Re: New CRC algorithm: Slicing by 8 - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: New CRC algorithm: Slicing by 8
Date
Msg-id 20061020025639.GB26749@alvh.no-ip.org
Whole thread Raw
In response to Re: New CRC algorithm: Slicing by 8  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: New CRC algorithm: Slicing by 8  ("Gurjeet Singh" <singh.gurjeet@gmail.com>)
List pgsql-hackers
Tom Lane wrote:
> "Gurjeet Singh" <singh.gurjeet@gmail.com> writes:
> >> Please refer to the following link for a new algorithm to calculate
> >> CRC, developed by Intel.
> >> 
> >> http://www.intel.com/technology/magazine/communications/slicing-by-8-0306.htm
> 
> I can't help wondering what the patent status of this algorithm is.
> 
> (This from a guy who still remembers very well how Unisys published the
> LZW algorithm in a manner that made it look like it was free for anyone
> to use...)

This article

http://www.intel.com/technology/magazine/communications/slicing-by-8-0306.htm

seems to imply it's provided "free".  It doesn't say anything about
being free of patents though.

The Sourceforge project referred to in the article (but for which no
link is given) seems to be this one:

http://sourceforge.net/projects/slicing-by-8

The "files" section contains a zip archive, inside which there are three
source files all of which state that the package, which is (c) Intel
Corp. 2004-2006, is released under the BSD license, with this URL:

http://www.opensource.org/licenses/bsd-license.html

Again, no mention of patents anywhere.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.


pgsql-hackers by date:

Previous
From: Tom Lane
Date:
Subject: Re: New CRC algorithm: Slicing by 8
Next
From: "Jim C. Nasby"
Date:
Subject: Re: Statements with syntax errors are not logged