# DAAppGetHessianMat

Sets a pointer to an existing matrix that contains the Hessian at the specified level.

## Synopsis

    #include "taodaapplication.h"
    int DAAppGetHessianMat(TAO_APPLICATION daapplication, int level, Mat *H)

Collective on TAO_APPLICATION

## Input Parameters

| daapplication | - the DA Application object
| level | - the DA on which the current Hessian is desired (Level 0 is coarsest)

## Output Parameters

H -the current Hessian

## See Also

DAAppSetHessianRoutine;

## Keywords

Hessian, DA

Level:intermediate
Location:src/petsctao/gridapplication/interface/daapp.c
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