# PCFieldSplitSetSchurScale
Controls the sign flip of S for `PC_FIELDSPLIT_SCHUR_FACT_DIAG`. 
## Synopsis
```
#include "petscpc.h" 
PetscErrorCode PCFieldSplitSetSchurScale(PC pc, PetscScalar scale)
```
Collective on pc


## Input Parameters

- ***pc    -*** the preconditioner context
- ***scale -*** scaling factor for the Schur complement



## Options Database Key

- ***-pc_fieldsplit_schur_scale -*** default is -1.0





## See Also
 `PCFIELDSPLIT`, `PCFieldSplitSetFields()`, `PCFieldSplitSchurFactType`, `PCFieldSplitSetSchurScale()`, `PCFieldSplitSetSchurFactType()`

## Level
intermediate

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

## Implementations

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


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