PETSc version 3.17.0
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# DMShellGetCreateSubDM

Get the routine used to create a sub DM from the shell DM

### Synopsis

    #include "petscdmshell.h"
    PetscErrorCode DMShellGetCreateSubDM(DM dm, PetscErrorCode (**subdm)(DM,PetscInt,const PetscInt[],IS*,DM*))

Logically Collective on dm

### Input Parameter

| dm | - the shell DM

### Output Parameter

| subdm | - the routine to create the decomposition

### See Also

DMCreateSubDM(), DMShellSetCreateSubDM(), DMShellSetContext(), DMShellGetContext()

### Level

advanced

### Location

src/dm/impls/shell/dmshell.c
Index of all DM routines
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Index of all manual pages