:orphan:
# TaoLineSearchComputeGradient
Computes the gradient of the objective function 
## Synopsis
```
#include "petsctaolinesearch.h" 
PetscErrorCode TaoLineSearchComputeGradient(TaoLineSearch ls, Vec x, Vec g)
```
Collective


## Input Parameters

- ***ls -*** the `TaoLineSearch` context
- ***x -*** input vector



## Output Parameter

- ***g -*** gradient vector





## Note
`TaoComputeGradient()` is typically used within line searches
so most users would not generally call this routine themselves.


## See Also
 [](ch_tao), `Tao`, `TaoLineSearch`, `TaoLineSearchComputeObjective()`, `TaoLineSearchComputeObjectiveAndGradient()`, `TaoLineSearchSetGradient()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/linesearch/interface/taolinesearch.c.html#TaoLineSearchComputeGradient">src/tao/linesearch/interface/taolinesearch.c</A>


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


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