slepc-main 2024-12-17
DSGetDimensions
Returns the current dimensions.
Synopsis
#include "slepcds.h"
PetscErrorCode DSGetDimensions(DS ds,PetscInt *n,PetscInt *l,PetscInt *k,PetscInt *t)
Not Collective
Input Parameter
| ds | - the direct solver context
|
Output Parameters
| n | - the current size
|
| l | - number of locked (inactive) leading columns
|
| k | - intermediate dimension (e.g., position of arrow)
|
| t | - truncated length
|
Note
The t parameter makes sense only if DSTruncate() has been called.
Otherwise its value equals n.
Some DS types have additional dimensions, e.g. the number of columns
in DSSVD. For these, you should call a specific interface function.
See Also
DSSetDimensions(), DSTruncate(), DSSVDGetDimensions()
Level
intermediate
Location
src/sys/classes/ds/interface/dsops.c
Index of all DS routines
Table of Contents for all manual pages
Index of all manual pages