| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |