1 line
3 KiB
C
1 line
3 KiB
C
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/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* ******** *** SparseLib++ */
/* ******* ** *** *** *** v. 1.5c */
/* ***** *** ******** ******** */
/* ***** *** ******** ******** R. Pozo */
/* ** ******* *** ** *** *** K. Remington */
/* ******** ******** A. Lumsdaine */
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* */
/* */
/* SparseLib++ : Sparse Matrix Library */
/* */
/* National Institute of Standards and Technology */
/* University of Notre Dame */
/* Authors: R. Pozo, K. Remington, A. Lumsdaine */
/* */
/* NOTICE */
/* */
/* Permission to use, copy, modify, and distribute this software and */
/* its documentation for any purpose and without fee is hereby granted */
/* provided that the above notice appear in all copies and supporting */
/* documentation. */
/* */
/* Neither the Institutions (National Institute of Standards and Technology, */
/* University of Notre Dame) nor the Authors make any representations about */
/* the suitability of this software for any purpose. This software is */
/* provided ``as is'' without expressed or implied warranty. */
/* */
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
#ifndef DIAGPRE_H
#define DIAGPRE_H
//#include "vecdefs.h"
#include "vecdefs_GR.h" // modif GR
//#include VECTOR_H
#include "comprow_double.h"
#include "compcol_double.h"
class DiagPreconditioner_double {
private:
VECTOR_double diag_;
public:
DiagPreconditioner_double (const CompCol_Mat_double &);
DiagPreconditioner_double (const CompRow_Mat_double &);
~DiagPreconditioner_double (void) { };
VECTOR_double solve (const VECTOR_double &x) const;
VECTOR_double trans_solve (const VECTOR_double &x) const;
protected : // modif GR : les deux fonctions suivantes ne sont pas g<>n<EFBFBD>riques
// d'o<> le status protected
const double& diag(int i) const { return diag_(i); }
double& diag(int i) { return diag_(i); }
};
#endif
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