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/*
* Copyright © 2004-2011 Ondra Kamenik
* Copyright © 2019 Dynare Team
*
* This file is part of Dynare.
*
* Dynare is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Dynare is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Dynare. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef BLOCK_DIAGONAL_H
#define BLOCK_DIAGONAL_H
#include <memory>
#include <vector>
#include "QuasiTriangular.hh"
class BlockDiagonal : public QuasiTriangular
{
std::vector<int> row_len, col_len;
public:
BlockDiagonal(ConstVector d, int d_size);
BlockDiagonal(const BlockDiagonal &b) = default;
explicit BlockDiagonal(const QuasiTriangular &t);
BlockDiagonal &operator=(const QuasiTriangular &t)
{
GeneralMatrix::operator=(t);
return *this;
}
BlockDiagonal &operator=(const BlockDiagonal &b) = default;
~BlockDiagonal() override = default;
void setZeroBlockEdge(diag_iter edge);
int getNumZeros() const;
int getNumBlocks() const;
int getLargestBlock() const;
void printInfo() const;
void multKron(KronVector &x) const override;
void multKronTrans(KronVector &x) const override;
const_col_iter col_begin(const DiagonalBlock &b) const override;
col_iter col_begin(const DiagonalBlock &b) override;
const_row_iter row_end(const DiagonalBlock &b) const override;
row_iter row_end(const DiagonalBlock &b) override;
std::unique_ptr<QuasiTriangular>
clone() const override
{
return std::make_unique<BlockDiagonal>(*this);
}
private:
void setZerosToRU(diag_iter edge);
const_diag_iter findBlockStart(const_diag_iter from) const;
static void savePartOfX(int si, int ei, const KronVector &x, Vector &work);
void multKronBlock(const_diag_iter start, const_diag_iter end,
KronVector &x, Vector &work) const;
void multKronBlockTrans(const_diag_iter start, const_diag_iter end,
KronVector &x, Vector &work) const;
};
#endif /* BLOCK_DIAGONAL_H */
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