Open Lighting Architecture: include/ola/util/Utils.h Source File

| Open Lighting Architecture 0.10.9

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Utils.h
1/*
2 * This library is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU Lesser General Public
4 * License as published by the Free Software Foundation; either
5 * version 2.1 of the License, or (at your option) any later version.
6 *
7 * This library is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10 * Lesser General Public License for more details.
11 *
12 * You should have received a copy of the GNU Lesser General Public
13 * License along with this library; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
15 *
16 * Utils.h
17 * Basic util helper functions.
18 * Copyright (C) 2013 Peter Newman
19 */
20
21#ifndef INCLUDE_OLA_UTIL_UTILS_H_
22#define INCLUDE_OLA_UTIL_UTILS_H_
23
24#include <stdint.h>
25
26#include <limits>
27
28namespace ola {
29namespace utils {
30
37 inline void SplitUInt16(uint16_t input, uint8_t *high, uint8_t *low) {
38 *high = static_cast<uint8_t>((input >> std::numeric_limits<uint8_t>::digits) &
39 std::numeric_limits<uint8_t>::max());
40 *low = static_cast<uint8_t>(input & std::numeric_limits<uint8_t>::max());
41}
42
43
50 inline uint16_t JoinUInt8(uint8_t high, uint8_t low) {
51 return static_cast<uint16_t>(
52 (static_cast<uint16_t>(high) << std::numeric_limits<uint8_t>::digits)
53 | low);
54}
55
56
65inline uint32_t JoinUInt8(uint8_t byte0, uint8_t byte1, uint8_t byte2,
66 uint8_t byte3) {
67 return ((static_cast<uint32_t>(byte0) <<
68 (std::numeric_limits<uint8_t>::digits * 3))
69 | (static_cast<uint32_t>(byte1) <<
70 (std::numeric_limits<uint8_t>::digits * 2))
71 | (static_cast<uint32_t>(byte2) <<
72 (std::numeric_limits<uint8_t>::digits))
73 | byte3);
74}
75} // namespace utils
76} // namespace ola
77#endif // INCLUDE_OLA_UTIL_UTILS_H_
ola::rdm::JoinUInt8
uint16_t JoinUInt8(uint8_t high, uint8_t low)
Convert two uint8_t's to a uint16_t.
Definition Utils.h:50
ola::rdm::SplitUInt16
void SplitUInt16(uint16_t input, uint8_t *high, uint8_t *low)
Convert a uint16_t to two uint8_t's.
Definition Utils.h:37
ola
The namespace containing all OLA symbols.
Definition Credentials.cpp:44