Date functionality

[Richard Stead]

In article <8931 at ubc-cs.UUCP>, buckland at cheddar.ucs.ubc.ca (Tony Buckland) writes:
>   Let's see if I can get it right this time.  The statement function
>   following will work:
> 
>    DOW(ID,IM,IC,IY)=MOD((26*IM-2)/10+ID+IY+IY/4+IC/4-2*IC,7)

Ouch, smells like FORTRASH.  Isn't this comp.lang.c?  Steve Clamage
already posted the C version of this (Zeller's congruence).  If you
want a function, #define it.

--Richard Stead
stead at seismo.css.gov