#25650 [NEW]: Bad number return by % operator

From: jserrano at cutb dot edu dot co Operating system: Mandrake 9.1 PHP version: 4.3.1 PHP Bug Type: Math related Bug description: Bad number return by % operator Description: ------------ the Operator % (modular division) return a erroneous result. Reproduce code: --------------- $a = 63522; $b = 62186; echo "a = 63522\n"; echo "b = 62186\n"; echo $num."\n"; $mod = ($a*$b) % 65536; echo "mod = $mod"; Expected result: ---------------- $a = 63522; $b = 62186; $num = $a*$b; echo $num."\n"; $p = $num/65536; echo (int)$p."\n"; $num = $num-((int)$p*65536); echo "re-mod = $num"; -- Edit bug report at http://bugs.php.net/?id=25650&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=25650&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=25650&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=25650&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=25650&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=25650&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=25650&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=25650&r=support Expected behavior: http://bugs.php.net/fix.php?id=25650&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=25650&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=25650&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=25650&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=25650&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=25650&r=dst IIS Stability: http://bugs.php.net/fix.php?id=25650&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=25650&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=25650&r=float