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# SNESGetPicard
Returns the context for the Picard iteration 
## Synopsis
```
#include "petscsnes.h"  
PetscErrorCode SNESGetPicard(SNES snes, Vec *r, PetscErrorCode (**f)(SNES, Vec, Vec, void *), Mat *Amat, Mat *Pmat, PetscErrorCode (**J)(SNES, Vec, Mat, Mat, void *), void **ctx)
```
Not Collective, but `Vec` is parallel if `SNES` is parallel. Collective if `Vec` is requested, but has not been created yet.


## Input Parameter

- ***snes -*** the `SNES` context



## Output Parameters

- ***r -*** the function (or `NULL`)
- ***f -*** the function (or `NULL`);  for calling sequence see `SNESFunction`
- ***Amat -*** the matrix used to defined the operation A(x) x - b(x) (or `NULL`)
- ***Pmat  -*** the matrix from which the preconditioner will be constructed (or `NULL`)
- ***J -*** the function for matrix evaluation (or `NULL`);  for calling sequence see `SNESJacobianFunction`
- ***ctx -*** the function context (or `NULL`)





## See Also
 [](ch_snes), `SNESSetFunction()`, `SNESSetPicard()`, `SNESGetFunction()`, `SNESGetJacobian()`, `SNESGetDM()`, `SNESFunction`, `SNESJacobianFunction`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/interface/snes.c.html#SNESGetPicard">src/snes/interface/snes.c</A>


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


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