Bitwise value switching

Original Post

Nov 22, 2004 at 4:34 PM

I once heard of a method to switch 2 variables without using a third variable using only 2 bitwise XOR statements. Is anyone familiar with this?

Nov 22, 2004 at 4:46 PM

I'm not familiar with doing it in 2 XOR statements, but 3...

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

-Mezz

Mod

473

Nov 22, 2004 at 4:51 PM

You might also want to look into these threads:

Bitwise XOR vx. Temp variable question
XOR operator performs what operation?