/// <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]);
}