Vector3D.SqrMagnitude C# (CSharp) Метод

    public static double SqrMagnitude(Vector3D a)
    {
        return a.x * a.x + a.y * a.y + a.z * a.z;
    }

 public static bool operator !=(Vector3D lhs, Vector3D rhs)
 {
     return((double)Vector3D.SqrMagnitude(lhs - rhs) >= 0.0 / 1.0);
 }