Function core::arch::x86_64::_tzcnt_u64

1.27.0 · source · [−]

pub unsafe fn _tzcnt_u64(x: u64) -> u64

Available on x86-64 and target feature bmi1 only.

Expand description

Counts the number of trailing least significant zero bits.

When the source operand is 0, it returns its size in bits.