Exception for sqrt E (should all be same)

Specification

\[\begin{array}{l} \\ \sqrt{{x}^{2} + {x}^{2}} \end{array} \]

(FPCore (x) :precision binary64 (sqrt (+ (pow x 2.0) (pow x 2.0))))

double code(double x) {
	return sqrt((pow(x, 2.0) + pow(x, 2.0)));
}

real(8) function code(x)
    real(8), intent (in) :: x
    code = sqrt(((x ** 2.0d0) + (x ** 2.0d0)))
end function

public static double code(double x) {
	return Math.sqrt((Math.pow(x, 2.0) + Math.pow(x, 2.0)));
}

def code(x):
	return math.sqrt((math.pow(x, 2.0) + math.pow(x, 2.0)))

function code(x)
	return sqrt(Float64((x ^ 2.0) + (x ^ 2.0)))
end

function tmp = code(x)
	tmp = sqrt(((x ^ 2.0) + (x ^ 2.0)));
end

code[x_] := N[Sqrt[N[(N[Power[x, 2.0], $MachinePrecision] + N[Power[x, 2.0], $MachinePrecision]), $MachinePrecision]], $MachinePrecision]

\begin{array}{l}

\\
\sqrt{{x}^{2} + {x}^{2}}
\end{array}