42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
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/***
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*ctime.h - constant for dates and times
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*
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* Copyright (c) 1985-1993, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Include file used by the ctime routines containing definitions of
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* various constants used in determining dates and times.
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* [Internal]
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*
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*Revision History:
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* 03-??-84 RLB written
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* 05-??-84 DFW split out the constant from each routine into this file
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* 07-27-89 GJF Fixed copyright
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* 10-30-89 GJF Fixed copyright (again)
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* 02-28-90 GJF Added #ifndef _INC_CTIME stuff.
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* 03-29-93 GJF Revised constants.
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*
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****/
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#ifndef _INC_CTIME
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#define _DAY_SEC (24L * 60L * 60L) /* secs in a day */
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#define _YEAR_SEC (365L * _DAY_SEC) /* secs in a year */
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#define _FOUR_YEAR_SEC (1461L * _DAY_SEC) /* secs in a 4 year interval */
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#define _DEC_SEC 315532800L /* secs in 1970-1979 */
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#define _BASE_YEAR 70L /* 1970 is the base year */
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#define _BASE_DOW 4 /* 01-01-70 was a Thursday */
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#define _LEAP_YEAR_ADJUST 17L /* Leap years 1900 - 1970 */
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#define _MAX_YEAR 138L /* 2038 is the max year */
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#define _INC_CTIME
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#endif /* _INC_CTIME */
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