RE: Generation of permutations (copyright)

From: "Steven Deller" <deller@smsail.com>
Subject: RE: Generation of permutations (copyright)
Date: Mon, 13 May 2002 16:09:02 -0400
Date: 2002-05-13T16:09:02-04:00	[thread overview]
Message-ID: <mailman.1021324262.10270.comp.lang.ada@ada.eu.org> (raw)
In-Reply-To: <200205130825.KAA04747@bulgaria.otn.eurocopter.de>

Christoph,
My apologies to all.  

While I remember writing this for a course on Ada that I prepared ada
gave at UofMD on my own time, I forgot that it was later included into a
Verdix library unit "ordering" (along with a heapsort, quicksort and
insertion sort) and even later included with all Apex releases.  

As such, it now bears a Copyright from Rational, all rights reserved (it
is slightly different than my original).

If you have a Rational license you are able to use the code.  (Last I
knew, any verifiable educational institution can get a Rational Apex
license for free.)

I do not know if Rational would be willing to go to a copyleft or
similar for this code.  Maybe you could ask them.

You could get a copy of Discipline of Programming and just transliterate
the algorithm therein to Ada 95.  It would look a lot like this (which
is a transliteration from Djkstra's "code" into Ada 83).  

Again, my apologies for forgetting that I had given my code to Verdix to
be incorporated in the VADS product back in 1984/5.

Regards,
Steve

> -----Original Message-----
> From: comp.lang.ada-admin@ada.eu.org 
> [mailto:comp.lang.ada-admin@ada.eu.org] On Behalf Of Grein, Christoph
> Sent: Monday, May 13, 2002 4:25 AM
> To: comp.lang.ada@ada.eu.org
> Cc: deller@smsail.com
> Subject: RE: Generation of permutations (copyright)
> 
> Steven,
> 
> being alerted wrt copyright, what's the copyright and 
> licensing of the package 
> PERMUTING you've posted on Fri, 10 May 2002 21:52:29 -0400?
> 
> Christoph
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> comp.lang.ada mailing list
> comp.lang.ada@ada.eu.org 
> http://ada.eu.org/mailman/listinfo/comp.lang.ad> a
> 