Contributors: 3
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Lorenzo Stoakes |
81 |
89.01% |
1 |
25.00% |
| Ihor Solodrai |
6 |
6.59% |
1 |
25.00% |
| Martin KaFai Lau |
4 |
4.40% |
2 |
50.00% |
| Total |
91 |
|
4 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_ARGS_H
#define _LINUX_ARGS_H
/*
* How do these macros work?
*
* In __COUNT_ARGS() _0 to _12 are just placeholders from the start
* in order to make sure _n is positioned over the correct number
* from 12 to 0 (depending on X, which is a variadic argument list).
* They serve no purpose other than occupying a position. Since each
* macro parameter must have a distinct identifier, those identifiers
* are as good as any.
*
* In COUNT_ARGS() we use actual integers, so __COUNT_ARGS() returns
* that as _n.
*/
/* This counts to 15. Any more, it will return 16th argument. */
#define __COUNT_ARGS(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _n, X...) _n
#define COUNT_ARGS(X...) __COUNT_ARGS(, ##X, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
/* Concatenate two parameters, but allow them to be expanded beforehand. */
#ifndef __CONCAT
#define __CONCAT(a, b) a ## b
#endif
#ifndef CONCATENATE
#define CONCATENATE(a, b) __CONCAT(a, b)
#endif
#endif /* _LINUX_ARGS_H */