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Article #708

TIMEX (all versions) bug in date handling

#708
From: Harald Tveit Alvestrand
Date: Tue, 12 Jan 1993 09:40
35 lines
1638 bytes
Since 1993 arrived, many people have found a bug in the TIMEX summing
program "sumtimex", that makes the day of week be 2 days wrong in 1993.
I do not want to do much official work on this, since I have a new version
"nearly" ready to ship (status unchanged since September - been too busy
doing real work) - but here is the patch, anyway.

The following patch must be applied:

diff -c -r1.1 weekno.perl
*** 1.1 1991/08/22 13:41:37
--- weekno.perl 1993/01/04 23:53:47
***************
*** 60,66 ****
     local($wday) = $firstday[6];
     # Rule works for some years.....89 to 92 tested, they all hit branch 2...
     if ($wday > 3) {
!       $ret = 6 - $wday;
     } else {
        $ret = 1 - $wday;
     }
--- 60,66 ----
     local($wday) = $firstday[6];
     # Rule works for some years.....89 to 92 tested, they all hit branch 2...
     if ($wday > 3) {
!       $ret = 8 - $wday;
     } else {
        $ret = 1 - $wday;
     }


-- 
                   Harald Tveit Alvestrand
Harald.Alvestrand@delab.sintef.no
C=no;PRMD=uninett;O=sintef;OU=delab;S=alvestrand;G=harald
+47 7 59 70 94
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Path: arc1-ca.pugleaf.net!sparky!uunet!paladin.american.edu!howland.reston.ans.net!usc!enterpoop.mit.edu!eru.mt.luth.se!lunic!sunic!ugle.unit.no!boheme.er.sintef.no!hta

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Path: arc1-ca.pugleaf.net!sparky!uunet!paladin.american.edu!howland.reston.ans.net!usc!enterpoop.mit.edu!eru.mt.luth.se!lunic!sunic!ugle.unit.no!boheme.er.sintef.no!hta
From: hta@boheme.er.sintef.no (Harald Tveit Alvestrand)
Newsgroups: comp.sources.bugs
Subject: TIMEX (all versions) bug in date handling
Message-ID: <1993Jan12.094035.24923@ugle.unit.no>
Date: 12 Jan 93 09:40:35 GMT
Sender: news@ugle.unit.no (NetNews Administrator)
Reply-To: harald.alvestrand@delab.sintef.no
Organization: SINTEF DELAB, Norway
Lines: 35