ISSum
Computes the sum (union) of two index sets.
Synopsis
#include "petscis.h"
int ISSum(IS is1,IS is2,IS *isout)
Collective on IS
Input Parameter
| is1 | - first index set
|
| is2 | - index values to be added
|
Output Parameters
isout -is1 + is2 The index set is2 is appended to is1 removing duplicates
Notes
Negative values are removed from the lists. This requires O(imax-imin)
memory and O(imax-imin) work, where imin and imax are the bounds on the
indices in is1 and is2.
See Also
ISDestroy(), ISView(), ISDifference()
Level:intermediate
Location:src/vec/is/utils/isdiff.c
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages