46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
// 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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#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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