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);
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17           open my $fh, '<', 'location/of/some.file' or die $!;
18           binmode $fh;
19           $crc = crc32($fh);
20           close $fh;
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DESCRIPTION

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

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

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

56       CRC algorithm code taken from CRC-32 by Craig Bruce.  The module stuff
57       is inspired by a similar perl module called String::CRC by David
58       Sharnoff & Matthew Dillon.  Horst Fickenscher told me that it could be
59       useful to supply an init value to the crc checking function and so I
60       included this possibility.
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62       The author of this package disclaims all copyrights and releases it
63       into the public domain.
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67perl v5.28.1                      2018-07-02                          CRC32(3)
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