From:
Operating system: linux mandriva 2011
PHP version: Irrelevant
Package: Scripting Engine problem
Bug Type: Bug
Bug description:float gives strange result when division is done prior.
Description:
------------
float gives strange result when division is done prior.
Test script:
---------------
$tempout = 5037;
$tempin = 5000;
$tempdiff = $tempout - $tempin;
$tempout = ($tempout / 100);
$tempin = ($tempin / 100);
$tempdiff = ($tempdiff / 100);
$tempdiffActual = $tempout - $tempin;
var_dump($tempdiffActual);
echo "gives: float(0.37) <br>";
var_dump($tempdiff);
echo "gives: float(0.37) <br>";
$something = $tempdiffActual - $tempdiff;
var_dump($something);
echo "gives: float(-2.5535129566379E-15). Should be 0 <br>";
Expected result:
----------------
var_dump($something);
should be float(0)
Actual result:
--------------
var_dump($something);
result: float(-2.5535129566379E-15)
--
Edit bug report at https://bugs.php.net/bug.php?id=55843&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=55843&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=55843&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=55843&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=55843&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=55843&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=55843&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=55843&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=55843&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=55843&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=55843&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=55843&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=55843&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=55843&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=55843&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=55843&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=55843&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=55843&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=55843&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=55843&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=55843&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=55843&r=mysqlcfg
