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#ifndef DIFFERENTIATION_TOOLS_HPP
#define DIFFERENTIATION_TOOLS_HPP 1

#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include <string>
#include "constants.hpp"

void differentiation_vector(
        std::vector<double> & diff_array, 
        const double delta, 
        const int index,
        const int order_of_deriv = 1,
        const int diff_ord = constants::DiffOrd);



void non_uniform_diff_vector(
        std::vector<double> & diff_array,
        const std::vector<double> & grid,
        const int Iref,
        const int LB,
        const int UB,
        const int diff_ord = constants::DiffOrd);


void spher_derivative_at_point(
        const std::vector<double*> & deriv_vals,
        const std::vector<const std::vector<double>*> & fields,
        const std::vector<double> & grid,
        const std::string & dim,
        const int Itime, const int Idepth, const int Ilat, const int Ilon,
        const int Ntime, const int Ndepth, const int Nlat, const int Nlon,
        const std::vector<bool> & mask,
        const int order_of_deriv = 1,
        const int diff_ord = constants::DiffOrd);



void Cart_derivatives_at_point(
        const std::vector<double*> & x_deriv_vals,
        const std::vector<double*> & y_deriv_vals,
        const std::vector<double*> & z_deriv_vals,
        const std::vector<const std::vector<double>*> & fields,
        const std::vector<double> & latitude, 
        const std::vector<double> & longitude,
        const int Itime, const int Idepth, const int Ilat, const int Ilon,
        const int Ntime, const int Ndepth, const int Nlat, const int Nlon,
        const std::vector<bool> & mask,
        const int order_of_deriv = 1,
        const int diff_ord = constants::DiffOrd);



void get_diff_vector(
        std::vector<double> & diff_vector,
        int & LB_ret,
        const std::vector<double> & grid,
        const std::string & dim,
        const int Itime,
        const int Idepth,
        const int Ilat,
        const int Ilon,
        const int Ntime,
        const int Ndepth,
        const int Nlat,
        const int Nlon,
        const std::vector<bool> & mask,
        const int order_of_deriv,
        const int diff_ord = constants::DiffOrd
        );

#endif