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

ID: 32320 User updated by: blucasco at gmail dot com Reported By: blucasco at gmail dot com -Status: Feedback +Status: Open Bug Type: Output Control Operating System: FC3 PHP Version: 5.0.3 New Comment: 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. Previous Comments: ------------------------------------------------------------------------ [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