public static extern unsafe int bladerf_get_sampling(IntPtr dev, out bladerf_sampling sampling);
 public static extern int bladerf_set_sampling(IntPtr dev, bladerf_sampling sampling);
 public static extern int bladerf_set_sampling(IntPtr dev, bladerf_sampling sampling);
 public static unsafe extern int bladerf_get_sampling(IntPtr dev, out bladerf_sampling sampling);