MatNestGetISs#
Returns the index sets partitioning the row and column spaces of a MATNEST
Synopsis#
#include "petscmat.h"   
PetscErrorCode MatNestGetISs(Mat A, IS rows[], IS cols[])
Not Collective
Input Parameter#
- A - - MATNESTmatrix
Output Parameters#
- rows - array of row index sets (pass - NULLto ignore)
- cols - array of column index sets (pass - NULLto ignore)
Note#
The user must have allocated arrays of the correct size. The reference count is not increased on the returned ISs.
See Also#
Matrices, Mat, MATNEST, MatNestGetSubMat(), MatNestGetSubMats(), MatNestGetSize(), MatNestGetLocalISs(),
MatCreateNest(), MatNestSetSubMats()
Level#
advanced
Location#
Examples#
src/snes/tutorials/ex70.c
src/ksp/ksp/tutorials/ex81a.c
src/ksp/ksp/tutorials/ex81.c
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