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# DMKSPSetComputeInitialGuess
set `KSP` initial guess evaluation function 
## Synopsis
```
#include "petscksp.h" 
PetscErrorCode DMKSPSetComputeInitialGuess(DM dm, PetscErrorCode (*func)(KSP, Vec, void *), void *ctx)
```
Not Collective


## Input Parameters

- ***dm -*** `DM` to be used with `KSP`
- ***func -*** initial guess evaluation function,  for calling sequence see `KSPSetComputeInitialGuess()`
- ***ctx -*** context for right hand side evaluation





## Note
`KSPSetComputeInitialGuess()` is normally used, but it calls this function internally because the user context is actually
associated with the `DM`.


## See Also
 [](ch_ksp), `DMKSP`, `DM`, `KSP`, `DMKSPSetContext()`, `DMKSPGetComputeRHS()`, `KSPSetRHS()`

## Level
developer

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


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


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