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# PCBDDCSetNeumannBoundaries
Set the `IS` defining Neumann boundaries for the global problem. 
## Synopsis
```
#include "petscpc.h" 
PetscErrorCode PCBDDCSetNeumannBoundaries(PC pc, IS NeumannBoundaries)
```
Collective


## Input Parameters

- ***pc -*** the preconditioning context
- ***NeumannBoundaries -*** parallel `IS` defining the Neumann boundaries





## Note
Any process can list any global node


## See Also
 `PCBDDC`, `PCBDDCSetNeumannBoundariesLocal()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/bddc/bddc.c.html#PCBDDCSetNeumannBoundaries">src/ksp/pc/impls/bddc/bddc.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/bddc/bddc.c.html#PCBDDCSetNeumannBoundaries_BDDC">PCBDDCSetNeumannBoundaries_BDDC in src/ksp/pc/impls/bddc/bddc.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ksp/pc/impls/bddc/bddc.c)


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