Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _BCD_H |
2 | #define _BCD_H | |
3 | ||
d3de851a DB |
4 | #include <linux/compiler.h> |
5 | ||
b53d657d SAS |
6 | #define bcd2bin(x) \ |
7 | (__builtin_constant_p((u8 )(x)) ? \ | |
8 | const_bcd2bin(x) : \ | |
9 | _bcd2bin(x)) | |
10 | ||
11 | #define bin2bcd(x) \ | |
12 | (__builtin_constant_p((u8 )(x)) ? \ | |
13 | const_bin2bcd(x) : \ | |
14 | _bin2bcd(x)) | |
15 | ||
16 | #define const_bcd2bin(x) (((x) & 0x0f) + ((x) >> 4) * 10) | |
17 | #define const_bin2bcd(x) ((((x) / 10) << 4) + (x) % 10) | |
18 | ||
19 | unsigned _bcd2bin(unsigned char val) __attribute_const__; | |
20 | unsigned char _bin2bcd(unsigned val) __attribute_const__; | |
d3de851a | 21 | |
1da177e4 | 22 | #endif /* _BCD_H */ |