From: goth at spellforce dot ru
Operating system: unix
PHP version: 5.1.2
PHP Bug Type: Math related
Bug description: is_infinite & is_finite
Description:
------------
Hello,
I've incountered a following mistake in your is_infinite function - why
does it return 'false' in the following example?
Here is_infinite returns 'false' and is_finite - convercely, 'true'.
Reproduce code:
---------------
<?PHP
$T1=1;
$T2=0;
if (is_infinite($T1/$T2))
{
$R="value is infinite"; // 1)
}
else
{
$R="value is finite"; // 2)
}
echo $R;
?>
So this script outputs 2) instead of 1), but it's incorrect
Expected result:
----------------
>From the maths. analisys follows, that
constant / zero = infinity
So the answer must be "value is infinite" not ="value is finite"!
--
Edit bug report at http://bugs.php.net/?id=36065&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=36065&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=36065&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=36065&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=36065&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=36065&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=36065&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=36065&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=36065&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=36065&r=support
Expected behavior: http://bugs.php.net/fix.php?id=36065&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=36065&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=36065&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=36065&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36065&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=36065&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=36065&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=36065&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=36065&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=36065&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=36065&r=mysqlcfg
