diff options
Diffstat (limited to 'include/util.h')
| -rw-r--r-- | include/util.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/util.h b/include/util.h index e952123e37..c012470a47 100644 --- a/include/util.h +++ b/include/util.h @@ -56,6 +56,9 @@ #define NULL ((void *)0) #endif +/* True of x is a power of two */ +#define POWER_OF_TWO(x) (x && !(x & (x - 1))) + /** * macros for integer division with various rounding variants * default integer division rounds down. |