# MatDestroySubMatrices
Destroys a set of matrices obtained with `MatCreateSubMatrices()`. 
## Synopsis
```
#include "petscmat.h" 
PetscErrorCode MatDestroySubMatrices(PetscInt n, Mat *mat[])
```
Collective


## Input Parameters

- ***n -*** the number of local matrices
- ***mat -*** the matrices (note that this is a pointer to the array of matrices, just to match the calling
sequence of MatCreateSubMatrices())





## Note
Frees not only the matrices, but also the array that contains the matrices


## Fortran Note
Will not free the array.


## See Also
 `Mat`, `MatCreateSubMatrices()`, `MatDestroyMatrices()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/interface/matrix.c.html#MatDestroySubMatrices">src/mat/interface/matrix.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/aij/seq/aij.c.html#MatDestroySubMatrices_SeqAIJ">MatDestroySubMatrices_SeqAIJ in src/mat/impls/aij/seq/aij.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/baij/seq/baij2.c.html#MatDestroySubMatrices_SeqBAIJ">MatDestroySubMatrices_SeqBAIJ in src/mat/impls/baij/seq/baij2.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/dummy/matdummy.c.html#MatDestroySubMatrices_Dummy">MatDestroySubMatrices_Dummy in src/mat/impls/dummy/matdummy.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/mat/interface/matrix.c)


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