SparseMatrixUnknownPattern.h

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// 
//  This file is part of the FFEA simulation package
//  
//  Copyright (c) by the Theory and Development FFEA teams,
//  as they appear in the README.md file. 
// 
//  FFEA is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
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//  GNU General Public License for more details.
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#ifndef SPARSEMATRIXUNKNOWNPATTERN_H_INCLUDED
#define SPARSEMATRIXUNKNOWNPATTERN_H_INCLUDED

#include <vector>

#include "mat_vec_types.h"
#include "SparseMatrixTypes.h"
#include "FFEA_return_codes.h"

using namespace std;

class SparseMatrixUnknownPattern {
public:
    SparseMatrixUnknownPattern();

    ~SparseMatrixUnknownPattern();

    int init(int num_rows, int suggested_initial_size_for_row_vectors);

    void add_off_diagonal_element(int row_index, int column_index, scalar val);

    void set_diagonal_element(int row_index, scalar val);

    void calc_inverse_diagonal(scalar *inv_D);

    void zero();

    void apply(scalar *in, scalar *result);

    void print();

private:
    int num_rows;
    vector<sparse_entry> *row;
    scalar *diagonal;
};

#endif