MatNestGetSubMat#

Returns a single, sub-matrix from a MATNEST

Synopsis#

#include "petscmat.h"   
PetscErrorCode MatNestGetSubMat(Mat A, PetscInt idxm, PetscInt jdxm, Mat *sub)

Not Collective

Input Parameters#

A - MATNEST matrix
idxm - index of the matrix within the nest matrix
jdxm - index of the matrix within the nest matrix

Output Parameter#

sub - matrix at index idxm, jdxm within the nest matrix

See Also#

Matrices, Mat, MATNEST, MatNestGetSize(), MatNestGetSubMats(), MatCreateNest(), MATNEST, MatNestSetSubMat(), MatNestGetLocalISs(), MatNestGetISs()

Level#

developer

Location#

src/mat/impls/nest/matnest.c

Implementations#

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

Index of all Mat routines
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Index of all manual pages