diff options
author | Todd C. Miller <millert@cvs.openbsd.org> | 2012-09-13 11:14:21 +0000 |
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committer | Todd C. Miller <millert@cvs.openbsd.org> | 2012-09-13 11:14:21 +0000 |
commit | 60e1bbea275e9b34d6dcf930ce2c5b69422ec2ea (patch) | |
tree | 5a9c6853d44c7058ccd35030e6ffa45e594002b6 /lib/libc/time/Theory | |
parent | 364924d9ae381492f1769df7c8ad65c6a6fdf24b (diff) |
Update to tzcode2012f. Now that tzcode is in git there are no moe
SCCS ids. No actual code changes.
Diffstat (limited to 'lib/libc/time/Theory')
-rw-r--r-- | lib/libc/time/Theory | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/lib/libc/time/Theory b/lib/libc/time/Theory index b8a14f44730..1c0b0c34ffc 100644 --- a/lib/libc/time/Theory +++ b/lib/libc/time/Theory @@ -1,5 +1,4 @@ -$OpenBSD: Theory,v 1.15 2011/04/25 13:27:27 millert Exp $ -@(#)Theory 8.6 +$OpenBSD: Theory,v 1.16 2012/09/13 11:14:20 millert Exp $ This file is in the public domain, so clarified as of 2009-05-17 by Arthur David Olson. @@ -196,26 +195,26 @@ better. ----- Scope of the tz database ----- -The tz database attempts to record the history and predicted future of -all computer-based clocks that track civil time. To represent this -data, the world is partitioned into regions whose clocks all agree -about time stamps that occur after the somewhat-arbitrary cutoff point -of the POSIX Epoch (1970-01-01 00:00:00 UTC). For each such region, -the database records all known clock transitions, and labels the region +The tz database attempts to record the history and predicted future of +all computer-based clocks that track civil time. To represent this +data, the world is partitioned into regions whose clocks all agree +about time stamps that occur after the somewhat-arbitrary cutoff point +of the POSIX Epoch (1970-01-01 00:00:00 UTC). For each such region, +the database records all known clock transitions, and labels the region with a notable location. -Clock transitions before 1970 are recorded for each such location, -because most POSIX-compatible systems support negative time stamps and +Clock transitions before 1970 are recorded for each such location, +because most POSIX-compatible systems support negative time stamps and could misbehave if data were omitted for pre-1970 transitions. -However, the database is not designed for and does not suffice for -applications requiring accurate handling of all past times everywhere, -as it would take far too much effort and guesswork to record all +However, the database is not designed for and does not suffice for +applications requiring accurate handling of all past times everywhere, +as it would take far too much effort and guesswork to record all details of pre-1970 civil timekeeping. -As noted in the README file, the tz database is not authoritative +As noted in the README file, the tz database is not authoritative (particularly not for pre-1970 time stamps), and it surely has errors. -Corrections are welcome and encouraged. Users requiring authoritative -data should consult national standards bodies and the references cited +Corrections are welcome and encouraged. Users requiring authoritative +data should consult national standards bodies and the references cited in the database's comments. @@ -228,7 +227,7 @@ among the following goals: agreed since 1970. This is essential for the intended use: static clocks keeping local civil time. - * Indicate to humans as to where that region is. This simplifes use. + * Indicate to humans as to where that region is. This simplifies use. * Be robust in the presence of political changes. This reduces the number of updates and backward-compatibility hacks. For example, |