/**************************************************************************** * * Open Watcom Project * * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. * * ======================================================================== * * This file contains Original Code and/or Modifications of Original * Code as defined in and that are subject to the Sybase Open Watcom * Public License version 1.0 (the 'License'). You may not use this file * except in compliance with the License. BY USING THIS FILE YOU AGREE TO * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is * provided with the Original Code and Modifications, and is also * available at www.sybase.com/developer/opensource. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR * NON-INFRINGEMENT. Please see the License for the specific language * governing rights and limitations under the License. * * ======================================================================== * * Description: Check if a year is a leap year + associated arrays * ****************************************************************************/ #include "variety.h" #include #include "rtdata.h" #include "timedata.h" short const __based(__segname("_CONST")) __diyr[] = { /* days in normal year array */ 0, /* Jan */ 31, /* Feb */ 31 + 28, /* Mar */ 31 + 28 + 31, /* Apr */ 31 + 28 + 31 + 30, /* May */ 31 + 28 + 31 + 30 + 31, /* Jun */ 31 + 28 + 31 + 30 + 31 + 30, /* Jul */ 31 + 28 + 31 + 30 + 31 + 30 + 31, /* Aug */ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31, /* Sep */ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30, /* Oct */ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, /* Nov */ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, /* Dec */ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 /* Jan, next year */ }; short const __based(__segname("_CONST")) __dilyr[] = { /* days in leap year array */ 0, /* Jan */ 31, /* Feb */ 31 + 29, /* Mar */ 31 + 29 + 31, /* Apr */ 31 + 29 + 31 + 30, /* May */ 31 + 29 + 31 + 30 + 31, /* Jun */ 31 + 29 + 31 + 30 + 31 + 30, /* Jul */ 31 + 29 + 31 + 30 + 31 + 30 + 31, /* Aug */ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31, /* Sep */ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30, /* Oct */ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, /* Nov */ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, /* Dec */ 31 + 29 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 /* Jan, next year */ }; int __leapyear( unsigned year ) { if( year & 3 ) return( 0 ); if( ( year % 100 ) != 0 ) return( 1 ); if( ( year % 400 ) == 0 ) return( 1 ); return( 0 ); }