/* $selId: dow.c,v 2.0 1995/10/24 01:13:06 lees Exp $ * Copyright 1993-1995, Scott E. Lee, all rights reserved. * Permission granted to use, copy, modify, distribute and sell so long as * the above copyright and this permission statement are retained in all * copies.  THERE IS NO WARRANTY - USE AT YOUR OWN RISK. * * $Id: dow.c,v 1.2 1998/12/28 09:34:47 sas Exp $  *//************************************************************************** * * These are the externally visible components of this file: * *     int *     DayOfWeek( *         long int sdn); * * Convert a SDN to a day-of-week number (0 to 6).  Where 0 stands for * Sunday, 1 for Monday, etc. and 6 stands for Saturday. * *     char *DayNameShort[7]; * * Convert a day-of-week number (0 to 6), as returned from DayOfWeek(), to * the abbreviated (three character) name of the day. * *     char *DayNameLong[7]; * * Convert a day-of-week number (0 to 6), as returned from DayOfWeek(), to * the name of the day. * **************************************************************************/#include "sdncal.h"int DayOfWeek(				 long int sdn){	int dow;	dow = (sdn + 1) % 7;	if (dow >= 0) {		return (dow);	} else {		return (dow + 7);	}}char *DayNameShort[7] ={	"Sun",	"Mon",	"Tue",	"Wed",	"Thu",	"Fri",	"Sat"};char *DayNameLong[7] ={	"Sunday",	"Monday",	"Tuesday",	"Wednesday",	"Thursday",	"Friday",	"Saturday"};