AmrPreconditioner.h

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//
// Class AmrPreconditioner
//   Bottom solver preconditioners. Used with Belos bottom solvers.
//
// Copyright (c) 2017 - 2020, Matthias Frey, Paul Scherrer Institut, Villigen PSI, Switzerland
// All rights reserved
//
// Implemented as part of the PhD thesis
// "Precise Simulations of Multibunches in High Intensity Cyclotrons"
//
// This file is part of OPAL.
//
// OPAL 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.
//
// You should have received a copy of the GNU General Public License
// along with OPAL. If not, see <https://www.gnu.org/licenses/>.
//
#ifndef AMR_PRECONDITIONER_H
#define AMR_PRECONDITIONER_H

#include "AmrMultiGridDefs.h"

namespace amr {
    enum Preconditioner {
        NONE,
        ILUT,           
        CHEBYSHEV,
        RILUK,          
        SA,             
        JACOBI,         
        BLOCK_JACOBI,   
        GS,             
        BLOCK_GS        
    };
}

template <class Matrix, class Level>
class AmrPreconditioner
{
public:
    typedef amr::operator_t operator_t;
    
public:
    
    virtual void create(const Teuchos::RCP<Matrix>& A, Level* level_p = nullptr) = 0;
    
    virtual Teuchos::RCP<operator_t> get() = 0;
};


#endif