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From: ah@alvman.RoBIN.de (Andreas Haakh)
Newsgroups: comp.unix.bsd
Subject: Re: [386bsd] New patch00071 is slightly wrong
Date: 1 Feb 1993 14:21:11 +0100
Lines: 17
Message-ID: <1kj847INNd5@alvman.RoBIN.de>
References: <bIQKePhq40@astral.msk.su>
NNTP-Posting-Host: localhost
"Andrew A. Chernov, Black Mage" <ache@astral.msk.su> writes:
>I just look into new patch00071 of clock.c and found small bug,
>it don't calculate leap year properly, produce error in 2000 year.
>! if (sec < 1970)
>! sec += 100;
>! leap = !(sec % 4); sec = ytos(sec); /* year */
>Correct way to calculate leap year is:
>#define isleap(y) (((y) % 4) == 0 && ((y) % 100) != 0 || ((y) % 400) == 0)
^^^^^^^^^^^^^^^^^
Year 2000 is a leap-year anyway! So the code is goot up to year 2099.
Who will be using 386bsd then??
Andreas