Function stddev

src/data_handler/inc/common_data_handler_helpers.h:26–37

}

inline double stddev (double data[], int len)
{
    double the_mean = mean (data, len);
    double deviation = 0.0;

    for (int i = 0; i < len; ++i)
    {
        deviation += pow (data[i] - the_mean, 2);
    }

    return sqrt (deviation / len);
}


// Reverses the drection of an array of doubles.