我要寻找一个int32-> INT32功能是

I am looking for a int32->int32 function that is

推荐答案

乘以一个大奇数和异或具有不同的功能。

Multiply by a large odd number and xor with a different one.

双射：奇数有两个乘法逆模的力量，因此乘法被乘以逆撤消。和XOR，当然，另一个异或撤消。

Bijection: odd numbers have a multiplicative inverse modulo powers of two, so the multiplication is undone by a multiplication by the inverse. And xor is, of course, undone by another xor.

这基本上是如何线性同余伪随机数生成器的工作原理。

This is basically how the linear congruence pseudo random number generator works.