DMGetBasicAdjacency#

Returns the flags for determining variable influence, using either the default or field 0 if it is defined

Synopsis#

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMGetBasicAdjacency(DM dm, PetscBool *useCone, PetscBool *useClosure)

Not collective

Input Parameter#

  • dm - The DM object

Output Parameters#

  • useCone - Flag for variable influence starting with the cone operation

  • useClosure - Flag for variable influence using transitive closure

Notes#

     FEM:   Two points p and q are adjacent if q \in closure(star(p)),   useCone = PETSC_FALSE, useClosure = PETSC_TRUE
     FVM:   Two points p and q are adjacent if q \in support(p+cone(p)), useCone = PETSC_TRUE,  useClosure = PETSC_FALSE
     FVM++: Two points p and q are adjacent if q \in star(closure(p)),   useCone = PETSC_TRUE,  useClosure = PETSC_TRUE

See Also#

DM Basics, DM, DMSetBasicAdjacency(), DMGetField(), DMSetField()

Level#

developer

Location#

src/dm/interface/dm.c

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