amg_mkb/lad_petsc/ResidualBasedErrorEvaluator.hpp

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/*
 * ResidualBasedErrorEvaluator.hpp
 *
 *  Created on: Aug 25, 2015
 *      Author: damian
 */

#ifndef SRC_AMG_MKB_LAD_PETSC_RESIDUALBASEDERROREVALUATOR_HPP_
#define SRC_AMG_MKB_LAD_PETSC_RESIDUALBASEDERROREVALUATOR_HPP_

#include <petscmat.h>
#include <petscvec.h>
#include "ErrorEvaluator.hpp"

class ResidualBasedErrorEvaluator : public ErrorEvaluator{
public:
    ResidualBasedErrorEvaluator(Mat mat, Vec rhs, double difference_threshold, double exact_solution_threshold, int size, int max_iterations);
    virtual ~ResidualBasedErrorEvaluator();
    virtual bool Stop(Vec x, int iteration_nr);
private:
    Vec residual;
    Mat mat;
    Vec rhs;
    double difference_threshold;
    double previous_residual;
    double exact_solution_threshold;
    bool first_iteration;
    int max_iterations;
};

#endif /* SRC_AMG_MKB_LAD_PETSC_RESIDUALBASEDERROREVALUATOR_HPP_ */

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