Path: utzoo!attcan!uunet!samsung!uakari.primate.wisc.edu!uflorida!gatech!mcnc!decwrl!ads.com!jtn
From: jtn@ADS.COM (John T. Nelson)
Newsgroups: comp.unix.questions
Subject: How to generate Unix time from dates?
Message-ID: <9X5%Q7*@ads.com>
Date: 25 Oct 90 20:31:34 GMT
Sender: usenet@ads.com (USENET News)
Organization: Advanced Decision Systems, Mtn. View, CA (415) 960-7300
Lines: 24



For a project I'm working on I'd like to generate an unsigned long
which contains the time of day on Unix systems.  This amounts to usec
in the Unix time.h time_val struct I think.

Is there an algorithm for doing this?  For example I would like to
generate the time for Jan 1 1970 or Jan 1 1904.  Does this algoirthm
also take into acount leap years and LEAP SECONDS?  Are there other
wierdnesses to worry about?

By the way, I know the epoch began in 1970 but there are reasons I
would also like to generate time from 1904 and still state it in Unix
time format in usec's.

Please respond by mail since are news capability is down.  Thanks.



--

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
ORGANIZATION:  Advanced Decision Systems   GEOGRAPHIC: Arlington, VA
UUCP:          kzin!speaker@mimsy.umd.edu  INTERNET:   jtn@potomac.ads.com