Re: round() returning NaN
Re: round() returning NaN
- Subject: Re: round() returning NaN
- From: Jean-Daniel Dupas <email@hidden>
- Date: Sun, 03 Apr 2011 14:12:12 +0200
Le 3 avr. 2011 à 11:26, Christian Demmer a écrit :
> Eyal Redler wrote:
>> I would appreciate any ideas or directions that you or others might have, this is really worrying and I'm out of ideas...
>
> Reminds me a bit of the discussion starting here:
>
> <http://lists.apple.com/archives/xcode-users/2009/Oct/msg00660.html>
>
In short, the problem was that after (explicitly) using mmx instructions, you must call emms instruction to cleanup the floating point registers, else any use of a floating point instructions may behave unexpectedly.
Are you using mmx or calling code that may use it and does not call emms to cleanup the registers ?
-- Jean-Daniel
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