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


## Input Parameter

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



## Output Parameter

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


Note: A simple dual space is provided automatically, and the user typically will not need to override it.




## See Also
 `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)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
