The versions and pins that decide zutempo's behaviour: the package and
zufast versions, whether the 128-bit arithmetic uses the compiler's
__int128, and the commits of the Temporal specification and of test262
the package follows, with the tzdata release its fixtures come from. The
pins live in inst/spec/PINS and move only on purpose.
Value
A list of class zutempo_info with elements package, zufast,
int128, spec_repository, spec_commit, spec_date,
test262_repository, test262_commit, test262_date, tzdata,
tzdir, tz_version, tz_form and tz_links_version.
Details
The time zone fields describe the database zutempo reads:
tzdir, the directory found by base R's lookup order (NA when none
exists), tz_version, the tzdata release it declares, tz_form,
whether its files carry explicit transitions far into the future
("fat") or stop at the last rule change ("slim"), and
tz_links_version, the tzdata release the built-in link table comes
from.