Subject: Re: irq handling patch
To: None <Richard.Earnshaw@arm.com>
From: Chris Gilbert <chris@paradox.demon.co.uk>
List: port-arm32
Date: 04/03/2001 10:38:28
On Tuesday 03 April 2001 10:19 am, Richard Earnshaw wrote:
> > > Is the algorithm that David Seal devised?  If so, I think it would be
> > > right to credit him with it in a comment.
> >
> > Yes i think it might be, but I've no idea how to credit him, if I put
> > copyright as him then I certainly can't submit it.  My other problem was
> > I wasn't too sure it was his, a version of the ffs stuff I've got from
> > way back thinks it's his (or finding the number that can be done in 3 arm
> > instr is probably his, the algorithm is probably fairly generic)  Does
> > anyone have an email or contact details for him?
>
> He works here.  I'll ask him.  I think fair credit in this case would be
> to add a comment before the code in question stating its origin --
> something along the lines of
>
>   /* This algorithm for FFS was devised by D. Seal and posted to
>    * comp.sys.arm on 16 Feb 1994.
>    */

Sounds good.  I'm never too sure on copyright/legal issues, and certainly as 
it is his magic number for ffs he should be credited.

> I've just found the original posting in my copious archives ;-)  I've
> appended the relevant part of it below for the curious.

Better archive than the one on dejanews, it doesn't go that far back for 
comp.sys.arm.

Cheers,
Chris