petsc-3.12.4 2020-02-04
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# DMHasLabel

Determine whether the mesh has a label of a given name

### Synopsis

    #include "petscdm.h"
    #include "petscdmlabel.h"
    #include "petscds.h"
    PetscErrorCode DMHasLabel(DM dm, const char name[], PetscBool *hasLabel)

Not Collective

### Input Parameters

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

### Output Parameter

hasLabel -PETSC_TRUE if the label is present

### See Also

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

### Level

intermediate

### Location

src/dm/interface/dm.c

### Examples

src/snes/examples/tutorials/ex12.c.html
src/ts/examples/tutorials/ex11.c.html
src/ts/examples/tutorials/ex48.c.html
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages