# SNESLineSearchAppendOptionsPrefix
Appends to the prefix used for searching for all `SNESLineSearch` options in the database. 
## Synopsis
```
#include "petscsnes.h" 
PetscErrorCode SNESLineSearchAppendOptionsPrefix(SNESLineSearch linesearch, const char prefix[])
```
Logically Collective on linesearch


## Input Parameters

- ***linesearch -*** the `SNESLineSearch` context
- ***prefix -*** the prefix to prepend to all option names



## Note
A hyphen (-) must NOT be given at the beginning of the prefix name.
The first character of all runtime options is AUTOMATICALLY the hyphen.




## See Also
 `SNESLineSearch()`, `SNESLineSearchSetFromOptions()`, `SNESGetOptionsPrefix()`

## Level
advanced

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


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


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