Function core::arch::x86_64::_mm_tzcnt_641.27.0[−][src]

pub unsafe fn _mm_tzcnt_64(x: u64) -> i64

This is supported on x86-64 and target feature bmi1 only.

Expand description

计算尾随的最低有效零位的数量。

当源操作数为 0 时，它将返回其大小 (以位为单位)。