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77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
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/* $selId: dow.c,v 2.0 1995/10/24 01:13:06 lees Exp $
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* Copyright 1993-1995, Scott E. Lee, all rights reserved.
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* Permission granted to use, copy, modify, distribute and sell so long as
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* the above copyright and this permission statement are retained in all
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* copies. THERE IS NO WARRANTY - USE AT YOUR OWN RISK.
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*/
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/**************************************************************************
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*
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* These are the externally visible components of this file:
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*
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* int
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* DayOfWeek(
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* long int sdn);
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*
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* Convert a SDN to a day-of-week number (0 to 6). Where 0 stands for
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* Sunday, 1 for Monday, etc. and 6 stands for Saturday.
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*
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* char *DayNameShort[7];
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*
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* Convert a day-of-week number (0 to 6), as returned from DayOfWeek(), to
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* the abbreviated (three character) name of the day.
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*
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* char *DayNameLong[7];
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*
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* Convert a day-of-week number (0 to 6), as returned from DayOfWeek(), to
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* the name of the day.
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*
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**************************************************************************/
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#include "sdncal.h"
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int DayOfWeek(
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long int sdn)
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{
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int dow;
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dow = (sdn + 1) % 7;
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if (dow >= 0) {
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return (dow);
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} else {
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return (dow + 7);
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}
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}
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char *DayNameShort[7] =
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{
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"Sun",
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"Mon",
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"Tue",
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"Wed",
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"Thu",
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"Fri",
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"Sat"
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};
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char *DayNameLong[7] =
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{
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"Sunday",
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"Monday",
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"Tuesday",
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"Wednesday",
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"Thursday",
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"Friday",
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"Saturday"
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};
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: sw=4 ts=4 tw=78 fdm=marker
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* vim<600: sw=4 ts=4 tw=78
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*/
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