# PetscSFBcastEnd
end a broadcast & reduce operation started with `PetscSFBcastBegin()` 
## Synopsis
```
#include "petscsf.h" 
PetscErrorCode PetscSFBcastEnd(PetscSF sf, MPI_Datatype unit, const void *rootdata, void *leafdata, MPI_Op op)
```
Collective


## Input Parameters

- ***sf -*** star forest
- ***unit -*** data type
- ***rootdata -*** buffer to broadcast
- ***op -*** operation to use for reduction



## Output Parameter

- ***leafdata -*** buffer to be reduced with values from each leaf's respective root





## See Also
 `PetscSF`, `PetscSFSetGraph()`, `PetscSFReduceEnd()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/sf/interface/sf.c.html#PetscSFBcastEnd">src/vec/is/sf/interface/sf.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/sf/tutorials/ex1.c.html">src/vec/is/sf/tutorials/ex1.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/sf/tutorials/ex1f.F90.html">src/vec/is/sf/tutorials/ex1f.F90.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/sf/tutorials/ex2.c.html">src/vec/is/sf/tutorials/ex2.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/sf/tutorials/ex3.c.html">src/vec/is/sf/tutorials/ex3.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/plex/tutorials/ex14.c.html">src/dm/impls/plex/tutorials/ex14.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/tutorials/ex11_sa.c.html">src/ts/tutorials/ex11_sa.c.html</A><BR>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/sf/impls/basic/sfbasic.c.html#PetscSFBcastEnd_Basic">PetscSFBcastEnd_Basic in src/vec/is/sf/impls/basic/sfbasic.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/sf/impls/window/sfwindow.c.html#PetscSFBcastEnd_Window">PetscSFBcastEnd_Window in src/vec/is/sf/impls/window/sfwindow.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/vec/is/sf/interface/sf.c)


[Index of all PetscSF routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
