blob: 18fff11fb3eadbe6ebd715a584aa49909d1dd30f (
plain) (
tree)
|
|
#ifndef _BCD_H
#define _BCD_H
#include <linux/compiler.h>
#define bcd2bin(x) \
(__builtin_constant_p((u8 )(x)) ? \
const_bcd2bin(x) : \
_bcd2bin(x))
#define bin2bcd(x) \
(__builtin_constant_p((u8 )(x)) ? \
const_bin2bcd(x) : \
_bin2bcd(x))
#define const_bcd2bin(x) (((x) & 0x0f) + ((x) >> 4) * 10)
#define const_bin2bcd(x) ((((x) / 10) << 4) + (x) % 10)
unsigned _bcd2bin(unsigned char val) __attribute_const__;
unsigned char _bin2bcd(unsigned val) __attribute_const__;
#endif /* _BCD_H */
|
