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

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

double code(double x) {
	return sqrt((x + 1.0)) - 1.0;
}

double code(double x) {
	return x * (1.0 / (1.0 + sqrt((x + 1.0))));
}

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

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

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

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

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

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

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

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

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

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

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

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

\sqrt{x + 1} - 1

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