SYNTAX
------

C Syntax
^^^^^^^^

.. code-block:: c

    double MPI_Wtime(void)

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

.. code-block:: fortran

    USE MPI
    ! or the older form: INCLUDE 'mpif.h'
    DOUBLE PRECISION MPI_WTIME()

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

.. code-block:: fortran

    USE mpi_f08
    DOUBLE PRECISION MPI_Wtime()
