blob: 4a773a2dafe34f0e9ec296b3332f7feb4c6df69a (
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
|
/*
* Some standard helpful macros.
*
* The canonical version of this file is maintained in the rra-c-util package,
* which can be found at <http://www.eyrie.org/~eagle/software/rra-c-util/>.
*
* Written by Russ Allbery <eagle@eyrie.org>
*
* The authors hereby relinquish any claim to any copyright that they may have
* in this work, whether granted under contract or by operation of law or
* international treaty, and hereby commit to the public, at large, that they
* shall not, at any time in the future, seek to enforce any copyright in this
* work against any person or entity, or prevent any person or entity from
* copying, publishing, distributing or creating derivative works of this
* work.
*/
#ifndef UTIL_MACROS_H
#define UTIL_MACROS_H 1
#include <portable/macros.h>
/*
* Used for iterating through arrays. ARRAY_SIZE returns the number of
* elements in the array (useful for a < upper bound in a for loop) and
* ARRAY_END returns a pointer to the element past the end (ISO C99 makes it
* legal to refer to such a pointer as long as it's never dereferenced).
*/
#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
#define ARRAY_END(array) (&(array)[ARRAY_SIZE(array)])
/* Used to name the elements of the array passed to pipe. */
#define PIPE_READ 0
#define PIPE_WRITE 1
/* Used for unused parameters to silence gcc warnings. */
#define UNUSED __attribute__((__unused__))
#endif /* UTIL_MACROS_H */
|
