include/bcd.h

   1 /* Permission is hereby granted to copy, modify and redistribute this code
   2  * in terms of the GNU Library General Public License, Version 2 or later,
   3  * at your option.
   4  */
   5
   6 /* inline functions to translate to/from binary and binary-coded decimal
   7  * (frequently found in RTC chips).
   8  */
   9
  10 #ifndef _BCD_H
  11 #define _BCD_H
  12
  13 static inline unsigned int bcd2bin(unsigned int val)
  14 {
  15         return ((val) & 0x0f) + ((val & 0xff) >> 4) * 10;
  16 }
  17
  18 static inline unsigned int bin2bcd(unsigned int val)
  19 {
  20         return (((val / 10) << 4) | (val % 10));
  21 }
  22
  23 #endif /* _BCD_H */