Max Function using only + - / abs

Someone bet me you could make a Max(a,b) function using only the 4 operators +, -, divide and absolute value.
I came up with

int max(a,b){
      return ((a>=b)*a + (a<b)*b);
}

But I cannot use comparators.
LVL 13
RyanProject Engineer, ElectricalAsked:
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ozoCommented:
(a+b+abs(a-b))/2
0

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RyanProject Engineer, ElectricalAuthor Commented:
Wow. How did you solve that?
I seriously just spent an hour trying to figure it out.
0
ozoCommented:
abs is like max(a,-a)
0
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