SYNTAX
------

C Syntax
^^^^^^^^

.. code-block:: c

    int MPI_Comm_size(MPI_Comm comm, int* size)

Fortran Syntax
^^^^^^^^^^^^^^

.. code-block:: fortran

    USE MPI
    ! or the older form: INCLUDE 'mpif.h'
    MPI_COMM_SIZE(COMM, SIZE, IERROR)
    	INTEGER COMM, SIZE, IERROR

Fortran 2008 Syntax
^^^^^^^^^^^^^^^^^^^

.. code-block:: fortran

    USE mpi_f08
    MPI_Comm_size(comm, size, ierror)
    	TYPE(MPI_Comm), INTENT(IN) :: comm
    	INTEGER, INTENT(OUT) :: size
    	INTEGER, OPTIONAL, INTENT(OUT) :: ierror
