slepc-3.22.1 2024-10-28
BVGetArray
Returns a pointer to a contiguous array that contains this processor's portion of the BV data.
Synopsis
#include "slepcbv.h"
PetscErrorCode BVGetArray(BV bv,PetscScalar **a)
Logically Collective
Input Parameters
| bv | - the basis vectors context
|
Output Parameter
| a | - location to put pointer to the array
|
Notes
BVRestoreArray() must be called when access to the array is no longer needed.
This operation may imply a data copy, for BV types that do not store
data contiguously in memory.
The pointer will normally point to the first entry of the first column,
but if the BV has constraints then these go before the regular columns.
Note that for manipulating the pointer to the BV array, one must take into
account the leading dimension, which might be different from the local
number of rows, see BVGetLeadingDimension().
Use BVGetArrayRead() for read-only access.
See Also
BVRestoreArray(), BVInsertConstraints(), BVGetLeadingDimension(), BVGetArrayRead()
Level
advanced
Location
src/sys/classes/bv/interface/bvbasic.c
Index of all BV routines
Table of Contents for all manual pages
Index of all manual pages