DirectLinearSolverComplex.h

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/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General turalPublic License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * Written (W) 2013 Soumyajit De
 */

#ifndef DIRECT_LINEAR_SOLVER_COMPLEX_H_
#define DIRECT_LINEAR_SOLVER_COMPLEX_H_

#include <shogun/lib/config.h>

#ifdef HAVE_EIGEN3
#include <shogun/mathematics/linalg/linsolver/LinearSolver.h>

namespace shogun
{

enum EDirectSolverType
{
    DS_LLT=0,
    DS_QR_NOPERM=1,
    DS_QR_COLPERM=2,
    DS_QR_FULLPERM=3,
    DS_SVD=4
};

class CDirectLinearSolverComplex : public CLinearSolver<complex128_t, float64_t>
{
public:
    CDirectLinearSolverComplex();

    CDirectLinearSolverComplex(EDirectSolverType type);

    virtual ~CDirectLinearSolverComplex();

    virtual SGVector<complex128_t> solve(CLinearOperator<complex128_t>* A,
            SGVector<float64_t> b);

    virtual const char* get_name() const
    {
        return "DirectLinearSolverComplex";
    }

private:
    const EDirectSolverType m_type;

};

}

#endif // HAVE_EIGEN3
#endif // DIRECT_LINEAR_SOLVER_COMPLEX_H_