summaryrefslogblamecommitdiff
path: root/include/linux/bcd.h
blob: 118bea36d7d49082d5725a9b9d2ecadb40898846 (plain) (tree) 
b24413180f56 ^

1da177e4c3f4



d3de851a4451 ^


b53d657d84f5 ^















d3de851a4451 ^

1da177e4c3f4

1

2
3
4

5
6

7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

22

23

                                      


              

                           














                                                                
 
                   
/* SPDX-License-Identifier: GPL-2.0 */
#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 */