From: uwe dot voelker at vline dot de
Operating system: Win XP
PHP version: 5.0.5
PHP Bug Type: Math related
Bug description: Addition of some negative floats fails
Description:
------------
Addition of some negative floats fails !
Reproduce code:
---------------
<?php
// PHP 5.05
// First example shows the bug
if ( (-56.33) != ((-14.13) + (-42.20)) ) {
print "<HR> First Example: Why is -56.33 not -56.33 ??? <HR>";
}
else
{
print "<HR> First Example: OK <HR>";
}
// Second example with modified values but same result is ok
if ( (-56.33) != ((-14.12) + (-42.21)) ) {
print "<HR> Second Example: Why is -56.33 not -56.33 ??? <HR>";
}
else
{
print "<HR> Second Example: OK <HR>";
}
?>
Expected result:
----------------
First example: true, but must be false.
Second example: false, it is OK.
--
Edit bug report at http://bugs.php.net/?id=35275&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=35275&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=35275&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=35275&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=35275&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=35275&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=35275&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=35275&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=35275&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=35275&r=support
Expected behavior: http://bugs.php.net/fix.php?id=35275&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=35275&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=35275&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=35275&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35275&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=35275&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=35275&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=35275&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=35275&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=35275&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=35275&r=mysqlcfg
