Function core::intrinsics::ctlz_nonzero

const: 1.50.0 · source ·
pub const unsafe extern "rust-intrinsic" fn ctlz_nonzero<T: Copy>(
    x: T
) -> T
🔬This is a nightly-only experimental API. (core_intrinsics)
Expand description

类似于 ctlz,但是非常不安全,因为当给定值 0x 时,它返回 undef

此内部函数没有稳定的对应对象。

Examples

#![feature(core_intrinsics)]

use std::intrinsics::ctlz_nonzero;

let x = 0b0001_1100_u8;
let num_leading = unsafe { ctlz_nonzero(x) };
assert_eq!(num_leading, 3);
Run