slepc-3.22.2 2024-12-02
DSSetExtraRow
Sets a flag to indicate that the matrix has one extra row.
Synopsis
#include "slepcds.h"
PetscErrorCode DSSetExtraRow(DS ds,PetscBool ext)
Logically Collective
Input Parameters
| ds | - the direct solver context
|
| ext | - a boolean flag
|
Notes
In Krylov methods it is useful that the matrix representing the direct solver
has one extra row, i.e., has dimension (n+1) x n. If this flag is activated, all
transformations applied to the right of the matrix also affect this additional
row. In that case, (n+1) must be less or equal than the leading dimension.
The default is PETSC_FALSE.
See Also
DSSolve(), DSAllocate(), DSGetExtraRow()
Level
advanced
Location
src/sys/classes/ds/interface/dsbasic.c
Index of all DS routines
Table of Contents for all manual pages
Index of all manual pages