[vorbis-dev] Optimization and doubles vs. floats

[Taral]

On 29 Aug, Timothy J. Wood wrote:
> 
> 
>   I saw some mail go by a bit ago about doubles-vs-floats, but I seem
>   to have lost it.
> 
>   I'm interested in rewriting the mdct code using Altivec on MacOS X. 
>   Altivec doesn't support doubles, though -- the only floating point
>   vector type is single precision floats.  Vorbis currently has
>   doubles everywhere -- is this really necessary?   Doubles are
>   supposedly faster than floats in the PPC FPU, but the Altivec unit
>   is definitely going to be faster.
> 
> -tim
> 
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#define double float

hould be all you need.

Taral

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