[maemo-developers] Performance of floating point instructions

[From: Alberto Mardegan]

On 10/29/2010 12:14 PM, Eero Tamminen wrote:
> Hi,
>
> (I resurrected this old thread because there was on meego-dev
> mailing list a comment about possibility for RunFast float mode
> being enabled by default on MeeGo...)
>
> ext Alberto Mardegan wrote:
>> Eero Tamminen wrote:
>>> Hamalainen Kimmo (Nokia-D/Helsinki) wrote:
>>>> On Wed, 2010-03-10 at 12:57 +0100, ext Alberto Mardegan wrote:
>>> Not the libosso osso_fpu_set_mode() function?
>>
>> I can't find this in libosso.h. :-(
>
> It's defined in osso-fpu.h (since summer 2009):
> http://maemo.gitorious.org/fremantle-hildon-desktop/libosso/blobs/master/src/osso-fpu.h
>
>
>
> If somebody's using a lot of floats (RunFast mode affects only floats)
> and they're a bottleneck, it would be interesting to know how much this
> (setting the RunFast mode at program start) helps.

The discussion continued in the same thread:
http://lists.maemo.org/pipermail/maemo-developers/2010-March/025203.html
and
http://lists.maemo.org/pipermail/maemo-developers/2010-March/025218.html

Ciao,
   Alberto

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