1/* Permission is hereby granted to copy, modify and redistribute this code 2 * in terms of the GNU Library General Public License, Version 2 or later, 3 * at your option. 4 */ 5 6/* macros to translate to/from binary and binary-coded decimal (frequently 7 * found in RTC chips). 8 */ 9 10#ifndef _BCD_H 11#define _BCD_H 12 13#define BCD2BIN(val) (((val) & 0x0f) + ((val)>>4)*10) 14#define BIN2BCD(val) ((((val)/10)<<4) + (val)%10) 15 16/* backwards compat */ 17#define BCD_TO_BIN(val) ((val)=BCD2BIN(val)) 18#define BIN_TO_BCD(val) ((val)=BIN2BCD(val)) 19 20#endif /* _BCD_H */ 21