% -lh5- f68d Aug  6  1999 crc32fj.c
[generic]                  408     766  53.3% -lh5- 04d6 Aug  6  1999 crc32fj.h
[generic]                  453     773  58.6% -lh5- ef10 Aug  6  1999 crc32fj.readme
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         5 files    6495   11124  58.4%            May  2  2000