Problem with Bitwise Barrel Shift Rotate left and right in C#

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逝去的感伤
逝去的感伤 2021-01-23 02:31

In C++ I have code like this.

    static UInt32 rol(UInt32 value, UInt32 bits)
    {
        bits &= 31;
        return ((value << bits) | (value >&         


        
3条回答
  •  梦谈多话
    2021-01-23 03:08

    You will have to cast the right side of the bitshift operator to int. If you cast like (int)(32 - bits), it should not affect your intended purpose. The right side is just expecting an int, probably because it's simpler that way and highly unlikely you'll ever want to shift more than 2 billion bits.

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