#pragma once

class Data_collation {
    private:
        double delta_t_;
        double buffer_[4];
        size_t index_[4];
        double running_sum_;
        double partial_sum_;
        bool even_;

    public:
        Data_collection( double dt );
        void store_datum( double x );
        double derivative() const;
        double second_derivative() const;
        double integral() const;
};