diff options
Diffstat (limited to 'include/linux/bcd.h')
| -rw-r--r-- | include/linux/bcd.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/bcd.h b/include/linux/bcd.h index 118bea36d7d4..abbc8149178e 100644 --- a/include/linux/bcd.h +++ b/include/linux/bcd.h @@ -14,8 +14,12 @@ const_bin2bcd(x) : \ _bin2bcd(x)) +#define bcd_is_valid(x) \ + const_bcd_is_valid(x) + #define const_bcd2bin(x) (((x) & 0x0f) + ((x) >> 4) * 10) #define const_bin2bcd(x) ((((x) / 10) << 4) + (x) % 10) +#define const_bcd_is_valid(x) (((x) & 0x0f) < 10 && ((x) >> 4) < 10) unsigned _bcd2bin(unsigned char val) __attribute_const__; unsigned char _bin2bcd(unsigned val) __attribute_const__; |