blob: 65cc2c5d9cb2d1b1087ea33e4fc4b031302441d9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/* USRP E310 Firmware Misc utility macros
* Copyright (C) 2014 Ettus Research
* This file is part of the USRP E310 Firmware
* The USRP E310 Firmware is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
* The USRP E310 Firmware is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with the USRP E310 Firmware. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file utils.h
* \brief Misc utility macros
*/
#ifndef UTILS_H
#define UTILS_H
#include <stddef.h>
/**
* \brief Returns the size of a (static) array
*
* \param x Array
* \warning Do NOT use on pointers
*/
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
/**
* \brief A ISO compliant version of the linux kernel's container_of macro.
* This allows implementing multiple interfaces in a struct.
*/
#ifdef __GNUC__
#define member_type(type, member) __typeof__ (((type *)0)->member)
#else
#define member_type(type, member) const void
#endif
#define container_of(ptr, type, member) ((type *)( \
(char *)(member_type(type, member) *){ ptr } - offsetof(type, member)))
/**
* \brief Convenience macro to make bitmasks more readable
*/
#define BIT(bit) (1 << (bit))
#endif /* UTILS_H */
|
