/* $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.
*/
/**************************************************************************
*
* 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(
zend_long 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"
};
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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