Hi Michael,

Okay, it's time to show how weak I am at C. What does the -= operator do, or is it just a typo? Also, I do not understand the line

z = a > b;

What does that line do?

I have rewritten the line

b = (z * a + !z * b) - (z * b + !z * a);

to read

b = (z - !z) * (a - b);

Using the difference of a value and its compliment as a coefficient is interesting.