[ANN] CRC-32 LiveCode stack

Alejandro Tejada capellan2000 at gmail.com
Fri Dec 30 10:54:22 CST 2011


Hi All,

Download the stack: CRC-32.rev
http://andregarzia.on-rev.com/alejandro/stacks/CRC-32_LiveCode_Script.zip
http://at.livecodejournal.com/stacks/CRC-32_LiveCode_Script.zip

or type in your message box:
go stack "http://andregarzia.on-rev.com/alejandro/stacks/CRC-32.rev"
go stack "http://at.livecodejournal.com/stacks/CRC-32.rev"

Please report any incompatibilities and/or errors.

Notice that there are many ways to calculate crc-32:
http://zorc.breitbandkatze.de/crc.html
but I choose to calculate a crc-32 compatible
with the internal crc-32 generated for LiveCode's own
compress function using this javascript code as example:
http://www.digsys.se/JavaScript/CRC.aspx

Many Thanks to Andre and Richard for both storage
spaces in their servers! :-)

Have a nice weekend and a Happy New Year!

Al

This CRC-32 livecode script is based on
CRC-32 javascript from webpage:
http://www.digsys.se/JavaScript/CRC.aspx

XHTML / JavaScript source code   September 19, 2010
Copyright (c) 2003-2011 Scandinavian Digital Systems AB
Internet: http://www.digsys.se
Freeware: The source code and its methods and algorithms may be
used as desired without restrictions.
  
All bitWise Functions and fixes written by Shao Sean: 
http://www.shaosean.tk/
published in the LiveCode mail list:
http://lists.runrev.com/pipermail/use-livecode//2005-November/071181.html
http://lists.runrev.com/pipermail/use-livecode//2005-November/071188.html
http://lists.runrev.com/pipermail/use-livecode//2005-December/071668.html
http://lists.runrev.com/pipermail/use-livecode//2005-December/071764.html

CRC-32 (as it is in ZMODEM) in table form
Copyright (C) 1986 Gary S. Brown. You may use this program, or
code or tables extracted from it, as desired without restriction.

Modified by Anders Danielsson, February 5, 1989 and March 10, 2006.

This is also known as FCS-32 (as it is in PPP), described in
RFC-1662 by William Allen Simpson, see RFC-1662 for references.

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