Function stdev

libCacheSim/traceAnalyzer/utils/include/utilsMath.h:58–72

template<typename T>
static inline T stdev(const std::vector<T> &v, size_t ignore_n_first, size_t ignore_n_last) {
    if (v.size() <= 1) {
        return (T) 0.0;
    }
    if (v.size() <= ignore_n_first + ignore_n_last) {
        return 0;
    }

    T mean_ = mean(v, ignore_n_first, ignore_n_last);
    T sum = (T) 0.0;
    for (auto it = v.begin() + ignore_n_first; it != v.end() - ignore_n_last; it++) {
        sum += (*it - mean_) * (*it - mean_);
    }
    return (T) sqrt(sum / (v.size() - ignore_n_first - ignore_n_last));
}

}// namespace mathUtils