Re: [rtl] FW: Floating Point in Real-Time Kernel

[Linus Gasser <ineiti@gmx.net>]

Hello,
OK, MMX is a special set of functions used for the pentium-pro and upwards 
(or was it already in pentium?). The most corresponding buzzword is 'single 
instruction, multiple data'. So you may add 4 16-bit integers at the same 
time, or multiply, or do other stuff.
 But, as a good guess, if you have nowhere something like
#include "mmx.h"
in your code, this shouldn't be a problem.
 It was just something I ran into when writing some code that used 
floating-point and MMX...
 For further information, you may look at:
http://web.tiscali.it/tommesani/MMXPrimer.html
 Or a multitude of other web-pages that treat the subject.

Have fun,

ineiti

On Tuesday 02 October 2001 12:00, you wrote:
>  HI
>    clould u pls tell me what is  mmx-functions,
>
> thanks
> chandu
>
> -----Original Message-----
> From: Linus Gasser [mailto:ineiti@gmx.net]
> Sent: Tuesday, October 02, 2001 2:56 PM
> To: rtl@fsmlabs.com
> Subject: Re: [rtl] FW: Floating Point in Real-Time Kernel
>
> On Monday 01 October 2001 17:44, you wrote:
> > Does anyone know any more than I do about floating point?  Any comments
> > would be greatly appreciated.
>
> Hi,
> just .02$: if you use mmx-functions, don't forget to call emms(); at the
> end,
> to re-initialise the floating-point unit!
>
> ineiti
> -- [rtl] ---
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