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# SNESMultiblockSetType
Sets the type of block combination used for a `SNESMULTBLOCK` solver 
## Synopsis
```
#include "petscsnes.h" 
PetscErrorCode SNESMultiblockSetType(SNES snes, PCCompositeType type)
```
Logically Collective


## Input Parameters

- ***snes -*** the solver context
- ***type -*** `PC_COMPOSITE_ADDITIVE`, `PC_COMPOSITE_MULTIPLICATIVE` (default), `PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE`



## Options Database Key

- ***-snes_multiblock_type <type: one of multiplicative, additive, symmetric_multiplicative> -*** Sets block combination type





## See Also
 `SNESMULTBLOCK`, `PCCompositeSetType()`, `PC_COMPOSITE_ADDITIVE`, `PC_COMPOSITE_MULTIPLICATIVE`, `PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/impls/multiblock/multiblock.c.html#SNESMultiblockSetType">src/snes/impls/multiblock/multiblock.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/impls/multiblock/multiblock.c.html#SNESMultiblockSetType_Default">SNESMultiblockSetType_Default in src/snes/impls/multiblock/multiblock.c</A><BR>


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


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