#include "petscao.h" PetscErrorCode AOSetIS(AO ao,IS isapp,IS ispetsc)Collective
| ao | - the Section 1.5 Writing Application Codes with PETSc ordering | |
| isapp | - index set that defines an ordering | |
| ispetsc | - index set that defines another ordering (may be NULL to use the natural ordering) |
This routine increases the reference count of isapp and ispetsc so you may/should destroy these arguments after this call if you no longer need them