aca_approximate_lu_inverse.hpp

// Copyright (C) 2011-2012 by the BEM++ Authors
//
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// of this software and associated documentation files (the "Software"), to deal
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// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#ifndef bempp_aca_approximate_lu_inverse_hpp
#define bempp_aca_approximate_lu_inverse_hpp

#include "../common/common.hpp"

#include "bempp/common/config_trilinos.hpp"
#include "discrete_boundary_operator.hpp"

#include "ahmed_aux_fwd.hpp"
#include "index_permutation.hpp"
#include "../fiber/scalar_traits.hpp"
#include "../fiber/verbosity_level.hpp"

#ifdef WITH_TRILINOS
#include <Thyra_SpmdVectorSpaceBase_decl.hpp>
#endif

using Fiber::VerbosityLevel;

namespace Bempp
{

template <typename ValueType> class DiscreteAcaBoundaryOperator;
template <typename ValueType>
class AcaApproximateLuInverse : public DiscreteBoundaryOperator<ValueType>
{
public:
    typedef typename Fiber::ScalarTraits<ValueType>::RealType MagnitudeType;

    AcaApproximateLuInverse(
            const DiscreteAcaBoundaryOperator<ValueType>& fwdOp,
            MagnitudeType delta,
            VerbosityLevel::Level verbosityLevel = VerbosityLevel::DEFAULT);

    virtual ~AcaApproximateLuInverse();

    virtual unsigned int rowCount() const;
    virtual unsigned int columnCount() const;

    virtual void addBlock(const std::vector<int>& rows,
                          const std::vector<int>& cols,
                          const ValueType alpha,
                          arma::Mat<ValueType>& block) const;

#ifdef WITH_TRILINOS
public:
    virtual Teuchos::RCP<const Thyra::VectorSpaceBase<ValueType> > domain() const;
    virtual Teuchos::RCP<const Thyra::VectorSpaceBase<ValueType> > range() const;

protected:
    virtual bool opSupportedImpl(Thyra::EOpTransp M_trans) const;
#endif

private:
    virtual void applyBuiltInImpl(const TranspositionMode trans,
                                  const arma::Col<ValueType>& x_in,
                                  arma::Col<ValueType>& y_inout,
                                  const ValueType alpha,
                                  const ValueType beta) const;



private:
    typedef typename Fiber::ScalarTraits<ValueType>::RealType CoordinateType;
    typedef AhmedDofWrapper<CoordinateType> AhmedDofType;
    typedef mblock<typename AhmedTypeTraits<ValueType>::Type> AhmedMblock;

#ifdef WITH_TRILINOS
    Teuchos::RCP<const Thyra::SpmdVectorSpaceBase<ValueType> > m_domainSpace;
    Teuchos::RCP<const Thyra::SpmdVectorSpaceBase<ValueType> > m_rangeSpace;
#else
    unsigned int m_rowCount;
    unsigned int m_columnCount;
#endif

    blcluster* m_blockCluster;
    AhmedMblock** m_blocksL;
    AhmedMblock** m_blocksU;

    IndexPermutation m_domainPermutation;
    IndexPermutation m_rangePermutation;
};

} // namespace Bempp

#endif