diff options
Diffstat (limited to 'string/ffsll.c')
| -rw-r--r-- | string/ffsll.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/string/ffsll.c b/string/ffsll.c index 7d16250..0ec39a0 100644 --- a/string/ffsll.c +++ b/string/ffsll.c @@ -18,20 +18,26 @@ #include <limits.h> #define ffsl __something_else #include <string.h> - #undef ffsll +#include <math-use-builtins.h> +#include <libc-diag.h> /* Find the first bit set in I. */ int -ffsll (long long int i) +__ffsll (long long int i) { +#if USE_FFSLL_BUILTIN + return __builtin_ffsll (i); +#else unsigned long long int x = i & -i; if (x <= 0xffffffff) return ffs (i); else return 32 + ffs (i >> 32); +#endif } +weak_alias (__ffsll, ffsll) #if ULONG_MAX != UINT_MAX #undef ffsl |