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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _BCD_H |
3 | #define _BCD_H | |
4 | ||
d3de851a DB |
5 | #include <linux/compiler.h> |
6 | ||
b53d657d SAS |
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 const_bcd2bin(x) (((x) & 0x0f) + ((x) >> 4) * 10) | |
18 | #define const_bin2bcd(x) ((((x) / 10) << 4) + (x) % 10) | |
19 | ||
20 | unsigned _bcd2bin(unsigned char val) __attribute_const__; | |
21 | unsigned char _bin2bcd(unsigned val) __attribute_const__; | |
d3de851a | 22 | |
1da177e4 | 23 | #endif /* _BCD_H */ |