On Monday 07 February 2005 21:06, Timothy Miller wrote: > On Mon, 7 Feb 2005 17:21:39 +0100, Lourens Veen > > <[EMAIL PROTECTED]> wrote: > > On Monday 07 February 2005 13:35, Lourens Veen wrote: > > > Timothy, is there anything in float25::approx_recp() that seems > > > problematic to you to implement in hardware? Anything that when removed > > > would make the hardware much simpler? > > > > In particular, that multiplication is now 5 bit (difference) multiplied > > by 6 bit (invfrac), is that still feasible as a hardcoded bunch of adders > > or does it require using a built-in multiplier? > > I can always synthesize a pipelined multiplier out of random logic.
I realise that. What I don't know is how expensive things are relative to one another. Is an extra increment somewhere worth an if-then somewhere else? That sort of stuff. There is still some wriggle room in that approximate reciprocal, but I don't know which way to go. any clues would be much appreciated. Lourens _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
