Rust NonZeroI128.unchecked_mul用法及代碼示例

用法

pub const unsafe fn unchecked_mul(self, other: NonZeroI128) -> NonZeroI128

將兩個非零整數相乘，假設不會發生溢出。溢出是未檢查的，溢出是未定義的行為即使結果將換行為非零值。該行為一旦定義為未定義self * rhs > i128::MAX， 或者self * rhs < i128::MIN.

例子

#![feature(nonzero_ops)]

let two = NonZeroI128::new(2)?;
let four = NonZeroI128::new(4)?;

assert_eq!(four, unsafe { two.unchecked_mul(two) });