C# bitwise operator vs Javascript bitwise operator

Question

I am not familiar with bitwise operator. I have these code:

var value= -2145643504;
value = (value << 1) | (value >> 27);
//result: -16

Both C# and JavaScript result the same -16 But in JavaScript there is another operator >>> which C# has not. Code in JavaScript:

 var value= -2145643504;
 value = (value << 1) | (value >>> 27);
 //result: 3680304    //wanted result in C#

Any solutions to get it in C#?

Possible duplicate of What is the C# equivalent of Java unsigned right shift operator >>> Although this is specifically for Java this is the same for JavaScript — abc123
– abc123, Commented Jan 28, 2017 at 7:55

Community · Accepted Answer · 2017-05-23 11:53:09Z

4

In JavaScript you are doing a Unsigned right shift assignment with >>>.

To duplicate this in C# you will need to use >> but you must first cast the int.

int x = -100;
int y = (int)((uint)x >> 2);
Console.WriteLine(y);

edited May 23, 2017 at 11:53

CommunityBot

11 silver badge

answered Jan 28, 2017 at 7:58

abc123

19k7 gold badges55 silver badges84 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

user7838288 Over a year ago

I'm converting kindof hashing mechanism from JavaScript to C# with zero experience of C# and this helped me so damn much! Thank you!

Johan Shen · Accepted Answer · 2017-01-28 08:06:37Z

1

            var value = -2145643504;
            value = (value << 1) | rightMove(value , 27);
            //value = 3680304

        int rightMove(int value, int pos)
        {
            if (pos != 0)
            {
                int mask = 0x7fffffff;
                value >>= 1;
                value &= mask;
                value >>= pos - 1;
            }
            return value;
        }

answered Jan 28, 2017 at 8:06

Johan Shen

1686 bronze badges

Collectives™ on Stack Overflow

C# bitwise operator vs Javascript bitwise operator

2 Answers 2

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related