xref: /OK3568_Linux_fs/u-boot/include/bcd.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* Permission is hereby granted to copy, modify and redistribute this code
2*4882a593Smuzhiyun  * in terms of the GNU Library General Public License, Version 2 or later,
3*4882a593Smuzhiyun  * at your option.
4*4882a593Smuzhiyun  */
5*4882a593Smuzhiyun 
6*4882a593Smuzhiyun /* inline functions to translate to/from binary and binary-coded decimal
7*4882a593Smuzhiyun  * (frequently found in RTC chips).
8*4882a593Smuzhiyun  */
9*4882a593Smuzhiyun 
10*4882a593Smuzhiyun #ifndef _BCD_H
11*4882a593Smuzhiyun #define _BCD_H
12*4882a593Smuzhiyun 
bcd2bin(unsigned int val)13*4882a593Smuzhiyun static inline unsigned int bcd2bin(unsigned int val)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun 	return ((val) & 0x0f) + ((val & 0xff) >> 4) * 10;
16*4882a593Smuzhiyun }
17*4882a593Smuzhiyun 
bin2bcd(unsigned int val)18*4882a593Smuzhiyun static inline unsigned int bin2bcd(unsigned int val)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun 	return (((val / 10) << 4) | (val % 10));
21*4882a593Smuzhiyun }
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun #endif /* _BCD_H */
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