Bug #51941 [NEW]: sin() and cos() functions return wrong values

From: Operating system: Windows XP/Windows 7 PHP version: 5.3.2 Package: Math related Bug Type: Bug Bug description:sin() and cos() functions return wrong values Description: ------------ For very large values of $x (9.2233720368548E+18 and more), sin($x) and cos($x) simply return $x Test script: --------------- $x = 9.2233720368547E+18; var_dump(sin($x)); var_dump(cos($x)); $x = 9.2233720368548E+18; var_dump(sin($x)); var_dump(cos($x)); $x = 9.2233720368547E+22; var_dump(sin($x)); var_dump(cos($x)); $x = 9.2233720368547E+5; var_dump(sin($x)); var_dump(cos($x)); Expected result: ---------------- float(0.70730241295515) float(0.70691109527848) float(9.2233720368548E+18) float(9.2233720368548E+18) float(9.2233720368547E+22) float(9.2233720368547E+22) float(-0.15745275115961) float(-0.98752652174626) -- Edit bug report at http://bugs.php.net/bug.php?id=51941&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=51941&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=51941&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=51941&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=51941&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51941&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=51941&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=51941&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=51941&r=needscript Try newer version: http://bugs.php.net/fix.php?id=51941&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=51941&r=support Expected behavior: http://bugs.php.net/fix.php?id=51941&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=51941&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=51941&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=51941&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=51941&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=51941&r=dst IIS Stability: http://bugs.php.net/fix.php?id=51941&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=51941&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=51941&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=51941&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=51941&r=mysqlcfg