:orphan:
# MatISStoreL2L
Store local-to-local operators during the Galerkin process of computing `MatPtAP()` 
## Synopsis
```
#include "petscmat.h" 
PetscErrorCode MatISStoreL2L(Mat A, PetscBool store)
```
Collective


## Input Parameters

- ***A -*** the matrix
- ***store -*** the boolean flag





## See Also
 [](ch_matrices), `Mat`, `MatCreate()`, `MatCreateIS()`, `MatISSetPreallocation()`, `MatPtAP()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/is/matis.c.html#MatISStoreL2L">src/mat/impls/is/matis.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/mat/impls/is/matis.c.html#MatISStoreL2L_IS">MatISStoreL2L_IS in src/mat/impls/is/matis.c</A><BR>


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


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