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

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