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To: Carsten Wiedmann <carsten_sttgt@gmx.de>
In-Reply-To: <gvb5eg$97n$1@ger.gmane.org>
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Date: Thu, 18 Jun 2009 16:15:03 +0200
References: <4C598D91E2B74BB28AD012E24E425A78@pc> <gvb5eg$97n$1@ger.gmane.org>
Subject: Re: [PHP-DEV] NaN still broken on Windows builds?
From: mls@pooteeweet.org (Lukas Kahwe Smith)


On 24.05.2009, at 11:53, Carsten Wiedmann wrote:

> Hello,
>
>> var_dump(NAN); // float(0), should be float(NAN)
>> $realNaN = sqrt(-1);
>> var_dump($realNaN); // float(NAN)
>> var_dump($realNaN == $realNaN); // true, should be false, NaN  
>> should never match NaN
>
> That's interesting. With my own 5.2.9 build (vc6), I have "false" in  
> the
> last test (comparing the variable):
> | # php -n -r "var_dump(NAN);$n=sqrt(-1);var_dump($n);var_dump($n== 
> $n);"
> | float(0)
> | float(NAN)
> | bool(false)
>
> With the official 5.2.9 or 5.2.10-dev builds it's "true" on the same  
> machine
> (xp sp3).
>
>
> BTW: is_nan($realNaN) is working with the official build.


is this fixed? and if not .. is there a bug ticket open?

regards,
Lukas Kahwe Smith
mls@pooteeweet.org