diff options
Diffstat (limited to 'longlong.h')
| -rw-r--r-- | longlong.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/longlong.h b/longlong.h index d31198467..fdff795dd 100644 --- a/longlong.h +++ b/longlong.h @@ -1395,6 +1395,16 @@ extern UWtype __MPN(udiv_qrnnd) _PROTO ((UWtype *, UWtype, UWtype, UWtype)); __asm__ ("ediv %3,%2,%0,%1" \ : "=g" (q), "=g" (r) : "g" (__x.__ll), "g" (d)); \ } while (0) +#if 0 +/* FIXME: This instruction appears to be unimplemented on some systems (vax + 8800 maybe). */ +#define count_trailing_zeros(count,x) \ + do { \ + __asm__ ("ffs 0, 31, %1, %0" \ + : "=g" ((USItype) (count)) \ + : "g" ((USItype) (x))); \ + } while (0) +#endif #endif /* __vax__ */ #if defined (__z8000__) && W_TYPE_SIZE == 16 |