The issue I am encountered with is… the same vector we read as double is to be used in another function, but with different data type as mentioned bellow. So I need a conversion function which performs this fact.

I have a class as follows

I have a vector defined as follows

I have a another class having a function svdfit() and this function takes a argument (vector) with datatype from the class NRVec.

The problem arises when I have my own vectors with type

Now instead of using Vec_I_DP, I want to use my vector Vec_XX_AT. The problem is difference in the datatype. So I wanted to have a conversion function which converts vector from datatype Vec_I_DP(Vec_I_DP &x) to DP(vector <DP> Vect_XX_AT) as shown above.

How to do it??

Merci

I have a class as follows

*template <class T>*

class NRVec {

private:

int nn; // size of array. upper index is nn-1

T *v;

public:

NRVec();

explicit NRVec(int n); // Zero-based array

NRVec(const T &a, int n); //initialize to constant value

NRVec(const T *a, int n); // Initialize to array

inline const T & operator[](const int i) const;

inline int size() const;

~NRVec();

};class NRVec {

private:

int nn; // size of array. upper index is nn-1

T *v;

public:

NRVec();

explicit NRVec(int n); // Zero-based array

NRVec(const T &a, int n); //initialize to constant value

NRVec(const T *a, int n); // Initialize to array

inline const T & operator[](const int i) const;

inline int size() const;

~NRVec();

};

I have a vector defined as follows

*typedef const NRVec<DP> Vec_I_DP;*I have a another class having a function svdfit() and this function takes a argument (vector) with datatype from the class NRVec.

*void AutoCompensation::svdfit(Vec_I_DP &x, Vec_I_DP &y)*The problem arises when I have my own vectors with type

*typedef double DP;*

vector <DP> v,Vect_XX_AT, Vect_YY_AT;vector <DP> v,Vect_XX_AT, Vect_YY_AT;

Now instead of using Vec_I_DP, I want to use my vector Vec_XX_AT. The problem is difference in the datatype. So I wanted to have a conversion function which converts vector from datatype Vec_I_DP(Vec_I_DP &x) to DP(vector <DP> Vect_XX_AT) as shown above.

How to do it??

Merci