From: Operating system: Ubuntu 10.04 LTS PHP version: 5.3.2 Package: *Math Functions Bug Type: Bug Bug description:Inaccurate Pi calculation
Description: ------------ PHP seems to calculate pi incorrectly after 15 decimal places when calling the pi() function. I have used http://en.wikipedia.org/wiki/Pi as a reference for the correct value of pi. Test script: --------------- <?php ini_set("precision", 24); echo pi(); ?> Expected result: ---------------- 3.14159265358979323846264 Actual result: -------------- 3.14159265358979311599796 -- Edit bug report at http://bugs.php.net/bug.php?id=52405&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=52405&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=52405&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=52405&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=52405&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52405&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=52405&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=52405&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=52405&r=needscript Try newer version: http://bugs.php.net/fix.php?id=52405&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=52405&r=support Expected behavior: http://bugs.php.net/fix.php?id=52405&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=52405&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=52405&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=52405&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52405&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=52405&r=dst IIS Stability: http://bugs.php.net/fix.php?id=52405&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=52405&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=52405&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=52405&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=52405&r=mysqlcfg
