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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/bcd.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2v2.6.12-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!
Diffstat (limited to 'include/linux/bcd.h')
-rw-r--r-- | include/linux/bcd.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/bcd.h b/include/linux/bcd.h new file mode 100644 index 000000000000..c545308125b0 --- /dev/null +++ b/include/linux/bcd.h @@ -0,0 +1,20 @@ +/* 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 */ |