atan Mul Add -1.00067115040168 Mul sec Pow 4 x3 -2 x0 
Mul Add -1.00067115040168 Mul sec Pow 4 x3 -2 Pow Add 1 Mul Mul Add -1.00067115040168 Mul sec Pow 4 x3 -2 x0 Mul Add -1.00067115040168 Mul sec Pow 4 x3 -2 x0 -1 