petsc-3.9.4 2018-09-11
DMCompositeGetAccessArray
Allows one to access the individual packed vectors in their global representation.
Synopsis
#include "petscdmcomposite.h"
PetscErrorCode DMCompositeGetAccessArray(DM dm,Vec pvec,PetscInt nwanted,const PetscInt *wanted,Vec *vecs)
Collective on DMComposite
Input Parameters
| dm | - the packer object
|
| pvec | - packed vector
|
| nwanted | - number of vectors wanted
|
| wanted | - sorted array of vectors wanted, or NULL to get all vectors
|
Output Parameters
vecs -array of requested global vectors (must be allocated)
Notes: Use DMCompositeRestoreAccessArray() to return the vectors when you no longer need them
See Also
DMCompositeGetAccess(), DMCompositeGetEntries(), DMCompositeScatter(), DMCompositeGather()
Level
advanced
Location
src/dm/impls/composite/pack.c
Examples
src/snes/examples/tutorials/ex73f90t.F90.html
Index of all DM routines
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Index of all manual pages