#50622 [NEW]: minus 0 returned
| From: | okycastro at gmail dot com | Date: | Thu, 31 Dec 2009 14:30:04 +0000 |
| Subject: | #50622 [NEW]: minus 0 returned | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-146242@lists.php.net to get a copy of this message | ||
From: okycastro at gmail dot com
Operating system: windows vista
PHP version: 5.2.12
PHP Bug Type: *Math Functions
Bug description: minus 0 returned
Description:
------------
-0 is returns under the following example. I believe this is a bug. I see
there was a bug about this a long time ago, But I think that the concept of
a -0 is an invalid one. it just makes no sense. Even more if you consider
that the following line will never gets executed
if ($x < 0) //$x = -0
//NEVER EXECUTED
if ($x <= 0) //$x = -0
//GETS EXECUTED
Reproduce code:
---------------
$i= (float) -90;
$a= (int) 0;
echo floor($i * ($a / 100));
returns -0;//MY OPINION IS AN ERROR
$i= (int) -90;
$a= (int) 0;
echo floor($i * ($a / 100));
returns 0;//OK
Expected result:
----------------
0 should be returned always
Actual result:
--------------
-0
--
Edit bug report at http://bugs.php.net/?id=50622&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50622&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50622&r=trysnapshot53
Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50622&r=trysnapshot60
Fixed in SVN: http://bugs.php.net/fix.php?id=50622&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50622&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=50622&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=50622&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=50622&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=50622&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=50622&r=support
Expected behavior: http://bugs.php.net/fix.php?id=50622&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=50622&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=50622&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=50622&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50622&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=50622&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=50622&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=50622&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=50622&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=50622&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=50622&r=mysqlcfg