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# TaoSetMaximumFunctionEvaluations
Sets a maximum number of function evaluations allowed for a `TaoSolve()`. 
## Synopsis
```
#include "petsctao.h" 
PetscErrorCode TaoSetMaximumFunctionEvaluations(Tao tao, PetscInt nfcn)
```
Logically Collective


## Input Parameters

- ***tao -*** the `Tao` solver context
- ***nfcn -*** the maximum number of function evaluations (>=0)



## Options Database Key

- ***-tao_max_funcs <nfcn> -*** sets the maximum number of function evaluations





## See Also
 [](ch_tao), `Tao`, `TaoSetTolerances()`, `TaoSetMaximumIterations()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/interface/taosolver.c.html#TaoSetMaximumFunctionEvaluations">src/tao/interface/taosolver.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/constrained/tutorials/ex1.c.html">src/tao/constrained/tutorials/ex1.c</A><BR>


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