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# PetscViewerHDF5GetSPOutput
Data is written to disk in single precision even if PETSc is compiled with double precision `PetscReal`. 
## Synopsis
```
#include "petscviewerhdf5.h" 
PetscErrorCode PetscViewerHDF5GetSPOutput(PetscViewer viewer, PetscBool *flg)
```
Logically Collective


## Input Parameter

- ***viewer -*** the PetscViewer, must be of type `PETSCVIEWERHDF5`



## Output Parameter

- ***flg -*** if `PETSC_TRUE` the data will be written to disk with single precision





## See Also
 [](sec_viewers), `PetscViewerFileSetMode()`, `PetscViewerCreate()`, `PetscViewerSetType()`, `PetscViewerBinaryOpen()`,
`PetscReal`, `PetscViewerHDF5SetSPOutput()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/viewer/impls/hdf5/hdf5v.c.html#PetscViewerHDF5GetSPOutput">src/sys/classes/viewer/impls/hdf5/hdf5v.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/classes/viewer/impls/hdf5/hdf5v.c)


[Index of all Viewer routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)