Bug #66132 [NEW]: X*5/X where X is floating point number is greater than 5

From: utilmind at gmail dot com Operating system: Any, tested in Win32 and CentOS PHP version: 5.4.22 Package: PHP-GTK related Bug Type: Bug Bug description:X*5/X where X is floating point number is greater than 5 Description: ------------ It's probably bug with conversion from floating point number, or bug with comparision between types. We know that X*5/5 is 5. Even PHP returns 5, however, sometimes, returned value appears to be greater than 5. Test script: --------------- $n = (3.89880952381*5/3.89880952381); // result will be exactly 5 print $n.'!=5 ? '.($n>5); // here it appears that 5 is greater than 5 -- Edit bug report at https://bugs.php.net/bug.php?id=66132&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=66132&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=66132&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=66132&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=66132&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=66132&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=66132&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=66132&r=needscript Try newer version: https://bugs.php.net/fix.php?id=66132&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=66132&r=support Expected behavior: https://bugs.php.net/fix.php?id=66132&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=66132&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=66132&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=66132&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=66132&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=66132&r=dst IIS Stability: https://bugs.php.net/fix.php?id=66132&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=66132&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=66132&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=66132&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=66132&r=mysqlcfg