:orphan:
# SNESKSPGetUseEW
Gets if `SNES` is using Eisenstat-Walker method for computing relative tolerance for linear solvers within an inexact Newton method. 
## Synopsis
```
#include "petscsnes.h"  
PetscErrorCode SNESKSPGetUseEW(SNES snes, PetscBool *flag)
```
Not Collective


## Input Parameter

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



## Output Parameter

- ***flag -*** `PETSC_TRUE` or `PETSC_FALSE`





## See Also
 [](ch_snes), `SNESKSPSetUseEW()`, `SNESKSPGetParametersEW()`, `SNESKSPSetParametersEW()`

## Level
advanced

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


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[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)