PetscSectionExtractDofsFromArray#
Extracts elements of an array corresponding to DOFs of specified points.
Synopsis#
#include "petscsection.h"
PetscErrorCode PetscSectionExtractDofsFromArray(PetscSection origSection, MPI_Datatype dataType, const void *origArray, IS points, PetscSection *newSection, void *newArray[])
Not Collective
Input Parameters#
origSection - the
PetscSectiondescribing the layout of the arraydataType -
MPI_Datatypedescribing the data type of the array (currently onlyMPIU_INT,MPIU_SCALAR,MPIU_REAL)origArray - the array; its size must be equal to the storage size of
origSectionpoints -
ISwith points to extract; its indices must lie in the chart oforigSection
Output Parameters#
newSection - the new
PetscSectiondescribing the layout of the new array (with points renumbered 0,1,… but preserving numbers of DOFs)newArray - the array of the extracted DOFs; its size is the storage size of
newSection
See Also#
PetscSection, PetscSectionSym, PetscSectionGetChart(), PetscSectionGetDof(), PetscSectionGetStorageSize(), PetscSectionCreate()
Level#
developer
Location#
src/vec/is/section/interface/section.c
Index of all PetscSection routines
Table of Contents for all manual pages
Index of all manual pages