python中的零填充右移 [英] Zero fill right shift in python

问题描述

function(e, t) {
    return e << t | e >>> 32 - t
}

我在js中有此方法，我对移位操作不甚了解.我想用python编写.如何使用python写等效代码，因为它不像JS中那样支持零填充右移运算符 >>>.

I have this method in js, I do not understand in deep about shift operation. I want to write that in python. How can I write the equivalent code in python as it does not support Zero Fill Right Shift Operator as in JS >>>.

推荐答案

Python中没有内置的零填充右移运算符，但是您可以轻松定义自己的zero_fill_right_shift函数:

There is not a built-in zero fill right shift operator in Python, but you can easily define your own zero_fill_right_shift function:

def zero_fill_right_shift(val, n):
    return (val >> n) if val >= 0 else ((val + 0x100000000) >> n)

然后您可以定义函数:

def f(e, t):
    return e << t or zero_fill_right_shift(e, 32 - t)

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