PETSc version 3.17.5
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 PetscSection describing the layout of the array
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| dataType | - MPI_Datatype describing the data type of the array (currently only MPIU_INT, MPIU_SCALAR, MPIU_REAL)
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| origArray | - the array; its size must be equal to the storage size of origSection
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| points | - IS with points to extract; its indices must lie in the chart of origSection
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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
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See Also
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