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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

\sqrt{x + 1} - \sqrt{x}

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