libosmocore 0.9.6-23.20170220git32ee5af8.fc42
Osmocom core library
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bit16gen.h
1/*
2 * bit16gen.h
3 *
4 * Copyright (C) 2014 Max <max.suraev@fairwaves.co>
5 *
6 * All Rights Reserved
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 */
22
23#pragma once
24
30static inline uint16_t osmo_load16le_ext(const void *p, uint8_t n)
31{
32 uint8_t i;
33 uint16_t r = 0;
34 const uint8_t *q = (uint8_t *)p;
35 for(i = 0; i < n; r |= ((uint16_t)q[i] << (8 * i)), i++);
36 return r;
37}
38
44static inline uint16_t osmo_load16be_ext(const void *p, uint8_t n)
45{
46 uint8_t i;
47 uint16_t r = 0;
48 const uint8_t *q = (uint8_t *)p;
49 for(i = 0; i < n; r |= ((uint16_t)q[i] << (16 - 8* (1 + i))), i++);
50 return r;
51}
52
53
59static inline void osmo_store16le_ext(uint16_t x, void *p, uint8_t n)
60{
61 uint8_t i;
62 uint8_t *q = (uint8_t *)p;
63 for(i = 0; i < n; q[i] = (x >> i * 8) & 0xFF, i++);
64}
65
71static inline void osmo_store16be_ext(uint16_t x, void *p, uint8_t n)
72{
73 uint8_t i;
74 uint8_t *q = (uint8_t *)p;
75 for(i = 0; i < n; q[i] = (x >> ((n - 1 - i) * 8)) & 0xFF, i++);
76}
77
78
79/* Convenience function for most-used cases */
80
81
83static inline uint16_t osmo_load16le(const void *p)
84{
85 return osmo_load16le_ext(p, 16 / 8);
86}
87
89static inline uint16_t osmo_load16be(const void *p)
90{
91 return osmo_load16be_ext(p, 16 / 8);
92}
93
94
96static inline void osmo_store16le(uint16_t x, void *p)
97{
98 osmo_store16le_ext(x, p, 16 / 8);
99}
100
102static inline void osmo_store16be(uint16_t x, void *p)
103{
104 osmo_store16be_ext(x, p, 16 / 8);
105}