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23 lines
559 B
23 lines
559 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _BCD_H |
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#define _BCD_H |
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#include <linux/compiler.h> |
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#define bcd2bin(x) \ |
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(__builtin_constant_p((u8 )(x)) ? \ |
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const_bcd2bin(x) : \ |
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_bcd2bin(x)) |
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#define bin2bcd(x) \ |
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(__builtin_constant_p((u8 )(x)) ? \ |
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const_bin2bcd(x) : \ |
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_bin2bcd(x)) |
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#define const_bcd2bin(x) (((x) & 0x0f) + ((x) >> 4) * 10) |
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#define const_bin2bcd(x) ((((x) / 10) << 4) + (x) % 10) |
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unsigned _bcd2bin(unsigned char val) __attribute_const__; |
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unsigned char _bin2bcd(unsigned val) __attribute_const__; |
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#endif /* _BCD_H */
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