Function core::intrinsics::ctlz_nonzero[][src]

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

intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library

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

此内联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