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/*
ARPACK++ v1.2 2/20/2000
c++ interface to ARPACK code.
MODULE ARBGSym.h.
Arpack++ class ARluSymGenEig definition
(band matrix version).
ARPACK Authors
Richard Lehoucq
Danny Sorensen
Chao Yang
Dept. of Computational & Applied Mathematics
Rice University
Houston, Texas
*/
#ifndef ARBGSYM_H
#define ARBGSYM_H
#include <cstddef>
#include "arch.h"
#include "arbsmat.h"
#include "arbspen.h"
#include "argsym.h"
template<class ARFLOAT>
class ARluSymGenEig:
public virtual ARSymGenEig<ARFLOAT, ARbdSymPencil<ARFLOAT>,
ARbdSymPencil<ARFLOAT> > {
private:
// a) Data structure used to store matrices.
ARbdSymPencil<ARFLOAT> Pencil;
// b) Protected functions:
virtual void Copy(const ARluSymGenEig& other);
// Makes a deep copy of "other" over "this" object.
// Old values are not deleted (this function is to be used
// by the copy constructor and the assignment operator only).
public:
// c) Public functions:
// c.1) Functions that allow changes in problem parameters.
virtual void ChangeShift(ARFLOAT sigmap);
virtual void SetRegularMode();
virtual void SetShiftInvertMode(ARFLOAT sigmap);
virtual void SetBucklingMode(ARFLOAT sigmap);
virtual void SetCayleyMode(ARFLOAT sigmap);
// c.2) Constructors and destructor.
ARluSymGenEig() { }
// Short constructor.
ARluSymGenEig(int nevp, ARbdSymMatrix<ARFLOAT>& A,
ARbdSymMatrix<ARFLOAT>& B, char* whichp = "LM",
int ncvp = 0, ARFLOAT tolp = 0.0, int maxitp = 0,
ARFLOAT* residp = NULL, bool ishiftp = true);
// Long constructor (regular mode).
ARluSymGenEig(char InvertModep, int nevp, ARbdSymMatrix<ARFLOAT>& A,
ARbdSymMatrix<ARFLOAT>& B, 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, buckling and Cayley modes).
ARluSymGenEig(const ARluSymGenEig& other) { Copy(other); }
// Copy constructor.
virtual ~ARluSymGenEig() { }
// Destructor.
// d) Operators.
ARluSymGenEig& operator=(const ARluSymGenEig& other);
// Assignment operator.
}; // class ARluSymGenEig.
// ------------------------------------------------------------------------ //
// ARluSymGenEig member functions definition. //
// ------------------------------------------------------------------------ //
template<class ARFLOAT>
inline void ARluSymGenEig<ARFLOAT>::
Copy(const ARluSymGenEig<ARFLOAT>& other)
{
ARSymGenEig<ARFLOAT, ARbdSymPencil<ARFLOAT>,
ARbdSymPencil<ARFLOAT> >:: Copy(other);
Pencil = other.Pencil;
this->objOP = &Pencil;
this->objB = &Pencil;
this->objA = &Pencil;
} // Copy.
template<class ARFLOAT>
inline void ARluSymGenEig<ARFLOAT>::ChangeShift(ARFLOAT sigmap)
{
this->objOP->FactorAsB(sigmap);
ARrcSymGenEig<ARFLOAT>::ChangeShift(sigmap);
} // ChangeShift.
template<class ARFLOAT>
inline void ARluSymGenEig<ARFLOAT>::SetRegularMode()
{
ARStdEig<ARFLOAT, ARFLOAT, ARbdSymPencil<ARFLOAT> >::
SetRegularMode(&Pencil, &ARbdSymPencil<ARFLOAT>::MultInvBAv);
} // SetRegularMode.
template<class ARFLOAT>
inline void ARluSymGenEig<ARFLOAT>::
SetShiftInvertMode(ARFLOAT sigmap)
{
ARSymGenEig<ARFLOAT, ARbdSymPencil<ARFLOAT>, ARbdSymPencil<ARFLOAT> >::
SetShiftInvertMode(sigmap, &Pencil, &ARbdSymPencil<ARFLOAT>::MultInvAsBv);
ChangeMultBx(&Pencil, &ARbdSymPencil<ARFLOAT>::MultBv);
} // SetShiftInvertMode.
template<class ARFLOAT>
inline void ARluSymGenEig<ARFLOAT>::
SetBucklingMode(ARFLOAT sigmap)
{
ARSymGenEig<ARFLOAT, ARbdSymPencil<ARFLOAT>, ARbdSymPencil<ARFLOAT> >::
SetBucklingMode(sigmap, &Pencil, &ARbdSymPencil<ARFLOAT>::MultInvAsBv);
ChangeMultBx(&Pencil, &ARbdSymPencil<ARFLOAT>::MultAv);
} // SetBucklingMode.
template<class ARFLOAT>
inline void ARluSymGenEig<ARFLOAT>::
SetCayleyMode(ARFLOAT sigmap)
{
ARSymGenEig<ARFLOAT, ARbdSymPencil<ARFLOAT>, ARbdSymPencil<ARFLOAT> >::
SetCayleyMode(sigmap, &Pencil, &ARbdSymPencil<ARFLOAT>::MultInvAsBv,
&Pencil, &ARbdSymPencil<ARFLOAT>::MultAv);
ChangeMultBx(&Pencil, &ARbdSymPencil<ARFLOAT>::MultBv);
} // SetCayleyMode.
template<class ARFLOAT>
inline ARluSymGenEig<ARFLOAT>::
ARluSymGenEig(int nevp, ARbdSymMatrix<ARFLOAT>& A,
ARbdSymMatrix<ARFLOAT>& B, char* whichp, int ncvp,
ARFLOAT tolp, int maxitp, ARFLOAT* residp, bool ishiftp)
{
Pencil.DefineMatrices(A, B);
this->InvertMode = 'S';
this->NoShift();
this->DefineParameters(A.ncols(), nevp, &Pencil,
&ARbdSymPencil<ARFLOAT>::MultInvBAv, &Pencil,
&ARbdSymPencil<ARFLOAT>::MultBv, whichp,
ncvp, tolp, maxitp, residp, ishiftp);
} // Long constructor (regular mode).
template<class ARFLOAT>
inline ARluSymGenEig<ARFLOAT>::
ARluSymGenEig(char InvertModep, int nevp, ARbdSymMatrix<ARFLOAT>& A,
ARbdSymMatrix<ARFLOAT>& B, ARFLOAT sigmap,
char* whichp, int ncvp, ARFLOAT tolp,
int maxitp, ARFLOAT* residp, bool ishiftp)
{
Pencil.DefineMatrices(A, B);
this->DefineParameters(A.ncols(), nevp, &Pencil,
&ARbdSymPencil<ARFLOAT>::MultInvAsBv, &Pencil,
&ARbdSymPencil<ARFLOAT>::MultBv, whichp,
ncvp, tolp, maxitp, residp, ishiftp);
this->InvertMode = this->CheckInvertMode(InvertModep);
switch (this->InvertMode) {
case 'B':
ChangeMultBx(&Pencil, &ARbdSymPencil<ARFLOAT>::MultAv);
case 'S':
ChangeShift(sigmap);
break;
case 'C':
SetCayleyMode(sigmap);
}
} // Long constructor (shift and invert, buckling and Cayley modes).
template<class ARFLOAT>
ARluSymGenEig<ARFLOAT>& ARluSymGenEig<ARFLOAT>::
operator=(const ARluSymGenEig<ARFLOAT>& other)
{
if (this != &other) { // Stroustrup suggestion.
this->ClearMem();
Copy(other);
}
return *this;
} // operator=.
#endif // ARBGSYM_H
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