Re: Floating point performance

[Greg Weeks <greg.weeks@timesys.com>]

Ulrich Eckhardt wrote:

> (Sorry if this mail is garbled, I'm forced to use a sub-par client)
>
> Matej Kupljen wrote:
>  
>
> > I've built soft float toolchain (with crosstool) and then build
> > MPlayer with it. The performance is very low. I cannot even play the
> > mp3 file with MPlayer on DBAU1200 with 400MHz CPU!
> >    
> [...]
>  
>
> > Any other suggestions?
> >    
> I'm not sure what you are doing, but if you only want to play music, I'd use 
> Ogg Vorbis instead, which has a decoder that only uses integer arithmetic for 
> exactly the case of FPU-less machines and the Au1200. I could also imagine an 
> MP3 decoder written for integer only being written somewhere, but I don't know 
> anything about it.
>  
mpg123 had a version of the libs for OS-9 that used integer ops only. It 
was in contributions and not the mainline and I don't know how difficult 
it would be to get it running on Linux. It's a dead project now anyway.
Greg Weeks