(FPCore (x) :precision binary64 (- (sqrt (+ 1.0 x)) 1.0))

(FPCore (x) :precision binary64 (/ x (+ 1.0 (sqrt (+ x 1.0)))))

double code(double x) {
	return sqrt((1.0 + 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 = sqrt((1.0d0 + x)) - 1.0d0
end function

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 Math.sqrt((1.0 + x)) - 1.0;
}

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

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

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

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

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

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

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

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

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

\sqrt{1 + x} - 1

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