#32320 [Opn->Fbk]: Problem with negative exponent handling

ID: 32320 Updated by: sniper@php.net Reported By: blucasco at gmail dot com -Status: Open +Status: Feedback Bug Type: Output Control Operating System: FC3 PHP Version: 5.0.3 New Comment: Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip I have FC3, so.. Previous Comments: ------------------------------------------------------------------------ [2005-03-16 16:56:01] blucasco at gmail dot com I think that's a good thing (tm) if it outputs correctly for you -- perhaps it was some element of the build on FC3. But I must caution (before my bug gets immediately discounted), the incorrect results in 5.0.3 listed here were the exact same on two different machines with different processors (AMD vs Intel) with a source build of PHP 5.0.3, running FC3. Glibtools, gcc, c++, binutils were all slightly different versions on both machines to minimize the chance that it was a anamoly with one of those builds. I rebuilt a machine with SuSE and will post results of same test here. But, it would be beneficial if someone with FC3 can address whether this actually happens on their machine. ------------------------------------------------------------------------ [2005-03-16 07:48:10] sniper@php.net Can you explain why I get exactly same results with both PHP 4 and 5 ? ------------------------------------------------------------------------ [2005-03-15 19:08:37] blucasco at gmail dot com Description: ------------ PHP 5.03 appears to handle math equations with negative exponents differently than PHP 4.3.x. I am trying to use the following example in a larger script, but the primary difference is included below. Reproduce code: --------------- PHP 4.3: <? echo (-4738698913^43814); ?> outputs: -443704711 PHP 5.03: <? echo (-4738698913^43814); ?> outputs: -2147439834 Expected result: ---------------- I believe 5.03 should output what 4.3 does, but this is an extraordinarily large number so I can't say for certain. PHP 4.3: <? echo (-4738698913^43814); ?> outputs: -443704711 Actual result: -------------- PHP 5.03: <? echo (-4738698913^43814); ?> outputs: -2147439834 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=32320&edit=1