Re: Fixing POSIX time

2006-01-20 Thread Clive D.W. Feather
Neal McBurnett said: UT1:Flamsteads birthday ? Cute. 1646-08-19 O.S. or N.S.? At least it wasn't January, which would have added a third option. -- Clive D.W. Feather | Work: [EMAIL PROTECTED] | Tel:+44 20 8495 6138 Internet Expert | Home: [EMAIL PROTECTED]

Fixing POSIX time

2006-01-19 Thread Neal McBurnett
On Thu, Jan 19, 2006 at 12:59:42PM +0100, Poul-Henning Kamp wrote: I would far rather we tried to define a time API for POSIX to adopt that makes sense. By make sense I mean: o conforms to relevant international standards ie: recognizes the defininition of leap seconds

Re: Fixing POSIX time

2006-01-19 Thread M. Warner Losh
I like this idea as well... Poul, maybe we should implement this on FreeBSD. I'd suggest working_time_t or correct_time_t as the name of the type to replace time_t which would be deprecated. :-) Warner

Re: Fixing POSIX time

2006-01-19 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Neal McBurnett writes: On Thu, Jan 19, 2006 at 12:59:42PM +0100, Poul-Henning Kamp wrote: Assign different timescales very different numeric epochs: TAI:1972-01-01 00:00:00 UTC For TAI I'd suggest 1958-01-01, when TAI and UT

Re: Fixing POSIX time

2006-01-19 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], M. Warner Losh writes: I like this idea as well... Poul, maybe we should implement this on FreeBSD. I'd suggest working_time_t or correct_time_t as the name of the type to replace time_t which would be deprecated. :-) plenty_time_t :-) -- Poul-Henning Kamp |

McCarthy point (was: Fixing POSIX time)

2006-01-19 Thread Markus Kuhn
M. Warner Losh wrote on 2006-01-19 19:35 UTC: : Therefore, if people ask me for my favourite epoch for a new time scale, : then it is : : 2000-03-01 00:00:00 (preferably UTC, but I would not mind much :if it were TAI, or even GPS time) : : This epoch has the

Re: Fixing POSIX time

2006-01-19 Thread Steve Allen
On Thu 2006-01-19T19:00:27 +, Markus Kuhn hath writ: Please remember that the TAI second differed noticeably from the SI second until about 1998, because black-body radiation shift was not taken into account in the definition of TAI before then. Also caesium fountains have improved quite a

Re: McCarthy point (was: Fixing POSIX time)

2006-01-19 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Markus Kuhn writes: All I wanted to say is that for a good choice of epoch, it would be nice if we agreed on it not only to within a few seconds (the leap-second problem), but also to within a few milli- or microseconds (the SI/TAI second problem). The latter seems