What does this c# bitshifting method do?

Question

This method is pretty much copied from a java program, but I have worries it doesn't work as intended in c# if ID is a byte, what does this do?

public int getBit(int position)
    {
        return (ID >> (position - 1)) & 1;
    }

http://stackoverflow.com/questions/141525/absolute-beginners-guide-to-bit-shifting/141873#141873 — Prix, May 26 '12 at 19:47

Steve · Accepted Answer · 2012-05-26T20:15:09.640

1

Extract from the ID the bit at the position passed.
Position should be 1-8
Returns the bit value (0-1)

For example:

ID = 128;  // 10000000
getBit(8); // returns 1

ID = 127;  // 01111111
getBit(8); // returns 0

edited May 26 '12 at 20:15

answered May 26 '12 at 19:46

Steve

score 1 · Answer 2 · answered May 26 '12 at 19:47

1

Returns non-zero if the bit at (position-1) is 1, otherwise returns 0

answered May 26 '12 at 19:47

spender

2 Answers2