diff options
| -rw-r--r-- | sys/sys/param.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/sys/param.h b/sys/sys/param.h index b8ac444..d1bb660 100644 --- a/sys/sys/param.h +++ b/sys/sys/param.h @@ -275,6 +275,7 @@ #endif #define nitems(x) (sizeof((x)) / sizeof((x)[0])) #define rounddown(x, y) (((x)/(y))*(y)) +#define rounddown2(x, y) ((x)&(~((y)-1))) /* if y is power of two */ #define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) /* to any y */ #define roundup2(x, y) (((x)+((y)-1))&(~((y)-1))) /* if y is powers of two */ #define powerof2(x) ((((x)-1)&(x))==0) |
