Floating point/math support implementation

Carsten Haitzler (The Rasterman) raster at rasterman.com
Wed Sep 17 13:50:49 CEST 2008


On Wed, 17 Sep 2008 12:29:27 +0300 Kostis Anagnostopoulos <ankostis at gmail.com>
babbled:

> On Wed 17 Sep 2008 00:57:15 Carsten Haitzler wrote:
> > On Tue, 16 Sep 2008 23:17:52 +0200 "Anton Persson" <don.juanton at gmail.com>
> >
> > babbled:
> > > Hi,
> > >
> > > I have a few questions about the math support. I've noticed that
> > > math functions such as sin() are very slow on the OpenMoko. How
> > > is the math support implemented? Are all floating point operations
> > > implemented in software, or is there hardware support for float
> > > multiplication, and trigonometric functions?
> >
> > no fpu. so no hardware. software only. avoid floating point math where you
> > can.
> 
> Would it be thinkable to use the OpenRISC processors embedded into Glamo chip?

simple version: no. no specs on how to use it or even if it can do any fp. just
avoid fp math. do it some other way. (MUCH easier than trying to use the
glamo).


-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler)    raster at rasterman.com




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