# KSPGetDiagonalScale
Checks if `KSP` solver scales the matrix and right hand side, that is if `KSPSetDiagonalScale()` has been called 
## Synopsis
```
#include "petscksp.h" 
#include "petscmat.h" 
PetscErrorCode KSPGetDiagonalScale(KSP ksp, PetscBool *scale)
```
Not Collective


## Input Parameter

- ***ksp -*** the `KSP` context



## Output Parameter

- ***scale -*** `PETSC_TRUE` or `PETSC_FALSE`





## See Also
 [](chapter_ksp), `KSP`, `KSPSetDiagonalScale()`, `KSPSetDiagonalScaleFix()`, `KSP`

## Level
intermediate

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


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