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
m...@pooteeweet.org




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