28 lines
683 B
C
28 lines
683 B
C
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/* 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 bcd_is_valid(x) \
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const_bcd_is_valid(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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#define const_bcd_is_valid(x) (((x) & 0x0f) < 10 && ((x) >> 4) < 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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