DMGetNearNullSpaceConstructor#
Return the callback function which constructs the near-nullspace for a given field, defined with DMAddField()
Synopsis#
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
PetscErrorCode DMGetNearNullSpaceConstructor(DM dm, PetscInt field, PetscErrorCode (**nullsp)(DM dm, PetscInt origField, PetscInt field, MatNullSpace *nullSpace))
Not Collective; No Fortran Support
Input Parameters#
dm - The
DMfield - The field number for the nullspace
Output Parameter#
nullsp - A callback to create the near-nullspace
Calling sequence of nullsp#
See Also#
DM Basics, DM, DMAddField(), DMGetField(), DMSetNearNullSpaceConstructor(), DMSetNullSpaceConstructor(), DMGetNullSpaceConstructor(), DMCreateSubDM(),
MatNullSpace, DMCreateSuperDM()
Level#
intermediate
Location#
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages