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Xor swap algorithm/C code

C Code to implement XOR swap of x and y:

x ^= y; y ^= x; x ^= y;

If you want to use this a lot, it is probably best set up as a compiler macro:

define xorSwap(x,y) {x=x^y; y=x^y; x=x^y;}

The function declaration would look like:

void xorSwap(int * x, int * y) {

  *x = *x ^ *y;
  *y = *x ^ *y;
  *x = *x ^ *y;

}

See: Xor swap algorithm

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