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crc_ccitt(9) [centos man page]

CRC_CCITT(9)						  Basic Kernel Library Functions					      CRC_CCITT(9)

crc_ccitt - recompute the CRC for the data buffer SYNOPSIS
u16 crc_ccitt(u16 crc, u8 const * buffer, size_t len); ARGUMENTS
crc previous CRC value buffer data pointer len number of bytes in the buffer COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 CRC_CCITT(9)

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Digest::CRC(3)						User Contributed Perl Documentation					    Digest::CRC(3)

Digest::CRC - Generic CRC functions SYNOPSIS
# Functional style use Digest::CRC qw(crc64 crc32 crc16 crcccitt crc crc8 crcopenpgparmor); $crc = crc64("123456789"); $crc = crc32("123456789"); $crc = crc16("123456789"); $crc = crcccitt("123456789"); $crc = crc8("123456789"); $crc = crcopenpgparmor("123456789"); $crc = crc($input,$width,$init,$xorout,$refout,$poly,$refin,$cont); # add data to existing $crc = crc32("ABCD", $crc); # OO style use Digest::CRC; $ctx = Digest::CRC->new(type=>"crc16"); $ctx = Digest::CRC->new(width=>16, init=>0x2345, xorout=>0x0000, refout=>1, poly=>0x8005, refin=>1, cont=>1); $ctx->add($data); $ctx->addfile(*FILE); $digest = $ctx->digest; $digest = $ctx->hexdigest; $digest = $ctx->b64digest; DESCRIPTION
The Digest::CRC module calculates CRC sums of all sorts. It contains wrapper functions with the correct parameters for CRC-CCITT, CRC-16, CRC-32 and CRC-64, as well as the CRC used in OpenPGP's ASCII-armored checksum. SEE ALSO AUTHOR
Oliver Maul, COPYRIGHT
CRC algorithm code taken from "A PAINLESS GUIDE TO CRC ERROR DETECTION ALGORITHMS". The author of this package disclaims all copyrights and releases it into the public domain. perl v5.16.2 2013-08-25 Digest::CRC(3)
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