# PCSetApplicationContext
Sets the optional user-defined context for the linear solver. 
## Synopsis
```
#include "petscpc.h" 
PetscErrorCode PCSetApplicationContext(PC pc, void *usrP)
```
Logically Collective


## Input Parameters

- ***pc -*** the PC context
- ***usrP -*** optional user context





## See Also
 `PCGetApplicationContext()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/interface/pcset.c.html#PCSetApplicationContext">src/ksp/pc/interface/pcset.c</A>


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