:orphan:
# SNESNewtonTRSetFallbackType
Set the type of fallback if the solution of the trust region subproblem is outside the radius 
## Synopsis
```
#include "petscsnes.h"   
PetscErrorCode SNESNewtonTRSetFallbackType(SNES snes, SNESNewtonTRFallbackType ftype)
```

## Input Parameters

- ***snes -*** the nonlinear solver object
- ***ftype -*** the fallback type, see `SNESNewtonTRFallbackType`





## See Also
 `SNESNEWTONTR`, `SNESNewtonTRPreCheck()`, `SNESNewtonTRGetPreCheck()`, `SNESNewtonTRSetPreCheck()`,
`SNESNewtonTRSetPostCheck()`, `SNESNewtonTRGetPostCheck()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/impls/tr/tr.c.html#SNESNewtonTRSetFallbackType">src/snes/impls/tr/tr.c</A>


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