Path: utzoo!yunexus!maccs!gordan
From: gordan@maccs.McMaster.CA (gordan)
Newsgroups: comp.lang.c
Subject: Re: Date Coversion Routines
Keywords: source, julian date
Message-ID: <1508@maccs.McMaster.CA>
Date: 20 Oct 88 01:09:30 GMT
Article-I.D.: maccs.1508
References: <5522@hoptoad.uucp> <44100014@hcx2> <7618@rpp386.Dallas.TX.US> <1483@maccs.McMaster.CA> <483@midgard.mn.org>
Reply-To: gordan@maccs.UUCP ()
Organization: Worldwide Phlogiston Cartel
Lines: 19

In article <483@midgard.mn.org> dal@syntel.UUCP (Dale Schumacher) writes:
-In article <1483@maccs.McMaster.CA> gordan@maccs.UUCP () writes:
-|
-|The two functions are astonishingly short, using some sort of floating
-|point trickery.  They seemed to work when I tested them.  Conversion to
-|C is left as an exercise for the reader.
-
-I don't think floating point is required.  I know that it isn't for the
-formula that I have.  I haven't compared the to closely enough (nor do I

[code omitted]

Yes, but the code you supply only does   D/M/Y --> JD, not vice versa.

Believe it or not, there's a one-line Fortran statement that does
D/M/Y --> JD, which was also published in Sky & Telescope in 1984.

Actually it was the "vice versa" routine (JD --> D/M/Y) that did the
floating point.