# PCBDDCSetDirichletBoundariesLocal
Set IS defining Dirichlet boundaries for the global problem in local ordering.
## Synopsis
```
#include "petscpc.h"
PetscErrorCode PCBDDCSetDirichletBoundariesLocal(PC pc, IS DirichletBoundaries)
```
Collective
## Input Parameters
- ***pc -*** the preconditioning context
- ***DirichletBoundaries -*** parallel IS defining the Dirichlet boundaries (in local ordering)
## See Also
`PCBDDC`, `PCBDDCSetDirichletBoundaries()`, `MatZeroRows()`, `MatZeroRowsColumns()`
## Level
intermediate
## Location
src/ksp/pc/impls/bddc/bddc.c
## Examples
src/ksp/ksp/tutorials/ex59.c.html
## Implementations
PCBDDCSetDirichletBoundariesLocal_BDDC in src/ksp/pc/impls/bddc/bddc.c
---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ksp/pc/impls/bddc/bddc.c)
[Index of all PC routines](index.md)
[Table of Contents for all manual pages](/docs/manualpages/index.md)
[Index of all manual pages](/docs/manualpages/singleindex.md)