petsc-3.14.5 2021-03-03
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# DMGetLabel

Return the label of a given name, or NULL

### Synopsis

    #include "petscdm.h"
    #include "petscdmlabel.h"
    #include "petscds.h"
    PetscErrorCode DMGetLabel(DM dm, const char name[], DMLabel *label)

Not Collective

### Input Parameters

| dm | - The DM object
| name | - The label name

### Output Parameter

| label | - The DMLabel, or NULL if the label is absent

### See Also

DMCreateLabel(), DMHasLabel(), DMGetLabelValue(), DMSetLabelValue(), DMGetStratumIS()

### Level

intermediate

### Location

src/dm/interface/dm.c

### Examples

src/dm/impls/plex/tutorials/ex2.c.html
src/dm/impls/plex/tutorials/ex6.c.html
src/dm/impls/plex/tutorials/ex1f90.F90.html
src/dm/label/tutorials/ex1.c.html
src/dm/label/tutorials/ex1f90.F90.html
src/snes/tutorials/ex12.c.html
src/snes/tutorials/ex56.c.html
src/snes/tutorials/ex77.c.html
src/ts/tutorials/ex11.c.html
src/ts/tutorials/ex45.c.html
src/ts/tutorials/ex46.c.html
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages