/// <summary>
/// Spherical Bessel function of the second kind, y(v, z).
/// <p/>
/// If expScaled is true, returns Exp(-Abs(y)) * y(v, z) where y = z.Imaginary.
/// </summary>
/// <param name="v">The order of the spherical Bessel function</param>
/// <param name="z">The value to compute the spherical Bessel function of.</param>
/// <param name="expScaled">If true, returns exponentially-scaled spherical Bessel function</param>
/// <returns></returns>
public static Complex SphericalBesselY(double v, Complex z, bool expScaled = false)
{
const double rthpi = 1.2533141373155002512; //sqrt(pi/2)
return(rthpi * BesselY(v + 0.5, z, expScaled) / Complex.Sqrt(z));
}
