On Tue, May 12, 2009 at 5:27 PM, Visti Andresen <ta...@talpa.dk> wrote: > On Tue, 12 May 2009 13:28:06 +0300 > Aapo Rantalainen <aapo.rantalai...@gmail.com> wrote: > >> Is there trivial (=automatic) way to change floating point arithmetic >> to fixed point arithmetic? > > Not that I'm aware of... > Floating and fixed point numbers have different limitations and > therefor not all software would work with fixed point. > > But it "should be possible" (not trivial) to extend gcc to allow > faking floats using fixed point? > >> >> I have some compilable and runnable code, but it is too slow on >> Freerunner and I think it is because of used floats. It runs on Nokia >> Internet Tablet very well and I think it has almost same specks than >> Freerunner expect it has FPU. >> >> So is there some other way than reading and learning whole source code >> and make changes? (Maybe some compile options to use fixed points >> instead of floats?) >> AFAIR one of developers (GSoC) used double precision fixed point arithmetic for voice recognition code might be public so it will be nice hint for you. Here it is http://lists.openmoko.org/pipermail/openmoko-devel/2008-June/003153.html -- So long, and thanks for all the fish.
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