1CRC32(3)              User Contributed Perl Documentation             CRC32(3)
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NAME

6       String::CRC32 - Perl interface for cyclic redundency check generation
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SYNOPSIS

9           use String::CRC32;
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11           $crc = crc32("some string");
12           $crc = crc32("some string", initvalue);
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14           $somestring = "some string";
15           $crc = crc32($somestring);
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17           open(SOMEFILE, "location/of/some.file");
18           $crc = crc32(*SOMEFILE);
19           close(SOMEFILE);
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DESCRIPTION

22       The CRC32 module calculates CRC sums of 32 bit lenghts.  It generates
23       the same CRC values as ZMODEM, PKZIP, PICCHECK and many others.
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25       Despite its name, this module is able to compute the checksum of files
26       as well as strings.
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EXAMPLES

29           $crc = crc32("some string");
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31         results in the same as
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33           $crc = crc32(" string", crc32("some"));
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35       This is useful for subsequent CRC checking of substrings.
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37       You may even check files:
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39           open(SOMEFILE, "location/of/some.file");
40           $crc = crc32(*SOMEFILE);
41           close(SOMEFILE);
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43       A init value may also been supplied in the above example.
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AUTHOR

46       Soenke J. Peters <peters__perl@opcenter.de>
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48       Please be so kind as to report any bugs/suggestions to the above
49       address.
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52       CRC algorithm code taken from CRC-32 by Craig Bruce.  The module stuff
53       is inspired by a similar perl module called String::CRC by David
54       Sharnoff & Matthew Dillon.  Horst Fickenscher told me that it could be
55       useful to supply an init value to the crc checking function and so I
56       included this possibility.
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58       The author of this package disclaims all copyrights and releases it
59       into the public domain.
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63perl v5.12.0                      2005-04-04                          CRC32(3)
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