binary operations

[JohnJH]

How do i perform binary operations, such as addition, subtraction, multiplication and division..

[Fransje]

http://www.cprogramming.com/tutorial/bitwise_operators.html

[JohnJH]

I am kinda confused on how the binary division is performed.
Because it gets shifted if the first bit is equal to 0..

I tried to xor the divisor and dividend, and test the first bit each time, to see if it need to be shifted, but it just gives me and incorrect result..