kernel-ark/include/linux/bcd.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

21 lines
548 B
C

/* 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 */