# SNESLineSearchComputeNorms
Computes the norms of X, F, and Y. 
## Synopsis
```
#include "petscsnes.h" 
PetscErrorCode SNESLineSearchComputeNorms(SNESLineSearch linesearch)
```

## Input Parameters

- ***linesearch -*** linesearch context



## Options Database Keys

- ***-snes_linesearch_norms -*** turn norm computation on or off





## See Also
 `SNESLineSearch`, `SNESLineSearchGetNorms`, `SNESLineSearchSetNorms()`, `SNESLineSearchSetComputeNorms()`

## Level
intermediate

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


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