DMPlexGetLocalOffsetsSupport#

Allocate and populate arrays of local offsets for each face support.

Synopsis#

#include "petscdmplex.h"          
PetscErrorCode DMPlexGetLocalOffsetsSupport(DM dm, DMLabel domain_label, PetscInt label_value, PetscInt *num_faces, PetscInt *num_comp, PetscInt *l_size, PetscInt **offsetsNeg, PetscInt **offsetsPos)

Not collective

Input Parameters#

dm - The DMPLEX object
domain_label - label for DMPLEX domain, or NULL for whole domain
label_value - Stratum value

Output Parameters#

num_faces - Number of local, non-boundary faces
num_comp - Number of components per dof
l_size - Size of local vector
offsetsNeg - Allocated offsets array for cells on the inward normal side of each face
offsetsPos - Allocated offsets array for cells on the outward normal side of each face

Notes#

Allocate and populate array of shape [num_cells, num_comp] defining offsets for each cell for local vector of the DMPLEX field. All offsets are in the range [0, l_size - 1].

Caller is responsible for freeing the offsets array using PetscFree().