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# MatHasCongruentLayouts
Determines whether the rows and columns layouts of the matrix are congruent 
## Synopsis
```
#include "petscmat.h" 
PetscErrorCode MatHasCongruentLayouts(Mat mat, PetscBool *cong)
```
Collective


## Input Parameter

- ***mat -*** the matrix



## Output Parameter

- ***cong -*** either `PETSC_TRUE` or `PETSC_FALSE`





## See Also
 [](ch_matrices), `Mat`, `MatCreate()`, `MatSetSizes()`, `PetscLayout`

## Level
beginner

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


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