Markus Kuhn writes:
xtime_get can fail In libtai, tai_now() and taia_now() always succeed. I think this claim is a bit unrealistic.
RTFM. These functions return their best guess as to the current time. Accuracy is a quality-of-implementation issue.
The only common hardware platform where a correct and robust implementation of your libtai is possible would be a GPS receiver that has been running for at least 12 minutes with an antenna outside a building.
Where do you get these absurd ideas? libtai works with whatever clock is available. There's nothing special about GPS.
If it is not TAI, then please do not call it TAI,
It is TAI. See http://pobox.com/~djb/proto/tai64.txt. ---Dan 1000 recipients, 28.8 modem, 10 seconds. http://pobox.com/~djb/qmail/mini.html