:orphan:
# MatCoarsenRegisterAll
Registers all of the matrix Coarsen routines in PETSc. 
## Synopsis
```
PetscErrorCode MatCoarsenRegisterAll(void)
```
Not Collective




## Adding new methods
To add a new method to the registry. Copy this routine and
modify it to incorporate a call to MatCoarsenRegister() for
the new method, after the current list.

Restricting the choices: To prevent all of the methods from being
registered and thus save memory, copy this routine and modify it to
register a zero, instead of the function name, for those methods you
do not wish to register.  Make sure that the replacement routine is
linked before libpetscmat.a.


## See Also
 `MatCoarsen`, `MatCoarsenType`, `MatCoarsenRegister()`, `MatCoarsenRegisterDestroy()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/coarsen/scoarsen.c.html#MatCoarsenRegisterAll">src/mat/coarsen/scoarsen.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/coarsen/scoarsen.c)


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