Linear.Projection:perspective from linear-1.19.1.3, B

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\[\frac{\left(x \cdot 2\right) \cdot y}{x - y} \]
(FPCore (x y) :precision binary64 (/ (* (* x 2.0) y) (- x y)))
double code(double x, double y) {
	return ((x * 2.0) * y) / (x - y);
}

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = ((x * 2.0d0) * y) / (x - y)
end function

public static double code(double x, double y) {
	return ((x * 2.0) * y) / (x - y);
}

def code(x, y):
	return ((x * 2.0) * y) / (x - y)

function code(x, y)
	return Float64(Float64(Float64(x * 2.0) * y) / Float64(x - y))
end

function tmp = code(x, y)
	tmp = ((x * 2.0) * y) / (x - y);
end

code[x_, y_] := N[(N[(N[(x * 2.0), $MachinePrecision] * y), $MachinePrecision] / N[(x - y), $MachinePrecision]), $MachinePrecision]

\frac{\left(x \cdot 2\right) \cdot y}{x - y}