bug#26632: TAI<->UTC conversion botches 1961 to 1971

2018-11-05 Thread Zefram
Mark H Weaver wrote: >patch adds the TAI-UTC tables for 1961-1971 and uses them to implement >TAI<->UTC conversions over that time range with nanosecond accuracy. On a quick inspection of the code, that looks good. >I'm vaguely concerned about violating widely-held assumptions, >e.g. that

bug#26632: TAI<->UTC conversion botches 1961 to 1971

2018-10-24 Thread John Cowan
On Wed, Oct 24, 2018 at 1:58 AM Mark H Weaver wrote: > This has to be examined somewhat indirectly, because SRFI-19 doesn't offer > > any way to display a TAI time in its conventional form as a date-like > > structure, nor to input a TAI time from such a structure. > I think that is as it should

bug#26632: TAI<->UTC conversion botches 1961 to 1971

2018-10-23 Thread Mark H Weaver
Hi Zefram, Zefram writes: > The SRFI-19 library gets TAI<->UTC conversions badly wrong in the years > 1961 to 1971 (inclusive). Indeed. > This has to be examined somewhat indirectly, because SRFI-19 doesn't offer > any way to display a TAI time in its conventional form as a date-like > structur

bug#26632: TAI<->UTC conversion botches 1961 to 1971

2017-04-23 Thread Zefram
The SRFI-19 library gets TAI<->UTC conversions badly wrong in the years 1961 to 1971 (inclusive). This has to be examined somewhat indirectly, because SRFI-19 doesn't offer any way to display a TAI time in its conventional form as a date-like structure, nor to input a TAI time from such a structur