How do I create an operator in Haskell?

Question

Making a ternary logic table, and I would like to make my own function for an operator that I\'ll call <=>.

So, for example, I want to do this, but

Answer 1

You can simplify (line-wise) the definition as follows:

(<=>) :: Ternary -> Ternary -> Ternary
T <=> T = T
F <=> F = T
M <=> M = T
M <=> _ = M
_ <=> M = M
_ <=> _ = F