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/*
ARPACK++ v1.2 2/20/2000
c++ interface to ARPACK code.
MODULE ARBSSym.h.
Arpack++ class ARluSymStdEig definition
(band matrix version).
ARPACK Authors
Richard Lehoucq
Danny Sorensen
Chao Yang
Dept. of Computational & Applied Mathematics
Rice University
Houston, Texas
*/
#ifndef ARBSSYM_H
#define ARBSSYM_H
#include <cstddef>
#include "arch.h"
#include "arssym.h"
#include "arbsmat.h"
template<class ARFLOAT>
class ARluSymStdEig:
public virtual ARSymStdEig<ARFLOAT, ARbdSymMatrix<ARFLOAT> > {
public:
// a) Public functions:
// a.1) Functions that allow changes in problem parameters.
virtual void ChangeShift(ARFLOAT sigmaRp);
virtual void SetRegularMode();
virtual void SetShiftInvertMode(ARFLOAT sigmap);
// a.2) Constructors and destructor.
ARluSymStdEig() { }
// Short constructor.
ARluSymStdEig(int nevp, ARbdSymMatrix<ARFLOAT>& A,
char* whichp = "LM", int ncvp = 0,
ARFLOAT tolp = 0.0, int maxitp = 0,
ARFLOAT* residp = NULL, bool ishiftp = true);
// Long constructor (regular mode).
ARluSymStdEig(int nevp, ARbdSymMatrix<ARFLOAT>& A,
ARFLOAT sigma, char* whichp = "LM", int ncvp = 0,
ARFLOAT tolp = 0.0, int maxitp = 0,
ARFLOAT* residp = NULL, bool ishiftp = true);
// Long constructor (shift and invert mode).
ARluSymStdEig(const ARluSymStdEig& other) { Copy(other); }
// Copy constructor.
virtual ~ARluSymStdEig() { }
// Destructor.
// b) Operators.
ARluSymStdEig& operator=(const ARluSymStdEig& other);
// Assignment operator.
}; // class ARluSymStdEig.
// ------------------------------------------------------------------------ //
// ARluSymStdEig member functions definition. //
// ------------------------------------------------------------------------ //
template<class ARFLOAT>
inline void ARluSymStdEig<ARFLOAT>::
ChangeShift(ARFLOAT sigmaRp)
{
this->sigmaR = sigmaRp;
this->sigmaI = 0.0;
this->mode = 3;
this->iparam[7] = this->mode;
this->objOP->FactorAsI(this->sigmaR);
this->Restart();
} // ChangeShift.
template<class ARFLOAT>
inline void ARluSymStdEig<ARFLOAT>::SetRegularMode()
{
ARStdEig<ARFLOAT, ARFLOAT, ARbdSymMatrix<ARFLOAT> >::
SetRegularMode(this->objOP, &ARbdSymMatrix<ARFLOAT>::MultMv);
} // SetRegularMode.
template<class ARFLOAT>
inline void ARluSymStdEig<ARFLOAT>::SetShiftInvertMode(ARFLOAT sigmap)
{
ARStdEig<ARFLOAT, ARFLOAT, ARbdSymMatrix<ARFLOAT> >::
SetShiftInvertMode(sigmap, this->objOP, &ARbdSymMatrix<ARFLOAT>::MultInvv);
} // SetShiftInvertMode.
template<class ARFLOAT>
inline ARluSymStdEig<ARFLOAT>::
ARluSymStdEig(int nevp, ARbdSymMatrix<ARFLOAT>& A,
char* whichp, int ncvp, ARFLOAT tolp,
int maxitp, ARFLOAT* residp, bool ishiftp)
{
this->NoShift();
this->DefineParameters(A.ncols(), nevp, &A, &ARbdSymMatrix<ARFLOAT>::MultMv,
whichp, ncvp, tolp, maxitp, residp, ishiftp);
} // Long constructor (regular mode).
template<class ARFLOAT>
inline ARluSymStdEig<ARFLOAT>::
ARluSymStdEig(int nevp, ARbdSymMatrix<ARFLOAT>& A,
ARFLOAT sigmap, char* whichp, int ncvp, ARFLOAT tolp,
int maxitp, ARFLOAT* residp, bool ishiftp)
{
this->DefineParameters(A.ncols(), nevp, &A, &ARbdSymMatrix<ARFLOAT>::MultInvv,
whichp, ncvp, tolp, maxitp, residp, ishiftp);
this->ChangeShift(sigmap);
} // Long constructor (shift and invert mode).
template<class ARFLOAT>
ARluSymStdEig<ARFLOAT>& ARluSymStdEig<ARFLOAT>::
operator=(const ARluSymStdEig<ARFLOAT>& other)
{
if (this != &other) { // Stroustrup suggestion.
this->ClearMem();
Copy(other);
}
return *this;
} // operator=.
#endif // ARBSSYM_H
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