# KSPSetSupportedNorm
Sets a norm and preconditioner side supported by a `KSP` 
## Synopsis
```
#include "petscksp.h" 
PetscErrorCode KSPSetSupportedNorm(KSP ksp, KSPNormType normtype, PCSide pcside, PetscInt priority)
```
Logically Collective


## Input Parameters

- ***ksp -*** Krylov method
- ***normtype -*** supported norm type
- ***pcside -*** preconditioner side that can be used with this norm
- ***priority -*** positive integer preference for this combination; larger values have higher priority





## Note
This function should be called from the implementation files `KSPCreate_XXX()` to declare
which norms and preconditioner sides are supported. Users should not need to call this
function.


## See Also
 `KSP`, `KSPNormType`, `PCSide`, `KSPSetNormType()`, `KSPSetPCSide()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/interface/itcreate.c.html#KSPSetSupportedNorm">src/ksp/ksp/interface/itcreate.c</A>


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


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