3.118. __nv_ffsll
Prototype:
i32 @__nv_ffsll(i64 %x)
Description:
Find the position of the first (least significant) bit set to 1 in x, where the least significant bit position is 1.
Returns:
Returns a value between 0 and 64 inclusive representing the position of the first bit set.
-
__nv_ffsll(0) returns 0.
Library Availability:
Compute 2.0: Yes
Compute 3.0: Yes
Compute 3.5: Yes