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47 lines
1.6 KiB
47 lines
1.6 KiB
/*** nmtime.h - defines DOS packed date and time types
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*
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* Copyright (c) 1987-1990, Microsoft Corporation. All rights reserved.
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*
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* Purpose:
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* This file defines the DOS packed date and time types.
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*
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* Revision History:
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* 19-May-1993 HV Changed _dtoxtime() to _dostotime_t() so that we can
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* use the standard llibce.lib instead of the private
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* llibcer.lib.
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* 04-Dec-1989 SB added proper fn proto for _dtoxtime() (c6 -W3 reqmemt)
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* 05-Dec-1988 SB added CDECL for _dtoxtime()
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* ??-???-???? ?? Taken from dostypes.h
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*
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*******************************************************************************/
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#define MASK4 0xf /* 4 bit mask */
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#define MASK5 0x1f /* 5 bit mask */
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#define MASK6 0x3f /* 6 bit mask */
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#define MASK7 0x7f /* 7 bit mask */
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#define DAYLOC 0 /* day value starts in bit 0 */
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#define MONTHLOC 5 /* month value starts in bit 5 */
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#define YEARLOC 9 /* year value starts in bit 9 */
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#define SECLOC 0 /* seconds value starts in bit 0 */
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#define MINLOC 5 /* minutes value starts in bit 5 */
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#define HOURLOC 11 /* hours value starts in bit 11 */
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#define DOS_DAY(dword) (((dword) >> DAYLOC) & MASK5)
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#define DOS_MONTH(dword) (((dword) >> MONTHLOC) & MASK4)
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#define DOS_YEAR(dword) (((dword) >> YEARLOC) & MASK7)
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#define DOS_HOUR(tword) (((tword) >> HOURLOC) & MASK5)
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#define DOS_MIN(tword) (((tword) >> MINLOC) & MASK6)
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#define DOS_SEC(tword) (((tword) >> SECLOC) & MASK5)
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extern time_t CDECL _dostotime_t(int, int, int, int, int, int);
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#define XTIME(d,t) _dostotime_t(DOS_YEAR(d), \
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DOS_MONTH(d), \
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DOS_DAY(d), \
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DOS_HOUR(t), \
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DOS_MIN(t), \
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DOS_SEC(t)*2)
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