From: Ihor Radchenko <yantar92@posteo.net>
To: Max Nikulin <manikulin@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: Observation of hysteresis in a GNU libc time conversion function
Date: Wed, 18 Jan 2023 09:54:20 +0000 [thread overview]
Message-ID: <871qns88xf.fsf@localhost> (raw)
In-Reply-To: <tq6lg6$9m2$1@ciao.gmane.io>
Max Nikulin <manikulin@gmail.com> writes:
> (dt '(-90 -60 -31 -30 -29 -15 0 15 29 30 31 60 90))
This is problematic. You are putting MINUTES out of normal range.
Looking at
https://codecogs.com/library/computing/c/time.h/ctime.php?alias=mktime,
out-of-range minutes are not documented.
Also, see
https://stackoverflow.com/questions/20104531/weird-mktime-logic-with-negative-seconds
Using out-of-range time fields is not advised.
--
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>
next prev parent reply other threads:[~2023-01-18 9:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-17 17:22 Observation of hysteresis in a GNU libc time conversion function Max Nikulin
2023-01-18 9:54 ` Ihor Radchenko [this message]
2023-01-18 16:32 ` Max Nikulin
2023-01-18 16:38 ` Max Nikulin
2023-01-19 10:31 ` Ihor Radchenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.orgmode.org/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=871qns88xf.fsf@localhost \
--to=yantar92@posteo.net \
--cc=emacs-orgmode@gnu.org \
--cc=manikulin@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).