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| 1 | /* Permission is hereby granted to copy, modify and redistribute this code |
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| 2 | * in terms of the GNU Library General Public License, Version 2 or later, |
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| 3 | * at your option. |
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| 4 | */ |
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| 5 | |
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| 6 | /* macros to translate to/from binary and binary-coded decimal (frequently |
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| 7 | * found in RTC chips). |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef _BCD_H |
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| 11 | #define _BCD_H |
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| 12 | |
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| 13 | #define BCD2BIN(val) (((val) & 0x0f) + ((val)>>4)*10) |
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| 14 | #define BIN2BCD(val) ((((val)/10)<<4) + (val)%10) |
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| 15 | |
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| 16 | /* backwards compat */ |
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| 17 | #define BCD_TO_BIN(val) ((val)=BCD2BIN(val)) |
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| 18 | #define BIN_TO_BCD(val) ((val)=BIN2BCD(val)) |
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| 19 | |
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| 20 | #endif /* _BCD_H */ |
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