Determine which single bit in the byte is set

Question

I have a byte I\'m using for bitflags. I know that one and only one bit in the byte is set at any give time.

Ex:

Answer 1

unsigned getSetBitLocation(unsigned char b) {
  unsigned pos=0;
  pos = (b & 0xf0) ? 4 : 0; b |= b >>4;
  pos += (b & 0xc) ? 2 : 0; b |= b >>2;
  pos += (b & 0x2) ? 1 : 0; 
  return pos; 
}

It would be hard to do it jumpfree. Maybe with the Bruin sequences ?