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File: [Development] / linux-2.6-xfs / include / linux / bcd.h (download)

Revision 1.1, Tue Dec 30 23:58:53 2003 UTC (13 years, 9 months ago) by cattelan
Branch: MAIN

Initial Import 2.6.0

/* Permission is hereby granted to copy, modify and redistribute this code
 * in terms of the GNU Library General Public License, Version 2 or later,
 * at your option.
 */

/* macros to translate to/from binary and binary-coded decimal (frequently
 * found in RTC chips).
 */

#ifndef _BCD_H
#define _BCD_H

#define BCD2BIN(val)	(((val) & 0x0f) + ((val)>>4)*10)
#define BIN2BCD(val)	((((val)/10)<<4) + (val)%10)

/* backwards compat */
#define BCD_TO_BIN(val) ((val)=BCD2BIN(val))
#define BIN_TO_BCD(val) ((val)=BIN2BCD(val))

#endif /* _BCD_H */