Category : C++ Source Code
Archive   : VCCRT2.ZIP
Filename : DOSTYPES.H

/***
*dostypes.h - defines DOS packed date and time types
*
* Copyright (c) 1987-1992, Microsoft Corporation. All rights reserved.
*
*Purpose:
* This file defines the DOS packed date and time types.
* [Internal]
*
****/


#define MASK4 0xf /* 4 bit mask */
#define MASK5 0x1f /* 5 bit mask */
#define MASK6 0x3f /* 6 bit mask */
#define MASK7 0x7f /* 7 bit mask */

#define DAYLOC 0 /* day value starts in bit 0 */
#define MONTHLOC 5 /* month value starts in bit 5 */
#define YEARLOC 9 /* year value starts in bit 9 */

#define SECLOC 0 /* seconds value starts in bit 0 */
#define MINLOC 5 /* minutes value starts in bit 5 */
#define HOURLOC 11 /* hours value starts in bit 11 */

#define SET_DOS_DAY(dword, xday) dword |= (((xday) & MASK5) << DAYLOC)
#define SET_DOS_MONTH(dword, xmon) dword |= (((xmon) & MASK4) << MONTHLOC)
#define SET_DOS_YEAR(dword, xyr) dword |= (((xyr) & MASK7) << YEARLOC)

#define SET_DOS_HOUR(tword, xhr) tword |= (((xhr) & MASK5) << HOURLOC)
#define SET_DOS_MIN(tword, xmin) tword |= (((xmin) & MASK6) << MINLOC)
#define SET_DOS_SEC(tword, xsec) tword |= (((xsec) & MASK5) << SECLOC)

#define DOS_DAY(dword) (((dword) >> DAYLOC) & MASK5)
#define DOS_MONTH(dword) (((dword) >> MONTHLOC) & MASK4)
#define DOS_YEAR(dword) (((dword) >> YEARLOC) & MASK7)

#define DOS_HOUR(tword) (((tword) >> HOURLOC) & MASK5)
#define DOS_MIN(tword) (((tword) >> MINLOC) & MASK6)
#define DOS_SEC(tword) (((tword) >> SECLOC) & MASK5)

#define XTIME(d,t) _dostotime_t(DOS_YEAR(d),DOS_MONTH(d),DOS_DAY(d),\
DOS_HOUR(t),DOS_MIN(t),DOS_SEC(t)*2)