PETSc version 3.17.4
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# TaoADMMSetMisfitHessianRoutine

Sets the user-defined misfit Hessian call-back function into the algorithm, to be used for subsolverX.

### Synopsis

    #include "petsctao.h"
    PetscErrorCode TaoADMMSetMisfitHessianRoutine(Tao tao, Mat H, Mat Hpre, PetscErrorCode (*func)(Tao, Vec, Mat, Mat, void*), void *ctx)

Collective on tao

### Input Parameters

| tao | - the Tao context
| H | - user-created matrix for the Hessian of the misfit term
| Hpre | - user-created matrix for the preconditioner of Hessian of the misfit term
| func | - function pointer for the misfit Hessian evaluation
| ctx | - user context for the misfit Hessian

### See Also

TAOADMM

### Level

advanced

### Location

src/tao/constrained/impls/admm/admm.c

### Examples

src/tao/constrained/tutorials/tomographyADMM.c.html
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