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| author | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-09-13 20:39:58 -0400 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-09-13 20:39:58 -0400 |
| commit | b3ec0a0674f4e499bcb6d2469acdf9d2d574c3d6 (patch) | |
| tree | 374687545d464bb1e57991cf73b654a7fa0b83ba /src/basic/macro.h | |
| parent | f6e7ffdf3fe8e3ed5e659f747946461350ade5a8 (diff) | |
| parent | ae8150ecbd54765622aadf288100440d71a10ccd (diff) | |
Merge tag 'systemd/v231-1.parabola1' into systemd/parabola
Diffstat (limited to 'src/basic/macro.h')
| -rw-r--r-- | src/basic/macro.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/basic/macro.h b/src/basic/macro.h index e41aa4260f..6b2aeb933f 100644 --- a/src/basic/macro.h +++ b/src/basic/macro.h @@ -89,6 +89,15 @@ #define UNIQ_T(x, uniq) CONCATENATE(__unique_prefix_, CONCATENATE(x, uniq)) #define UNIQ __COUNTER__ +/* builtins */ +#if __SIZEOF_INT__ == 4 +#define BUILTIN_FFS_U32(x) __builtin_ffs(x); +#elif __SIZEOF_LONG__ == 4 +#define BUILTIN_FFS_U32(x) __builtin_ffsl(x); +#else +#error "neither int nor long are four bytes long?!?" +#endif + /* Rounds up */ #define ALIGN4(l) (((l) + 3) & ~3) |