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bcd.h
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1/*
2 * Copyright (C) 2017 Freie Universität 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
26extern "C" {
27#endif
28
36static inline uint8_t bcd_from_byte(uint8_t byte)
37{
38 /* ((byte / 10) << 4) | (byte % 10) */
39 return byte + (6 * (byte / 10));
40}
41
49static 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 */
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