Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: What about my last date functions? there are some error? |
| Date | 2016-11-08 15:46 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <871sym9dpv.fsf@bsb.me.uk> (permalink) |
| References | <gh932ctlqkebuct208fqbbc7rdak1b2c1o@4ax.com> <87d1i69r5w.fsf@bsb.me.uk> <nvsd9k$nd4$1@dont-email.me> |
Richard Heathfield <rjh@cpax.org.uk> writes:
<snip>
> My own Julian date routines (at least, the ones for converting to and
> from Julian date) are completely unreadable, because I stole the
> algorithm from the Web rather than devising it myself. I spent about
> an hour figuring out how it worked, neglected to write it down on that
> occasion, and have never since summoned up the energy to repeat the
> analysis.
>
> It was so unreadable that I tried to make it worse! I wrote a
> 'compressed' version of it (with minimal line count and minimal
> spaces) just for fun.
How odd. Maybe a joke I'm not getting.
> long tojul(int yp,int mp,int dp){long
> a=(14-mp)/12,y=yp+4800-a,m=mp+12*a-3,jdn=dp+(153*m+2)/5+365*y+y/4-y/100+y/400-32045;return
> jdn;}
> void fromjul(int*yp,int*mp,int*dp,long jdn){long
> y=4716,j=1401,m=2,n=12,r=4,p=1461,v=3,u=5,s=153,w=2,b=274277,c=-38,f=jdn+j+(((4*jdn+b)/146097)*3)/4+c,e=r*f+v,g=(e%p)/r,h=u*g+w;*dp=(h%s)/u+1;*mp=((h/s+m)%n)+1;*yp=e/p-y+(n+m-*mp)/n;}
I usually use the standard library function for this sort of thing, but
if this works for you why rock the boat?
> But I never thought of a struct. So thanks for that.
If you use the standard library functions there's even one ready to be
used.
--
Ben.
Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
What about my last date functions? there are some error? Rosario19 <Ros@invalid.invalid> - 2016-11-08 11:28 +0100
Re: What about my last date functions? there are some error? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-08 10:55 +0000
Re: What about my last date functions? there are some error? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-08 19:00 +0800
Re: What about my last date functions? there are some error? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-08 11:04 +0000
Re: What about my last date functions? there are some error? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-08 19:22 +0800
Re: What about my last date functions? there are some error? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-08 11:35 +0000
Re: What about my last date functions? there are some error? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-08 15:46 +0000
Re: What about my last date functions? there are some error? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-08 16:20 +0000
Re: What about my last date functions? there are some error? Rosario19 <Ros@invalid.invalid> - 2016-11-08 17:44 +0100
Re: What about my last date functions? there are some error? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-08 16:51 +0000
Re: What about my last date functions? there are some error? Jerry Stuckle <jstucklex@attglobal.net> - 2016-11-08 13:21 -0500
Re: What about my last date functions? there are some error? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-08 18:06 +0000
Re: What about my last date functions? there are some error? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-08 18:56 +0000
Re: What about my last date functions? there are some error? Keith Thompson <kst-u@mib.org> - 2016-11-08 12:05 -0800
Re: What about my last date functions? there are some error? David Brown <david.brown@hesbynett.no> - 2016-11-08 21:10 +0100
Re: What about my last date functions? there are some error? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-08 20:16 +0000
Re: What about my last date functions? there are some error? jadill33@gmail.com - 2016-11-08 11:16 -0800
Re: What about my last date functions? there are some error? Richard Heathfield <rjh@cpax.org.uk> - 2016-11-08 20:08 +0000
Re: What about my last date functions? there are some error? Keith Thompson <kst-u@mib.org> - 2016-11-08 12:11 -0800
Re: What about my last date functions? there are some error? Keith Thompson <kst-u@mib.org> - 2016-11-08 12:29 -0800
Re: What about my last date functions? there are some error? Rosario19 <Ros@invalid.invalid> - 2016-11-08 17:41 +0100
Re: What about my last date functions? there are some error? asetofsymbols@gmail.com - 2016-11-08 11:26 -0800
Re: What about my last date functions? there are some error? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-11-08 19:38 +0000
Re: What about my last date functions? there are some error? Keith Thompson <kst-u@mib.org> - 2016-11-08 08:19 -0800
csiph-web