Re: [DQSD-Users] Odd Math Error
Kim, Uhhh that doesnt sound right to me. I subtracted 3 different values from another value and got the same result twice. Also two of the results are flat out wrong. I could understand if I had used some kind of hokey notation but its a straight up math problem X-Y. When performed in a calculator application I dont get that result? On 5/17/07, Kim Gräsman [EMAIL PROTECTED] wrote: Hi Richard, [EMAIL PROTECTED] wrote: Had something really screwy happen today, had to do some math so I dropped into my DQSD bar and typed; 2156737.51 - 16123.81 and it gives me the result; 2140613.67 WOW! That's how floating-point arithmetic works on most PCs. I can never describe it without at least confusing accuracy and precision, so I suggest you Google for details :-) http://www.google.com/search?q=floating-point+arithmetic I really have a hard time understanding the details myself, but I know it's how it's supposed to be, even if it's disconcerting. Cheers, - Kim - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ To unsubscribe visit: https://lists.sourceforge.net/lists/listinfo/dqsd-users DQSD-Users@lists.sourceforge.net http://sourceforge.net/mailarchive/forum.php?forum_id=8601 -- Richard Ahlquist Systems Analyst Webmaster http://www.patentlystupid.com http://www.pcsites.com http://www.unlimitedbs.com - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ To unsubscribe visit: https://lists.sourceforge.net/lists/listinfo/dqsd-users DQSD-Users@lists.sourceforge.net http://sourceforge.net/mailarchive/forum.php?forum_id=8601
[DQSD-Users] cut paste firefox error
Another thing I notice with the new version is, as reported by Brain Dunsworth in March, I can no longer paste (ctrl+V or the old trusty ctrl+ins) into the taskbar. Already in the last day I've done it many times to be frustrated and realise how much I do this. Is there a way to get this working? It would be a shame if that functionality was gone now. Interesting to read that Richard Ahlquist is also getting the ff blowup. Note I got it after 2 clean installs on 2 different machines. anyone using this version successfully with the latest Firefox? Thanks, Tom. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ To unsubscribe visit: https://lists.sourceforge.net/lists/listinfo/dqsd-users DQSD-Users@lists.sourceforge.net http://sourceforge.net/mailarchive/forum.php?forum_id=8601
Re: [DQSD-Users] cut paste firefox error
Hi Tom, On Thu, 17 May 2007 23:08:08 +0100, you [Tom Corcoran] wrote: }Note I got it after 2 clean installs on 2 different machines. anyone }using this version successfully with the latest Firefox? Sorry to have to tell you that I am having no problems with either Firefox (ver 2.0.0.3) nor with ctl-v pasting into the taskbar with DQSD (ver 4.0.0.3). -- Bill - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ To unsubscribe visit: https://lists.sourceforge.net/lists/listinfo/dqsd-users DQSD-Users@lists.sourceforge.net http://sourceforge.net/mailarchive/forum.php?forum_id=8601
Re: [DQSD-Users] Odd Math Error
Hi Richard, Uhhh that doesnt sound right to me. I subtracted 3 different values from another value and got the same result twice. Oops, I didn't see your results were identical for the first two cases. I tried it here; 2156737.51 - 16123.81 = 2140613.67 2156737.51 - 16123.83 = 2140613.679997 -- Note: .6_7_999... 2156737.51 - 16123.82 = 2140613.69 Could you try it again to make sure you transcribed the values correctly? Also two of the results are flat out wrong. Right, but they're pretty close to correct, which is what you get with floating-point, if I understand things correctly. I could understand if I had used some kind of hokey notation but its a straight up math problem X-Y. When performed in a calculator application I dont get that result? The calculator (at least the one in Windows) probably doesn't use floating-point to store its numbers, but again, I'm a bit out of my depth here. Cheers, - Kim - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ To unsubscribe visit: https://lists.sourceforge.net/lists/listinfo/dqsd-users DQSD-Users@lists.sourceforge.net http://sourceforge.net/mailarchive/forum.php?forum_id=8601
Re: [DQSD-Users] cut paste firefox error
Tom, Bill, [EMAIL PROTECTED] wrote: On Thu, 17 May 2007 23:08:08 +0100, you [Tom Corcoran] wrote: }Note I got it after 2 clean installs on 2 different machines. anyone }using this version successfully with the latest Firefox? Sorry to have to tell you that I am having no problems with either Firefox (ver 2.0.0.3) nor with ctl-v pasting into the taskbar with DQSD (ver 4.0.0.3). Yep, works fine here as well on the same setup. There were problems with the keyboard accelerators if the pre-4.0 DLL had not been successfully unregistered -- could that be the case for you? - Kim - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ To unsubscribe visit: https://lists.sourceforge.net/lists/listinfo/dqsd-users DQSD-Users@lists.sourceforge.net http://sourceforge.net/mailarchive/forum.php?forum_id=8601
Re: [DQSD-Users] Odd Math Error
It's all about binary arithmetic. Spreadsheets have traditionally had this same issue. There are workarounds for it, but there's a substantial performance penalty and in most cases it's simply not enough to worry about. The number is always only off by one bit at the limit of your precision. -Original Message- From: [EMAIL PROTECTED] [mailto:dqsd-users- [EMAIL PROTECTED] On Behalf Of Kim Gräsman Sent: May-17-07 10:09 PM To: DQSD users mailing list Subject: Re: [DQSD-Users] Odd Math Error Hi Richard, Uhhh that doesnt sound right to me. I subtracted 3 different values from another value and got the same result twice. Oops, I didn't see your results were identical for the first two cases. I tried it here; 2156737.51 - 16123.81 = 2140613.67 2156737.51 - 16123.83 = 2140613.679997 -- Note: .6_7_999... 2156737.51 - 16123.82 = 2140613.69 Could you try it again to make sure you transcribed the values correctly? Also two of the results are flat out wrong. Right, but they're pretty close to correct, which is what you get with floating-point, if I understand things correctly. I could understand if I had used some kind of hokey notation but its a straight up math problem X-Y. When performed in a calculator application I dont get that result? The calculator (at least the one in Windows) probably doesn't use floating-point to store its numbers, but again, I'm a bit out of my depth here. Cheers, - Kim - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ To unsubscribe visit: https://lists.sourceforge.net/lists/listinfo/dqsd-users DQSD-Users@lists.sourceforge.net http://sourceforge.net/mailarchive/forum.php?forum_id=8601 - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ To unsubscribe visit: https://lists.sourceforge.net/lists/listinfo/dqsd-users DQSD-Users@lists.sourceforge.net http://sourceforge.net/mailarchive/forum.php?forum_id=8601
