update() [1/2]

template<typename T, fl::size N = 0>

T fl::detail::AlphaTrimmedMeanImpl< T, N >::update ( fl::span< const T > values )

inline

Definition at line 20 of file alpha_trimmed_mean_impl.h.

                                     {
        if (values.size() == 0) return mLastValue;
        for (fl::size i = 0; i < values.size(); ++i) {
            mRing.push_back(values[i]);
        }
        // Rebuild sorted array from ring contents
        mSortedCount = mRing.size();
        for (fl::size i = 0; i < mSortedCount; ++i) {
            mSorted[i] = mRing[i];
        }
        fl::sort(&mSorted[0], &mSorted[0] + mSortedCount);
        // Compute trimmed mean
        fl::size lo = mTrimCount;
        fl::size hi = (mSortedCount > mTrimCount) ? mSortedCount - mTrimCount : 0;
        if (lo >= hi) {
            mLastValue = mSorted[mSortedCount / 2];
        } else {
            T sum = T(0);
            for (fl::size i = lo; i < hi; ++i) {
                sum = sum + mSorted[i];
            }
            mLastValue = div_by_count(sum, hi - lo);
        }
        return mLastValue;
    }

References fl::detail::div_by_count(), mLastValue, mRing, mSorted, mSortedCount, mTrimCount, fl::span< T, Extent >::size(), and fl::sort().

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