bcd.h
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1 /*
2  * Copyright (C) 2017 Freie Universit├Ąt Berlin
3  *
4  * This file is subject to the terms and conditions of the GNU Lesser
5  * General Public License v2.1. See the file LICENSE in the top level
6  * directory for more details.
7  */
8 
20 #ifndef BCD_H
21 #define BCD_H
22 
23 #include <stdint.h>
24 
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28 
36 static inline uint8_t bcd_from_byte(uint8_t byte)
37 {
38  /* ((byte / 10) << 4) | (byte % 10) */
39  return byte + (6 * (byte / 10));
40 }
41 
49 static inline uint8_t bcd_to_byte(uint8_t bcd)
50 {
51  /* == (10 * (bcd >> 4)) + (bcd & 0xf) */
52  return bcd - (6 * (bcd >> 4));
53 }
54 
55 #ifdef __cplusplus
56 }
57 #endif
58 
59 #endif /* BCD_H */
60 
static uint8_t bcd_to_byte(uint8_t bcd)
Converts a binary coded decimal to a byte.
Definition: bcd.h:49
static uint8_t bcd_from_byte(uint8_t byte)
Converts a byte to a binary coded decimal.
Definition: bcd.h:36