.. _mpi_t_category_get_num:


MPI_T_category_get_num
======================

.. include_body

:ref:`MPI_T_category_get_num` |mdash| Query the number of categories

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.. include:: ./bindings/mpi_t_category_get_num.rst

OUTPUT PARAMETERS
-----------------
* ``num_cat``: Current number of categories

DESCRIPTION
-----------

:ref:`MPI_T_category_get_num` can be used to query the current number of
categories.


ERRORS
------

:ref:`MPI_T_category_get_num` will fail if:

* ``MPI_T_ERR_NOT_INITIALIZED``: The MPI Tools interface not initialized