:orphan:
# VecCheckAssembled
checks if values have been changed in the vector, by `VecSetValues()` or related routines,  but it has not been assembled 
## Synopsis
```
#include <petscvec.h>
VecCheckAssembled(Vec v);
```
Not Collective


## Input Parameter

- ***v -*** the vector to check





## Note
After calls to `VecSetValues()` and related routines on must call ``VecAssemblyBegin()` and `VecAssemblyEnd()` before using the vector


## See Also
 [](ch_vectors), `Vec`, `VecSetValues()`, `VecAssemblyBegin()`, `VecAssemblyEnd()`, `MatAssemblyBegin()`, `MatAssemblyEnd()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscvec.h.html#VecCheckAssembled">include/petscvec.h</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/include/petscvec.h)


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