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# DMDATSRHSJacobianLocalFn

A prototype of a local residual evaluation function for use with `DMDA` that would be passed to `DMDATSSetRHSJacobianLocal()`

## Synopsis

    #include <petscts.h>
    PETSC_EXTERN_TYPEDEF typedef PetscErrorCode DMDATSRHSJacobianLocalFn(DMDALocalInfo *info, PetscReal t, void *x, Mat J, Mat B, void *ctx);

## Calling Sequence

- info - defines the subdomain to evaluate the residual on

- t - time at which to evaluate residual

- x - array of local state information

- J - Jacobian matrix

- B - matrix from which to construct the preconditioner; often same as `J`

- ctx - optional context

## Note

The deprecated `DMDATSRHSJacobianLocal` still works as a replacement for `DMDATSRHSJacobianLocalFn` *.

## See Also

`DMDA`, `DMDATSSetRHSJacobianLocal()`, `TSRHSJacobianFn`, `DMDATSRHSFunctionLocalFn`, `DMDATSIJacobianLocalFn`, `DMDATSIFunctionLocalFn`

## Level

beginner

## Location

include/petscts.h

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