# PetscExpandToNothing
Expands to absolutely nothing at all 
## Synopsis
```
#include <petscmacros.h>
void PetscExpandToNothing(...)
```

## Input Parameter

- ***__VA_ARGS__ -*** Anything at all



## Notes
Not available from Fortran, requires variadic macro support, definition is disabled by
defining `PETSC_SKIP_VARIADIC_MACROS`.

Must have at least 1 parameter.


## Example usage
```none
  PetscExpandToNothing(a,b,c) -> *nothing*
```





## See Also
 `PetscConcat()`, `PetscDefined()`, `PetscStringize()`, `PetscExpand()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscmacros.h.html#PetscExpandToNothing">include/petscmacros.h</A>


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