locmatrix Class Reference

#include <locmatrix.h>

List of all members.

Public Member Functions

void addresses ()
void allocate_ci ()
void allocate_lm ()
void initiate_ci (long id, long *colind)
void initiate_ci (long *colind)
void initiate_lm (long id, double *a)
void initiate_lm (double *a)
void initiate_nncr (long *a)
void initiate_var (long nrows, long ncolumns)
void lm01xm (gmatrix &a, gmatrix &b)
void lm01xv (double *a, double *b)
void lmt01xv (double *a, double *b)
void lmtxv (double *a, double *b)
void lmxmxlmt (gmatrix &a, gmatrix &b)
void lmxmxlmt01 (gmatrix &a, gmatrix &b)
void lmxv (double *a, double *b)
 locmatrix ()
 ~locmatrix ()

Public Attributes

long * adr
 addresses of the first components in particular rows
long * ci
 column indices
double * lm
 array containing localization matrix
long nc
 number of columns
long nnc
 number of nonzero components
long * nncr
 list of the numbers of nonzero entries in particular rows
long nr
 number of rows
double threshold
 threshold for zero

Detailed Description

class is considered for localization matrix localization matrix is used for localization of local matrices to global matrices and vice versa

localization matrix is stored in twodimensional array with variable lengths, only nonzero entries are stored

JK, 23.12.2006

Definition at line 16 of file locmatrix.h.

Constructor & Destructor Documentation

locmatrix (  ) 

Definition at line 5 of file locmatrix.cpp.

References adr, ci, lm, nc, nnc, nncr, and nr.

~locmatrix (  ) 

Definition at line 13 of file locmatrix.cpp.

References adr, ci, lm, and nncr.

Member Function Documentation

void addresses ( void   ) 

function computes addresses of the first nonzero components in particular rows

JK, 23.12.2006

Definition at line 55 of file locmatrix.cpp.

References adr, nnc, nncr, and nr.

Referenced by smaggreg::localization_matrices().

void allocate_ci (  ) 

function allocates array ci

JK, 23.12.2006

Definition at line 77 of file locmatrix.cpp.

References ci, and nnc.

void allocate_lm (  ) 

function allocates array lm

JK, 23.12.2006

Definition at line 90 of file locmatrix.cpp.

References lm, and nnc.

void initiate_ci ( long  id,
long *  colind 
)

function initiates array column indices ci only column indices of one row are initiated

Parameters:
id - number of actual row
colind - array of column indices

JK, 23.12.2006

Definition at line 139 of file locmatrix.cpp.

References adr, ci, and nr.

void initiate_ci ( long *  colind  ) 

function initiates array column indices ci all components are initiated

Parameters:
colind - array of column indices

JK, 23.12.2006

Definition at line 122 of file locmatrix.cpp.

References adr, ci, and nr.

Referenced by smaggreg::localization_matrices(), and smaggreg::smoothed_prolong().

void initiate_lm ( long  id,
double *  a 
)

function initiates array localization matrix

Parameters:
id - number of actual row
a - array contains entries of localization matrix

JK, 23.12.2006

Definition at line 178 of file locmatrix.cpp.

References adr, lm, and nr.

void initiate_lm ( double *  a  ) 

function initiates array localization matrix all components are initiated

Parameters:
a - array contains entries of localization matrix

JK, 23.12.2006

Definition at line 162 of file locmatrix.cpp.

References adr, lm, and nr.

Referenced by smaggreg::smoothed_prolong().

void initiate_nncr ( long *  a  ) 

function initiates array of numbers of nonzero components in rows

Parameters:
a - array containing numbers of nonzero components in rows a[i]=j - the i-th row contains j nonzero components

JK, 23.12.2006

Definition at line 106 of file locmatrix.cpp.

References nncr, and nr.

Referenced by smaggreg::localization_matrices().

void initiate_var ( long  nrows,
long  ncolumns 
)

function sets up basic variables

Parameters:
nrows - number of rows
ncolumns - number of columns

JK, 23.12.2006

Definition at line 29 of file locmatrix.cpp.

References adr, nc, nncr, and nr.

Referenced by smaggreg::localization_matrices(), and smaggreg::smoothed_prolong().

void lm01xm ( gmatrix &  a,
gmatrix &  b 
)

function multiplies localization matrix by the matrix L A = B matrix A has m rows and n columns

localization matrix contains entries equal to 0 or 1 in this special case, function selects appropriate components and no real multiplication is required

JK, 23.12.2006

Definition at line 306 of file locmatrix.cpp.

References gmatrix::add_entry(), adr, ci, gmatrix::give_entry(), gmatrix::n, and nr.

void lm01xv ( double *  a,
double *  b 
)

function multiplies localization matrix by the vector L a = b

localization matrix contains entries equal to 0 or 1 in this special case, function selects appropriate components and no real multiplication is required

JK, 23.12.2006

Definition at line 250 of file locmatrix.cpp.

References adr, ci, and nr.

void lmt01xv ( double *  a,
double *  b 
)

function multiplies transposed localization matrix by the vector L^T a = b

localization matrix contains entries equal to 0 or 1 in this special case, function selects appropriate components and no real multiplication is required

JK, 23.12.2006

Definition at line 275 of file locmatrix.cpp.

References adr, ci, nc, and nr.

void lmtxv ( double *  a,
double *  b 
)

function multiplies transposed localization matrix by the vector L^T a = b

JK, 23.12.2006

Definition at line 222 of file locmatrix.cpp.

References adr, ci, lm, nc, and nr.

void lmxmxlmt ( gmatrix &  a,
gmatrix &  b 
)

function reduces global matrix to coarse grid matrix number of rows of localization matrix must be less than number of columns

lm(m,n).a(n,n).lm^T(n,m)=b(m,m)

function stores selected matrix entries in the skyline storage format

Parameters:
a - global matrix
b - coarse grid matrix

JK, 6.1.2007

Definition at line 443 of file locmatrix.cpp.

References adr, ci, gmatrix::give_entry(), lm, gmatrix::n, nncr, nr, and threshold.

void lmxmxlmt01 ( gmatrix &  a,
gmatrix &  b 
)

function reduces global matrix to coarse grid matrix localization matrix must be Boolean and only one unit entry has to be in each row and column number of rows of localization matrix must be less than number of columns

lm(m,n).a(n,n).lm^T(n,m)=b(m,m)

function stores selected matrix entries in the skyline storage format

Parameters:
a - global matrix
b - coarse grid matrix

JK, 27.12.2006

Definition at line 338 of file locmatrix.cpp.

References skyline::a, skyline::adr, skyline::allocadr(), skyline::allocglomat(), ci, gmatrix::give_entry(), skyline::neglobmat(), nr, gmatrix::sky, and threshold.

Referenced by smaggreg::local_aggregated_matrices().

void lmxv ( double *  a,
double *  b 
)

function multiplies localization matrix by the vector L a = b

JK, 23.12.2006

Definition at line 201 of file locmatrix.cpp.

References adr, ci, lm, and nr.

Member Data Documentation

long* adr

addresses of the first components in particular rows

Definition at line 55 of file locmatrix.h.

Referenced by addresses(), initiate_ci(), initiate_lm(), initiate_var(), lm01xm(), lm01xv(), lmt01xv(), lmtxv(), lmxmxlmt(), lmxv(), locmatrix(), and ~locmatrix().

long* ci

column indices

Definition at line 61 of file locmatrix.h.

Referenced by allocate_ci(), initiate_ci(), lm01xm(), lm01xv(), lmt01xv(), lmtxv(), lmxmxlmt(), lmxmxlmt01(), lmxv(), locmatrix(), and ~locmatrix().

double* lm

array containing localization matrix

Definition at line 58 of file locmatrix.h.

Referenced by allocate_lm(), initiate_lm(), lmtxv(), lmxmxlmt(), lmxv(), locmatrix(), and ~locmatrix().

long nc

number of columns

Definition at line 46 of file locmatrix.h.

Referenced by initiate_var(), lmt01xv(), lmtxv(), and locmatrix().

long nnc

number of nonzero components

Definition at line 48 of file locmatrix.h.

Referenced by addresses(), allocate_ci(), allocate_lm(), and locmatrix().

long* nncr

list of the numbers of nonzero entries in particular rows

Definition at line 53 of file locmatrix.h.

Referenced by addresses(), initiate_nncr(), initiate_var(), lmxmxlmt(), locmatrix(), and ~locmatrix().

long nr

number of rows

Definition at line 44 of file locmatrix.h.

Referenced by addresses(), initiate_ci(), initiate_lm(), initiate_nncr(), initiate_var(), lm01xm(), lm01xv(), lmt01xv(), lmtxv(), lmxmxlmt(), lmxmxlmt01(), lmxv(), and locmatrix().

double threshold

threshold for zero

Definition at line 50 of file locmatrix.h.

Referenced by lmxmxlmt(), and lmxmxlmt01().

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