# KSPSetPostSolve
Sets a function that is called at the end of each `KSPSolve()` (whether it converges or not) 
## Synopsis
```
#include "petscksp.h" 
PetscErrorCode KSPSetPostSolve(KSP ksp, PetscErrorCode (*postsolve)(KSP, Vec, Vec, void *), void *postctx)
```
Logically Collective


## Input Parameters

- ***ksp -*** the solver object
- ***postsolve -*** the function to call after the solve
- ***postctx -*** any context needed by the function



## Calling sequence of postsolve
```none
func(KSP ksp,Vec rhs,Vec x,void *ctx)
```


- ***ksp -*** the `KSP` context
- ***rhs -*** the right-hand side vector
- ***x -*** the solution vector
- ***ctx -*** optional user-provided context





## See Also
 `KSPSetUp()`, `KSPSolve()`, `KSPDestroy()`, `KSP`, `KSPSetPreSolve()`, `PCEISENSTAT`

## Level
developer

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