petsc-3.11.4 2019-09-28
PetscSectionExtractDofsFromArray
Extracts elements of an array corresponding to DOFs of specified points.
Synopsis
#include "petscvec.h"
PetscErrorCode PetscSectionExtractDofsFromArray(PetscSection origSection, MPI_Datatype dataType, const void *origArray, IS points, PetscSection *newSection, void *newArray[])
Not collective
Input Parameters
| origSection | - the PetscSection describing the layout of the array
|
| dataType | - MPI_Datatype describing the data type of the array (currently only MPIU_INT, MPIU_SCALAR, MPIU_REAL)
|
| origArray | - the array; its size must be equal to the storage size of origSection
|
| points | - IS with points to extract; its indices must lie in the chart of origSection
|
Output Parameters
| newSection | - the new PetscSection desribing 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
PetscSectionGetChart(), PetscSectionGetDof(), PetscSectionGetStorageSize(), PetscSectionCreate()
Level
developer
Location
src/vec/is/utils/vsectionis.c
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages