/// <summary> /// calc stddev /// </summary> /// <param name="data"></param> /// <param name="start_pos"></param> /// /// <param name="end_pos"></param> /// <returns>stddev</returns> public static double calc_stddev(double[] data, int start_pos, int end_pos) { double[] output = new double[1]; int res = DataHandlerLibrary.calc_stddev(data, start_pos, end_pos, output); if (res != (int)CustomExitCodes.STATUS_OK) { throw new BrainFlowException(res); } return(output[0]); }