:orphan:
# TaoADMMSetRegularizerConstraintJacobian
Set the constraint matrix B for `TAOADMM` algorithm. Matrix B constraints z variable. 
## Synopsis
```
#include "petsctao.h" 
PetscErrorCode TaoADMMSetRegularizerConstraintJacobian(Tao tao, Mat J, Mat Jpre, PetscErrorCode (*func)(Tao, Vec, Mat, Mat, void *), void *ctx)
```
Collective


## Input Parameters

- ***tao -*** the `Tao` solver context
- ***J -*** user-created regularizer constraint Jacobian matrix
- ***Jpre -*** user-created regularizer Jacobian constraint matrix for constructing the preconditioner, often this is `J`
- ***func -*** function pointer for the regularizer constraint Jacobian update function
- ***ctx -*** user context for the regularizer Hessian





## See Also
 `TaoADMMSetRegularizerCoefficient()`, `TaoADMMSetMisfitConstraintJacobian()`, `TAOADMM`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/constrained/impls/admm/admm.c.html#TaoADMMSetRegularizerConstraintJacobian">src/tao/constrained/impls/admm/admm.c</A>

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


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/tao/constrained/impls/admm/admm.c)


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