Re: [Flightgear-devel] FGNetFDM-time
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Norman Vine schrieb: ..a _guess_: the 32bit unix calendar ticks over sometime in 2038, while the 32bit Wintendo calendar ticks over every 49? days, I saw this given somewhere on the web as the reason Microsoft used (they still do?) to recommend reboots about that often. This is true a naive Win32 clock running of of timeGetTime() rolls over every 49 days but there are ways to prevent this although I don't believe the FlightGear clock on Windows checks for this. That was a problem on Win95 (dunno if it was fixed till WinME). But on the WinNT series (incl. Win2000 and WinXP) it was never an issue. CU, Christian -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.0 (MingW32) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFB4Pv3lhWtxOxWNFcRAv4dAJ9bi/uzFRfOSs8F29pMuGmxbF7w3gCfXzc2 u7Txk+VAF4Mxh6jCRO8Tot8= =cZiW -END PGP SIGNATURE- ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] FGNetFDM-time
On Sat, 08 Jan 2005 14:47:20 +0800, Ivan wrote in message [EMAIL PROTECTED]: G''day all. I''ve written a client that drives FG using the native-fdm I/O mechanism. For the ''time'' variable, I've tried entering zero, and then entering the value returned by (Win32's) GetTickCount() -- no difference. However, interestingly, I noticed that FG starts off at midnight (in its internal world time) but the time advances at a phenomenal rate. After a couple of minutes I actually see the sky lighten up, followed by the sun rising in the east. Sunset follows about 2 min later. What gives ?? ..a _guess_: the 32bit unix calendar ticks over sometime in 2038, while the 32bit Wintendo calendar ticks over every 49? days, I saw this given somewhere on the web as the reason Microsoft used (they still do?) to recommend reboots about that often. -- ..med vennlig hilsen = with Kind Regards from Arnt... ;-) ...with a number of polar bear hunters in his ancestry... Scenarios always come in sets of three: best case, worst case, and just in case. ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
RE: [Flightgear-devel] FGNetFDM-time
Arnt Karlsen writes: On Sat, 08 Jan 2005 14:47:20 +0800, Ivan wrote in message [EMAIL PROTECTED]: G''day all. I''ve written a client that drives FG using the native-fdm I/O mechanism. For the ''time'' variable, I've tried entering zero, and then entering the value returned by (Win32's) GetTickCount() -- no difference. However, interestingly, I noticed that FG starts off at midnight (in its internal world time) but the time advances at a phenomenal rate. After a couple of minutes I actually see the sky lighten up, followed by the sun rising in the east. Sunset follows about 2 min later. What gives ?? ..a _guess_: the 32bit unix calendar ticks over sometime in 2038, while the 32bit Wintendo calendar ticks over every 49? days, I saw this given somewhere on the web as the reason Microsoft used (they still do?) to recommend reboots about that often. This is true a naive Win32 clock running of of timeGetTime() rolls over every 49 days but there are ways to prevent this although I don't believe the FlightGear clock on Windows checks for this. However Ivan's problem is one of order of magnitude SimGear / timing / timestamp.XXX is where this is spelled out in code Cheers Norman ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
[Flightgear-devel] FGNetFDM-time
G''day all. I''ve written a client that drives FG using the native-fdm I/O mechanism. For the ''time'' variable, I've tried entering zero, and then entering the value returned by (Win32's) GetTickCount() -- no difference. However, interestingly, I noticed that FG starts off at midnight (in its internal world time) but the time advances at a phenomenal rate. After a couple of minutes I actually see the sky lighten up, followed by the sun rising in the east. Sunset follows about 2 min later. What gives ?? -ivan ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
