1#ifndef _BCD_H
2#define _BCD_H
3
4#include <linux/compiler.h>
5
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
19unsigned _bcd2bin(unsigned char val) __attribute_const__;
20unsigned char _bin2bcd(unsigned val) __attribute_const__;
21
22#endif /* _BCD_H */
23