From: kelfe at gmx dot de Operating system: Gentoo64 PHP version: 5.2.6 PHP Bug Type: Math related Bug description: round is not working consitently on 64bit
Description: ------------ the demo code procduces the expected results on a gentoo 32 bit install (amd 2400+) dev-lang/php-5.2.6-r1 but fails with the actual results on a 64bit install (intel xeon) from the same ebuild the error can reproduced on an older ubuntu PHP 5.2.3 running 64bit as well the loop and sum was only added to reduce the code (could do 20 round of the calculated values as well for the same result) Reproduce code: --------------- php -r 'for($i=0;$i<20;$i++) echo round($i+0.015,2)."\n";' Expected result: ---------------- 0.02 1.02 2.02 3.02 4.02 5.02 6.02 7.02 8.02 9.02 10.02 11.02 12.02 13.02 14.02 15.02 16.02 17.02 18.02 19.02 Actual result: -------------- 0.02 1.01 2.02 3.02 4.01 5.01 6.02 7.02 8.02 9.02 10.02 11.02 12.02 13.02 14.02 15.02 16.02 17.02 18.02 19.02 -- Edit bug report at http://bugs.php.net/?id=45278&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=45278&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=45278&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=45278&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=45278&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=45278&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=45278&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=45278&r=needscript Try newer version: http://bugs.php.net/fix.php?id=45278&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=45278&r=support Expected behavior: http://bugs.php.net/fix.php?id=45278&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=45278&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=45278&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=45278&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45278&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=45278&r=dst IIS Stability: http://bugs.php.net/fix.php?id=45278&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=45278&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=45278&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=45278&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=45278&r=mysqlcfg
