Exception for ab-angle->ABCF D

Specification

\[\begin{array}{l} \\ -\left(\left(a \cdot a\right) \cdot b\right) \cdot b \end{array} \]

(FPCore (a b) :precision binary64 (- (* (* (* a a) b) b)))

double code(double a, double b) {
	return -(((a * a) * b) * b);
}

real(8) function code(a, b)
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    code = -(((a * a) * b) * b)
end function

public static double code(double a, double b) {
	return -(((a * a) * b) * b);
}

def code(a, b):
	return -(((a * a) * b) * b)

function code(a, b)
	return Float64(-Float64(Float64(Float64(a * a) * b) * b))
end

function tmp = code(a, b)
	tmp = -(((a * a) * b) * b);
end

code[a_, b_] := (-N[(N[(N[(a * a), $MachinePrecision] * b), $MachinePrecision] * b), $MachinePrecision])

\begin{array}{l}

\\
-\left(\left(a \cdot a\right) \cdot b\right) \cdot b
\end{array}