Re: How to use floating point in a module?

[Horst von Brand]

Manfred Spraul <manfred@xxxxxxxxxxxxxxxx> said:
> Horst von Brand wrote:
> >Trascendental functions are _not_ computed by series in practice, rational
> >approximations (polinomial / polinomial) are used instead. Or interpolate
> >in a smallish table.

> Is that really faster on modern cpus? The multiplier is fully pipelined 
> and a division takes 25-40 cycles.

You need smallish polinomials for double precision, via series it would
take you a lot more terms (and then you get trouble from rounding etc).

No, numerical computation is not my main interest. I might be wrong here.
-- 
Dr. Horst H. von Brand                   User #22616 counter.li.org
Departamento de Informatica                     Fono: +56 32 654431
Universidad Tecnica Federico Santa Maria              +56 32 654239
Casilla 110-V, Valparaiso, Chile                Fax:  +56 32 797513
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