From owner-freebsd-hackers  Fri Mar 12  1:23:26 1999
Delivered-To: freebsd-hackers@freebsd.org
Received: from relay.ucb.crimea.ua (relay.ucb.crimea.ua [212.110.138.1])
	by hub.freebsd.org (Postfix) with ESMTP id C4EAE14BCD
	for <freebsd-hackers@FreeBSD.ORG>; Fri, 12 Mar 1999 01:22:34 -0800 (PST)
	(envelope-from ru@ucb.crimea.ua)
Received: (from ru@localhost)
	by relay.ucb.crimea.ua (8.9.2/8.9.2/UCB) id LAA94258;
	Fri, 12 Mar 1999 11:18:41 +0200 (EET)
	(envelope-from ru)
Date: Fri, 12 Mar 1999 11:18:41 +0200
From: Ruslan Ermilov <ru@ucb.crimea.ua>
To: Julian Elischer <julian@whistle.com>
Cc: Florin Nicolescu <fnicoles@pcnet.pcnet.ro>,
	FreeBSD-hackers <freebsd-hackers@FreeBSD.ORG>
Subject: Re: Y2K bug
Message-ID: <19990312111841.A91406@relay.ucb.crimea.ua>
Mail-Followup-To: Julian Elischer <julian@whistle.com>,
	Florin Nicolescu <fnicoles@pcnet.pcnet.ro>,
	FreeBSD-hackers <freebsd-hackers@FreeBSD.ORG>
References: <199903120731.JAA11891@nick.ro> <Pine.BSF.3.95.990312002949.3160A-100000@current1.whistle.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Mailer: Mutt 0.95.3i
In-Reply-To: <Pine.BSF.3.95.990312002949.3160A-100000@current1.whistle.com>; from Julian Elischer on Fri, Mar 12, 1999 at 12:35:57AM -0800
X-Operating-System: FreeBSD 3.1-STABLE i386
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

Or, according to Kernighan & Ritchie's "The C Programming Language",
Second Edition:


if (Year % 4 == 0 && Year % 100 != 0 || Year % 400 == 0)
	Feb = 29;
else
	Feb = 28;


On Fri, Mar 12, 1999 at 12:35:57AM -0800, Julian Elischer wrote:
> 
> 
> no
> 
> 
> if ((Year % 4) == 0) {
>   if ((Year % 100) == 0) {
>     if (( Year % 400) == 0) {
>       Feb = 29;
>     } else {
>       Feb = 28;
>     }
>   } else {
>     Feb = 29;
>   }
> } else {
>    Feb = 28;
> }
> 
> 
> 
> On Fri, 12 Mar 1999, Florin Nicolescu wrote:
> 
> > Hi,
> > 
> > According to the discontinuities in the earth move around the sun, once
> > a four years there is inserted an extra day (29 of February), but once a
> > 400 years (when the first 2 digits of the year divide by 4) it is not
> > added. This is the case for 2000 (20 mod 4 = 0). When I inserted the
> > date 29 of February 2000 in FreeBSD, it has accepted it OK, meaning that
> > it believes that 2000 has the date 29 of Feb. I don't know about other
> > systems, but I know that a lot of people ignore this rule (I've just
> > looked into my agenda, and it has the same error). 
> > 
> > Ciao,
> > Nick
> >  
> > -- 
> > ------------------------------------------------------------------
> > |       Florin-Nicolae Nicolescu <fnicoles@pcnet.pcnet.ro>       |
> > |        University of Bucharest, Faculty of Mathematics         |
> > |                       Bucharest,Romania                        |
> > ------------------------------------------------------------------
> > |             Friends don't let friends use Windows.             |
> > |    Double your hard drive space instantly! Delete Windows!     |
> > ------------------------------------------------------------------
> > 


Cheers,
-- 
Ruslan Ermilov		Sysadmin and DBA of the
ru@ucb.crimea.ua	United Commercial Bank
+380.652.247.647	Simferopol, Ukraine

http://www.FreeBSD.org	The Power To Serve
http://www.oracle.com	Enabling The Information Age


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message