Function core::arch::aarch64::_cls_u64[][src]

pub unsafe fn _cls_u64(x: u64) -> u64
🔬 This is a nightly-only experimental API. (stdsimd #48556)
This is supported on AArch64 only.
Expand description

计算前导最高有效位集。

设置操作数的所有位后,它将返回操作数的大小 (以位为单位)。