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| author | Dominik Sliwa <dominik.sliwa@toradex.com> | 2019-03-04 12:01:54 +0100 |
|---|---|---|
| committer | Dominik Sliwa <dominik.sliwa@toradex.com> | 2019-03-04 12:01:54 +0100 |
| commit | 348fa3f6871f56a37dcd16c99ca98118c6d79a38 (patch) | |
| tree | 6fcae7785bae4ffb838fd6549f7d01ba6abf0763 /backport-include/backport/magic.h | |
Backports v4.19.24
Backports generated by toradex backports 515a1fa55cda2b1d952872e1786857481bd54fcc
against mainline kernel tag v4.19.24
Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>
Diffstat (limited to 'backport-include/backport/magic.h')
| -rw-r--r-- | backport-include/backport/magic.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/backport-include/backport/magic.h b/backport-include/backport/magic.h new file mode 100644 index 0000000..d7e7cc9 --- /dev/null +++ b/backport-include/backport/magic.h @@ -0,0 +1,16 @@ +/* + * These tricks are taken from + * http://efesx.com/2010/07/17/variadic-macro-to-count-number-of-arguments/ + * and + * http://efesx.com/2010/08/31/overloading-macros/ + */ + +#define VA_NUM_ARGS(...) VA_NUM_ARGS_IMPL(__VA_ARGS__, 6,5,4,3,2,1) +#define VA_NUM_ARGS_IMPL(_1,_2,_3,_4,_5,_6,N,...) N + +#define macro_dispatcher(func, ...) \ + macro_dispatcher_(func, VA_NUM_ARGS(__VA_ARGS__)) +#define macro_dispatcher_(func, nargs) \ + macro_dispatcher__(func, nargs) +#define macro_dispatcher__(func, nargs) \ + func ## nargs |