DMCompareLabels#

Compare labels between two DM objects

Synopsis#

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMCompareLabels(DM dm0, DM dm1, PetscBool *equal, char **message)

Collective; No Fortran Support

Input Parameters#

  • dm0 - First DM object

  • dm1 - Second DM object

Output Parameters#

  • equal - (Optional) Flag whether labels of dm0 and dm1 are the same

  • message - (Optional) Message describing the difference, or NULL if there is no difference

Notes#

The output flag equal will be the same on all processes.

If equal is passed as NULL and difference is found, an error is thrown on all processes.

Make sure to pass equal is NULL on all processes or none of them.

The output message is set independently on each rank.

message must be freed with PetscFree()

If message is passed as NULL and a difference is found, the difference description is printed to stderr in synchronized manner.

Make sure to pass message as NULL on all processes or no processes.

Labels are matched by name. If the number of labels and their names are equal, DMLabelCompare() is used to compare each pair of labels with the same name.

See Also#

DM Basics, DM, DMLabel, DMAddLabel(), DMCopyLabelsMode, DMLabelCompare()

Level#

intermediate

Location#

src/dm/interface/dm.c

Examples#

src/dm/label/tutorials/ex1.c

Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages