Function bit_lowest_set_mask_u64
pub fn bit_lowest_set_mask_u64(a: u64) -> u64Available on crate feature
dep_safe_arch only.Expand description
Gets the mask of all bits up to and including the lowest set bit in a u64.
If the input is 0, you get u64::MAX
-
Formula:
(a - 1) ^ a -
Intrinsic:
_blsmsk_u64 -
Assembly:
blsmsk r64, r64