#30614 [NEW]: Adding floating numbers fails

From: mauricio at elmaster dot com Operating system: Linux PHP version: 5.0.1 PHP Bug Type: Reproducible crash Bug description: Adding floating numbers fails Description: ------------ This simple operation fails. We have tried it on PHP 4.3.4 standard install on fedora Core 2, and PHP 5.0.1. Instead of 0 we get 1-8.8817841970013E-16. If we change a bit the number the code doesn't fails, very weird. Reproduce code: --------------- <?php die(9.95 + 4.97 - 9.95 - 4.97); ?> Expected result: ---------------- 0 Actual result: -------------- 1-8.8817841970013E-16 -- Edit bug report at http://bugs.php.net/?id=30614&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=30614&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=30614&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=30614&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=30614&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=30614&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=30614&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=30614&r=needscript Try newer version: http://bugs.php.net/fix.php?id=30614&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=30614&r=support Expected behavior: http://bugs.php.net/fix.php?id=30614&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=30614&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=30614&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=30614&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=30614&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=30614&r=dst IIS Stability: http://bugs.php.net/fix.php?id=30614&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=30614&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=30614&r=float MySQL Configuration Error: http://bugs.php.net/fix.php?id=30614&r=mysqlcfg