Sum of two numbers with bitwise operator

Question

I am pasting the code to find the sum of two numbers with bitwise operator. Please suggest if it can be optimized. Thanks...

public static int getSum(int p, int          


        

Answer 1

I think that the optimizations should be in the field of readability, rather than performance (which will probably be handled by the compiler).

Use for loop instead of while

The idiom for (int i=0; i<32; i++) is more readable than the while loop if you know the number of iterations in advance.

Divide the numbers by two

Dividing the numbers by two and getting the modulu:

n1 = p % 2;
p  /= 2;

Is perhaps more readable than:

(p & (1<<(i-1)))>>(i-1);