KmlDssSymAnalyze?I

Analyze the data structure, rearrange the row/column of a sparse matrix, and perform symbolic factorization.

Interface Definition

C interface:

int KmlDssSymAnalyzeSI(KmlSolverTask **pHandle);

int KmlDssSymAnalyzeDI(KmlSolverTask **pHandle);

int KmlDssSymAnalyzeCI(KmlSolverTask **pHandle);

int KmlDssSymAnalyzeZI(KmlSolverTask **pHandle);

Parameters

Parameter	Type	Description	Input/Output
pHandle	KmlSolverTask **	Solver handle, which is a variable passed from a previous step.	Input

Return Value

Return Value	Type	Description
KMLSS_NO_ERROR	int	The execution is successful.
KMLSS_NULL_ARGUMENT	int	The pHandle pointer is null.
KMLSS_BAD_HANDLE	int	The format of pHandle is incorrect.
KMLSS_NONZERO_INDEXING	int	The row index pointer does not start from 0. That is, ia[0] is not 0.
KMLSS_MISSING_DIAGONAL_ELEMENT	int	All diagonal elements of the sparse matrix are empty.
KMLSS_INTERNAL_ERROR	int	Empty diagonal elements exist in the sparse matrix or an internal error occurs during algorithm execution.
KMLSS_REORDERING_PROBLEM	int	The reordering algorithm fails.

Dependencies

#include "kml_dss.h" or #include "kml_solver.h"

Examples

C interface:

int n = 8;
int ia[9] = {0, 2, 4, 6, 7, 8, 9, 10, 11};
int ja[11] = {0, 7, 1, 6, 2, 5, 3, 4, 5, 6, 7};
double a[11] = {1.0, 2.0, -2.0, 3.0, 3.0, 4.0, -4.0, 5.0, -6.0, 7.0, 8.0};

KmlSolverTask *handle;
int ierr = KmlDssSymInitDI(&handle, n, a, ja, ia);
if (ierr != 0) {
        printf("\nERROR in KmlDssSymInitDI: %d", ierr);
}
ierr = KmlDssSymAnalyzeDI(&handle);
if (ierr != 0) {
        printf("\nERROR in KmlDssSymAnalyzeDI: %d", ierr);
}

Parent topic: LDLT (DEPRECATED)