# PCASMSetType
Sets the type of restriction and interpolation used for local problems in the additive Schwarz method, `PCASM`. 
## Synopsis
```
#include "petscpc.h" 
PetscErrorCode PCASMSetType(PC pc, PCASMType type)
```
Logically Collective on pc


## Input Parameters

- ***pc  -*** the preconditioner context
- ***type -*** variant of `PCASM`, one of


```none
      PC_ASM_BASIC       - full interpolation and restriction
      PC_ASM_RESTRICT    - full restriction, local processor interpolation (default)
      PC_ASM_INTERPOLATE - full interpolation, local processor restriction
      PC_ASM_NONE        - local processor restriction and interpolation
```



## Options Database Key

- ***-pc_asm_type [basic,restrict,interpolate,none] -*** Sets `PCASMType`



## Note
if the is_local arguments are passed to `PCASMSetLocalSubdomains()` then they are used when `PC_ASM_RESTRICT` has been selected
to limit the local processor interpolation




## See Also
 `PCASM`, `PCASMSetTotalSubdomains()`, `PCASMSetTotalSubdomains()`, `PCASMGetSubKSP()`,
`PCASMCreateSubdomains2D()`, `PCASMType`, `PCASMSetLocalType()`, `PCASMGetLocalType()`, `PCGASM`

## Level
intermediate

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

## Implementations

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


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