:orphan:
# PetscFVGetDualSpace
Returns the `PetscDualSpace` used to define the inner product on a `PetscFV` 
## Synopsis
```
#include "petscfv.h" 
PetscErrorCode PetscFVGetDualSpace(PetscFV fvm, PetscDualSpace *sp)
```
Not Collective


## Input Parameter

- ***fvm -*** The `PetscFV` object



## Output Parameter

- ***sp -*** The `PetscDualSpace` object





## Developer Note
There is overlap between the methods of `PetscFE` and `PetscFV`, they should probably share a common parent class


## See Also
 `PetscDualSpace`, `PetscFV`, `PetscFVCreate()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/dt/fv/interface/fv.c.html#PetscFVGetDualSpace">src/dm/dt/fv/interface/fv.c</A>


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[Index of all FV routines](index.md)  
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