BandeMatrix Class Reference

#include <band_matrix.h>

Inheritance diagram for BandeMatrix:

[legend]Collaboration diagram for BandeMatrix:

[legend]List of all members.

Public Member Functions
	BandeMatrix (int taille, int kl, int ku)
int	FactoLU ()
	perform LU facotrization
double &	operator() (int i, int j)
	access to the coordinate i,j
int	PrintCompressed (char *f)
int	Solve (Vector *r)
	solve the system Ax=b where b is residu parameter and A is current class.
int	zero ()
	~BandeMatrix ()
Private Attributes
int	dim
int	kl
int	ku
double	nulle

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Detailed Description

Class that implements a band matrix as a higher layer of Lapack

Definition at line 56 of file band_matrix.h.

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Constructor & Destructor Documentation

BandeMatrix::BandeMatrix	(	int	taille,
		int	kl,
		int	ku
	)			[inline]

Definition at line 60 of file band_matrix.h.

References dim, MyMatrix< BandeMatrix >::matrix, nulle, and zero().

                                       :MyMatrix<BandeMatrix>(taille,taille){
    this->kl = kl;
    this->ku = ku;
    dim = 2*kl+ku+1;
    matrix = new double[taille*dim];
    zero();
    nulle=0;
  };

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BandeMatrix::~BandeMatrix

(

)

[inline]

Definition at line 68 of file band_matrix.h.

{};

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Member Function Documentation

int BandeMatrix::FactoLU

(

)

[inline]

perform LU facotrization

Reimplemented from MyMatrix< BandeMatrix >.

Definition at line 82 of file band_matrix.h.

References MyMatrix< BandeMatrix >::_m, factoLUBand(), kl, ku, MyMatrix< BandeMatrix >::matrix, and MyMatrix< BandeMatrix >::pivot.

               {
    pivot = factoLUBand(matrix,kl,ku,_m);
    if (pivot==0)
      return -1;
    else 
      return 0;
  }

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double& BandeMatrix::operator()	(	int	i,
		int	j
	)			[inline]

access to the coordinate i,j

Reimplemented from MyMatrix< BandeMatrix >.

Reimplemented in DiagMatrix.

Definition at line 70 of file band_matrix.h.

References dim, kl, ku, MyMatrix< BandeMatrix >::matrix, and nulle.

                                 {
    int k = j-i;

    // diagonale supérieure
    if (k>ku || k < -kl){
      nulle = 0;
      return nulle;
    }
    
    return matrix[kl+ku-k+j*dim];
  }

int BandeMatrix::PrintCompressed

(

char *

f

)

[inline]

Definition at line 100 of file band_matrix.h.

References MyMatrix< BandeMatrix >::_m, dim, file, and MyMatrix< BandeMatrix >::matrix.

                               {
    FILE * file = fopen(f,"wb+");    

    for (int i=0;i< dim;++i)
      for (int j=0;j< _m;++j)
        {
          fprintf(file,"%d\t%d\t%.15e\n",i+1,j+1,matrix[i+dim*j]);
        }

    fclose(file);
    return 0;
  }

int BandeMatrix::Solve

(

Vector *

residu

)

[inline]

solve the system Ax=b where b is residu parameter and A is current class.

Reimplemented from MyMatrix< BandeMatrix >.

Definition at line 90 of file band_matrix.h.

References MyMatrix< BandeMatrix >::_m, Vector::GetVector(), kl, ku, MyMatrix< BandeMatrix >::matrix, MyMatrix< BandeMatrix >::pivot, and solveBandMatrix().

                       {
    solveBandMatrix(matrix,r->GetVector(),kl,ku,_m,pivot);
    return 0;
  }

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int BandeMatrix::zero

(

)

[inline]

Definition at line 95 of file band_matrix.h.

References MyMatrix< BandeMatrix >::_m, dim, and MyMatrix< BandeMatrix >::matrix.

Referenced by BandeMatrix().

            {
    memset(matrix,0,_m*dim*sizeof(double)); // mise a zero  
    return 0;
  }

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Member Data Documentation

int BandeMatrix::dim [private]

Definition at line 115 of file band_matrix.h.

Referenced by BandeMatrix(), operator()(), PrintCompressed(), and zero().

int BandeMatrix::kl [private]

Definition at line 115 of file band_matrix.h.

Referenced by FactoLU(), operator()(), and Solve().

int BandeMatrix::ku [private]

Definition at line 115 of file band_matrix.h.

Referenced by FactoLU(), operator()(), and Solve().

double BandeMatrix::nulle [private]

Definition at line 116 of file band_matrix.h.

Referenced by BandeMatrix(), and operator()().

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The documentation for this class was generated from the following file:

• math/band_matrix.h

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