:orphan:
# PetscObjectBaseTypeCompare
Determines whether a `PetscObject` is of a given base type. For example the base type of `MATSEQAIJPERM` is `MATSEQAIJ`
## Synopsis
```
#include "petscsys.h"
PetscErrorCode PetscObjectBaseTypeCompare(PetscObject obj, const char type_name[], PetscBool *same)
```
Not Collective
## Input Parameters
- ***mat -*** the matrix
- ***type_name -*** string containing a type name
## Output Parameter
- ***same -*** `PETSC_TRUE` if it is of the same base type
## See Also
`PetscObject`, `PetscObjectTypeCompare()`, `PetscObjectTypeCompareAny()`, `PetscObjectBaseTypeCompareAny()`
## Level
intermediate
## Location
src/sys/objects/destroy.c
## Examples
src/mat/tutorials/ex18.c
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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/objects/destroy.c)
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