#36065 [Opn->Bgs]: is_infinite & is_finite
| From: | tony2001@php.net | Date: | Wed, 18 Jan 2006 11:17:05 +0000 |
| Subject: | #36065 [Opn->Bgs]: is_infinite & is_finite | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-92123@lists.php.net to get a copy of this message | ||
ID: 36065
Updated by: tony2001@php.net
Reported By: goth at spellforce dot ru
-Status: Open
+Status: Bogus
Bug Type: Math related
Operating System: unix
PHP Version: 5.1.2
New Comment:
Try to set error_reporting to E_ALL ?
Previous Comments:
------------------------------------------------------------------------
[2006-01-18 12:02:25] goth at spellforce dot ru
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"!
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=36065&edit=1