MatNestGetLocalISs#

Returns the index sets partitioning the row and column spaces of a MATNEST

Synopsis#

#include "petscmat.h"   
PetscErrorCode MatNestGetLocalISs(Mat A, IS rows[], IS cols[])

Not Collective

Input Parameter#

Output Parameters#

  • rows - array of row index sets (or NULL to ignore)

  • cols - array of column index sets (or NULL to 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(), MatNestGetISs(), MatCreateNest(), MATNEST, MatNestSetSubMats(), MatNestSetSubMat()

Level#

advanced

Location#

src/mat/impls/nest/matnest.c

Implementations#

MatNestGetLocalISs_Nest in src/mat/impls/nest/matnest.c

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