Numeric.Log:$clog1p from log-domain-0.10.2.1, B

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\[\frac{x}{1 + \sqrt{x + 1}} \]
(FPCore (x) :precision binary64 (/ x (+ 1.0 (sqrt (+ x 1.0)))))
double code(double x) {
	return x / (1.0 + sqrt((x + 1.0)));
}

real(8) function code(x)
    real(8), intent (in) :: x
    code = x / (1.0d0 + sqrt((x + 1.0d0)))
end function

public static double code(double x) {
	return x / (1.0 + Math.sqrt((x + 1.0)));
}

def code(x):
	return x / (1.0 + math.sqrt((x + 1.0)))

function code(x)
	return Float64(x / Float64(1.0 + sqrt(Float64(x + 1.0))))
end

function tmp = code(x)
	tmp = x / (1.0 + sqrt((x + 1.0)));
end

code[x_] := N[(x / N[(1.0 + N[Sqrt[N[(x + 1.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

\frac{x}{1 + \sqrt{x + 1}}