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

6       String::CRC32 - Perl interface for cyclic redundancy 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);
16           printf "%08x\n", $crc;
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18           open my $fh, '<', 'location/of/some.file' or die $!;
19           binmode $fh;
20           $crc = crc32($fh);
21           close $fh;
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DESCRIPTION

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

32           $crc = crc32("some string");
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34       results in the same as
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36           $crc = crc32(" string", crc32("some"));
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38       This is useful for subsequent CRC checking of substrings.
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40       You may even check files:
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42           open my $fh, '<', 'location/of/some.file' or die $!;
43           binmode $fh;
44           $crc = crc32($fh);
45           close $fh;
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47       A init value may also have been supplied in the above example.
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AUTHOR

50       Soenke J. Peters <peters__perl@opcenter.de>
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52       Current maintainer: LEEJO
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54       Address bug reports and comments to:
55       <https://github.com/leejo/string-crc32/issues>
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LICENSE

58       CRC algorithm code taken from CRC-32 by Craig Bruce.  The module stuff
59       is inspired by a similar perl module called String::CRC by David
60       Sharnoff & Matthew Dillon.  Horst Fickenscher told me that it could be
61       useful to supply an init value to the crc checking function and so I
62       included this possibility.
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64       The author of this package disclaims all copyrights and releases it
65       into the public domain.
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69perl v5.30.1                      2020-01-30                          CRC32(3)
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