petsc-3.13.6 2020-09-29
MatNestGetISs
Returns the index sets partitioning the row and column spaces
Synopsis
#include "petscmat.h"
PetscErrorCode MatNestGetISs(Mat A,IS rows[],IS cols[])
Not collective
Input Parameters
A -nest matrix
Output Parameter
| rows | - array of row index sets
|
| cols | - array of column index sets
|
Notes
The user must have allocated arrays of the correct size. The reference count is not increased on the returned ISs.
See Also
MatNestGetSubMat(), MatNestGetSubMats(), MatNestGetSize(), MatNestGetLocalISs(), MATNEST,
MatCreateNest(), MatNestGetSubMats(), MatNestSetSubMats()
Level
advanced
Location
src/mat/impls/nest/matnest.c
Examples
src/snes/tutorials/ex70.c.html
Implementations
MatNestGetISs_Nest in src/mat/impls/nest/matnest.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages