| 1 |
|
| 2 | #ifndef _BCD_H
|
| 3 | #define _BCD_H
|
| 4 |
|
| 5 | #include <linux/compiler.h>
|
| 6 |
|
| 7 | #define bcd2bin(x) \
|
| 8 | (__builtin_constant_p((u8 )(x)) ? \
|
| 9 | const_bcd2bin(x) : \
|
| 10 | _bcd2bin(x))
|
| 11 |
|
| 12 | #define bin2bcd(x) \
|
| 13 | (__builtin_constant_p((u8 )(x)) ? \
|
| 14 | const_bin2bcd(x) : \
|
| 15 | _bin2bcd(x))
|
| 16 |
|
| 17 | #define bcd_is_valid(x) \
|
| 18 | const_bcd_is_valid(x)
|
| 19 |
|
| 20 | #define const_bcd2bin(x) (((x) & 0x0f) + ((x) >> 4) * 10)
|
| 21 | #define const_bin2bcd(x) ((((x) / 10) << 4) + (x) % 10)
|
| 22 | #define const_bcd_is_valid(x) (((x) & 0x0f) < 10 && ((x) >> 4) < 10)
|
| 23 |
|
| 24 | unsigned _bcd2bin(unsigned char val) __attribute_const__;
|
| 25 | unsigned char _bin2bcd(unsigned val) __attribute_const__;
|
| 26 |
|
| 27 | #endif
|