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. Regards, Carsten -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
