PETSc version 3.17.4
DMPlexGetLocalOffsets
Allocate and populate array of local offsets.
Synopsis
#include "petscdmplex.h"
PetscErrorCode DMPlexGetLocalOffsets(DM dm, DMLabel domain_label, PetscInt label_value, PetscInt height, PetscInt dm_field, PetscInt *num_cells, PetscInt *cell_size, PetscInt *num_comp, PetscInt *l_size, PetscInt **offsets)
Input Parameters
dm - The DMPlex object
domain_label - label for DMPlex domain, or NULL for whole domain
label_value - Stratum value
height - Height of target cells in DMPlex topology
dm_field - Index of DMPlex field
Output Parameters
num_cells - Number of local cells
cell_size - Size of each cell, given by cell_size * num_comp = num_dof
num_comp - Number of components per dof
l_size - Size of local vector
offsets - Allocated offsets array for cells
Notes: Allocate and populate array of shape [num_cells, cell_size] defining offsets for each value (cell, node) 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().
See Also
DMPlexGetClosureIndices(), DMPlexSetClosurePermutationTensor(), DMPlexGetCeedRestriction()
Level
developer
Location
src/dm/impls/plex/plexceed.c
Examples
src/dm/impls/plex/tutorials/ex8.c.html
Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages