Tim Cook nous apporta ses lumieres en ce 2005-10-29 17:37:
> Alain wrote:
> 
>> You need 128 bit FPU! Now, they are 64 bits. In this case, double 
>> precision is just not enough, you need quadruple precision (or more!). 
>> It can be emulated, but it will take a LOT more time to do the maths, 
>> leading to proebitive render time.
> 
> 
> You know, back in the day, you needed a Cray supercomputer just to even 
> think about being able to do what you can do in under a minute on a 
> modern desktop.  I'd like to see an actual time-cost of doing things 
> 'the hard way' with software handling the precision out to whatever's 
> sufficient to remove precision-related artifacts, all I've seen is 
> people insisting that it's too long to be of any use.
> 
About 18 years ago, my brother used autocad on a 286 with and without a mathematical
coprocessor. 
Acording to him, it was MORE than twice as fast with the coprocessor than without. The
machine 
without the coprocessor had a faster CPU and more RAM!

-- 
Alain
-------------------------------------------------
Rastafarianism: Let's smoke this shit!

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