diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/int_sqrt.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/lib/int_sqrt.c b/lib/int_sqrt.c index 036c96781ea8..67bb300b5b46 100644 --- a/lib/int_sqrt.c +++ b/lib/int_sqrt.c @@ -8,6 +8,7 @@ #include <linux/kernel.h> #include <linux/export.h> +#include <linux/bitops.h> /** * int_sqrt - rough approximation to sqrt @@ -22,10 +23,7 @@ unsigned long int_sqrt(unsigned long x) if (x <= 1) return x; - m = 1UL << (BITS_PER_LONG - 2); - while (m > x) - m >>= 2; - + m = 1UL << (__fls(x) & ~1UL); while (m != 0) { b = y + m; y >>= 1; |