Commit graph

8 commits

Author SHA1 Message Date
Po Lu
8e1c56ae46 ; Add 2024 to copyright years 2024-01-02 09:47:10 +08:00
Eli Zaretskii
cae528457c ; Add 2023 to copyright years. 2023-01-01 05:31:12 -05:00
Eli Zaretskii
19dcb237b5 ; Add 2022 to copyright years. 2022-01-01 02:45:51 -05:00
Stefan Kangas
8bb28e740d ; Minor stylistic checkdoc fixes in test/**/*.el 2021-09-26 17:53:23 +02:00
Paul Eggert
ba05d005e5 Update copyright year to 2021
Run "TZ=UTC0 admin/update-copyright".
2021-01-01 01:13:56 -08:00
Paul Eggert
365e01cc9f Update copyright year to 2020
Run "TZ=UTC0 admin/update-copyright $(git ls-files)".
2020-01-01 00:59:52 +00:00
Paul Eggert
f9fd12a30b Fix time-add rounding bug
Without this fix, time arithmetic yielded results that were not
mathematically accurate, even though the exact results were
representable; for example, (time-add 0 1e-13) yielded a timestamp
equal to 0 instead of to 1e-13.
* lisp/timezone.el (timezone-time-from-absolute):
Let time-add do its thing rather than using floating point
internally, which has rounding errors.  We now have bignums and so
don’t need floating point to avoid overflow issues.
* src/timefns.c (timeform_sub_ps_p): New function.
(time_arith): If either argument is a float, represent the
result exactly instead of discarding sub-ps info.
* test/lisp/timezone-tests.el (timezone-tests-time-from-absolute):
Don’t assume (HI LO US PS) timestamp format.
* test/src/emacs-module-tests.el (mod-test-add-nanosecond/valid):
Don’t assume that time-add discards sub-ns info.
* test/src/timefns-tests.el (time-rounding-tests):
Add regression test to detect time-add rounding bug.
2019-08-16 16:27:27 -07:00
Stefan Kangas
b6c628a16b Use lexical-binding in timezone.el and add tests
* lisp/timezone.el: Use lexical-binding.
* test/lisp/timezone-tests.el: New file.
2019-06-01 01:44:31 -07:00