diff options
| -rw-r--r-- | include/string.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/string.h b/include/string.h index dcdd24fb0..7d284e5d6 100644 --- a/include/string.h +++ b/include/string.h @@ -66,6 +66,10 @@ extern __ptr_t memmove __P ((__ptr_t __dest, __const __ptr_t __src, #define index strchr #define rindex strrchr +/* Return the position of the first bit set in I, or 0 if none are set. + The least-significant bit is position 1, the most-significant 32. */ +extern int ffs __P ((int __i)) __attribute__ ((const)); + /* Other common BSD functions */ /* Set N bytes of S to 0. */ extern void bzero __P ((__ptr_t __s, size_t __n)); |