Bug #52892 [NEW]: Casting/rounding problem

From: Operating system: Debian GNU/Linux 5.0.5 (lenny) PHP version: Irrelevant Package: *Math Functions Bug Type: Bug Bug description:Casting/rounding problem Description: ------------ After adding 10 times 0.1 and casting it into int or flooring it return value is 0 instead of 1. Test script: --------------- $a = 0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1; print $a; // 1 print round($a); // 1 print (int)$a; // 0 instead of 1 print floor($a); // 0 instead of 1 var_dump($a); // float(1) -- Edit bug report at http://bugs.php.net/bug.php?id=52892&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=52892&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=52892&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=52892&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=52892&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52892&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=52892&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=52892&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=52892&r=needscript Try newer version: http://bugs.php.net/fix.php?id=52892&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=52892&r=support Expected behavior: http://bugs.php.net/fix.php?id=52892&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=52892&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=52892&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=52892&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52892&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=52892&r=dst IIS Stability: http://bugs.php.net/fix.php?id=52892&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=52892&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=52892&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=52892&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=52892&r=mysqlcfg