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  1. /****************************************************************************
  2. *
  3. *                            Open Watcom Project
  4. *
  5. *    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
  6. *
  7. *  ========================================================================
  8. *
  9. *    This file contains Original Code and/or Modifications of Original
  10. *    Code as defined in and that are subject to the Sybase Open Watcom
  11. *    Public License version 1.0 (the 'License'). You may not use this file
  12. *    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
  13. *    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
  14. *    provided with the Original Code and Modifications, and is also
  15. *    available at www.sybase.com/developer/opensource.
  16. *
  17. *    The Original Code and all software distributed under the License are
  18. *    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  19. *    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
  20. *    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
  21. *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
  22. *    NON-INFRINGEMENT. Please see the License for the specific language
  23. *    governing rights and limitations under the License.
  24. *
  25. *  ========================================================================
  26. *
  27. * Description:  Specification of <time.h> internal interfaces.
  28. *
  29. ****************************************************************************/
  30.  
  31. #ifndef TIMEDATA_H_INCLUDED
  32. #define TIMEDATA_H_INCLUDED
  33.  
  34. #include "variety.h"
  35. #include <time.h>
  36.  
  37. extern int              __dst_adjust;
  38. extern struct tm        __start_dst; /* start of daylight savings */
  39. extern struct tm        __end_dst;   /* end of daylight savings */
  40.  
  41. #define SECONDS_FROM_1900_TO_1970       2208988800UL
  42. #define SECONDS_PER_DAY                 ( 24 * 60 * 60UL )
  43. #define DAYS_FROM_1900_TO_1970          ( ( long ) ( SECONDS_FROM_1900_TO_1970 / SECONDS_PER_DAY ) )
  44.  
  45. extern struct tm        *__brktime( unsigned long, time_t, long, struct tm * );
  46. extern time_t           __local_mktime( const struct tm *, long *, long * );
  47. extern int              __leapyear( unsigned );
  48. extern int              __isindst( struct tm * );
  49. extern int              __getctime( struct tm * );
  50. extern int              __read_tzfile( const char *tz );
  51. extern void             __check_tzfile( time_t t, struct tm *timep );
  52.  
  53. extern short const __based(__segname("_CONST"))        __diyr[];  /* days in normal year array */
  54. extern short const __based(__segname("_CONST"))        __dilyr[]; /* days in leap year array */
  55.  
  56. #endif
  57.