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# PCBDDCMatFETIDPGetRHS
Compute the right-hand side for a FETI-DP linear system using the physical right-hand side 
## Synopsis
```
#include "petscpc.h" 
PetscErrorCode PCBDDCMatFETIDPGetRHS(Mat fetidp_mat, Vec standard_rhs, Vec fetidp_flux_rhs)
```
Collective


## Input Parameters

- ***fetidp_mat      -*** the FETI-DP matrix object obtained by a call to `PCBDDCCreateFETIDPOperators()`
- ***standard_rhs    -*** the right-hand side of the original linear system



## Output Parameter

- ***fetidp_flux_rhs -*** the right-hand side for the FETI-DP linear system





## See Also
 `PCBDDC`, `PCBDDCCreateFETIDPOperators()`, `PCBDDCMatFETIDPGetSolution()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/bddc/bddc.c.html#PCBDDCMatFETIDPGetRHS">src/ksp/pc/impls/bddc/bddc.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex59.c.html">src/ksp/ksp/tutorials/ex59.c</A><BR>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/bddc/bddc.c.html#PCBDDCMatFETIDPGetRHS_BDDC">PCBDDCMatFETIDPGetRHS_BDDC in src/ksp/pc/impls/bddc/bddc.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ksp/pc/impls/bddc/bddc.c)


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