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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | // Gmsh - Copyright (C) 1997-2015 C. Geuzaine, J.-F. Remacle
//
// See the LICENSE.txt file for license information. Please report all
// bugs and problems to the public mailing list <gmsh@geuz.org>.
#ifndef _LINEAR_SYSTEM_H_
#define _LINEAR_SYSTEM_H_
#include <map>
#include <string>
// A class that encapsulates a linear system solver interface :
// building a sparse matrix, solving a linear system
class linearSystemBase {
protected:
std::map<std::string, std::string> _parameters;
public :
virtual ~linearSystemBase(){}
virtual bool isAllocated() const = 0;
virtual void allocate(int nbRows) = 0;
virtual void preAllocateEntries(){};
virtual void clear() = 0;
virtual void zeroMatrix() = 0;
virtual void zeroRightHandSide() = 0;
virtual void zeroSolution() = 0;
virtual int systemSolve() = 0;
// x = A*b
virtual int matMult() { return 0; }
void setParameter (std::string key, std::string value);
std::string getParameter(std::string key) const;
virtual void insertInSparsityPattern(int _row, int _col){};
virtual double normInfRightHandSide() const = 0;
virtual double normInfSolution() const {return 0;};
};
template <class scalar>
class linearSystem : public linearSystemBase {
public :
linearSystem (){}
virtual ~linearSystem (){}
virtual void addToMatrix(int _row, int _col, const scalar &val) = 0;
virtual void getFromMatrix(int _row, int _col, scalar &val) const = 0;
virtual void addToRightHandSide(int _row, const scalar &val) = 0;
virtual void getFromRightHandSide(int _row, scalar &val) const = 0;
virtual void getFromSolution(int _row, scalar &val) const = 0;
virtual void addToSolution(int _row, const scalar &val) = 0;
};
#endif
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