petsc-3.13.6 2020-09-29
ISConcatenate
Forms a new IS by locally concatenating the indices from an IS list without reordering.
Synopsis
#include "petscis.h"
PetscErrorCode ISConcatenate(MPI_Comm comm, PetscInt len, const IS islist[], IS *isout)
Collective.
Input Parameter
| comm | - communicator of the concatenated IS.
|
| len | - size of islist array (nonnegative)
|
| islist | - array of index sets
|
Output Parameters
isout -The concatenated index set; empty, if len == 0.
Notes
The semantics of calling this on comm imply that the comms of the members if islist also contain this rank.
See Also
ISDifference(), ISSum(), ISExpand()
Level
intermediate
Location
src/vec/is/is/utils/isdiff.c
Examples
src/ksp/ksp/tutorials/ex43.c.html
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages