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List:       kde-devel
Subject:    Re: kpdf
From:       Oelewapperke <oelewapperke () ulyssis ! org>
Date:       2003-04-15 12:13:00
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On Tuesday 15 April 2003 09:56, Holger Freyther wrote:
> On Monday 14 April 2003 22:30, Oelewapperke wrote:
> > I plan to include the other innovation from qpdf ( using fixed-point math
> > instead of floating-point, which they claim speeds up the rendering
> > process a lot).
>
> but only for devices without a FPU. Let's say most of the ARM(tm)
> processorts and MIPS fall under this category. Most desktop systems do have
> a FPU and the change is not needed there.
>
> regards Holger
>
> > greetings,
> >
> > Christophe
> >
> > >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to
> > >> unsubscribe <<

Every integer math operation only takes the minimum ticks on a pentium 4 
processor (except division). Every floating point operation takes at least a 
bus-cycle (internal bus-cycle which is not the same as the FSB, but still it 
is at least 7 normal cycles).

So it is a LOT faster (at least 7 times, can be more, because there is much 
more bandwidth available for integer math).

Christophe
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