NAME

       MPI_Get_library_version - Returns a string of the current Open MPI version

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Get_library_version(char *version, int *resultlen)

Fortran Syntax

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_GET_LIBRARY_VERSION(VERSION, RESULTLEN, IERROR)
            CHARACTER*(*)  NAME
            INTEGER RESULTLEN, IERROR

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Get_library_version(version, resulten, ierror)
            CHARACTER(LEN=MPI_MAX_LIBRARY_VERSION_STRING), INTENT(OUT) :: version
            INTEGER, INTENT(OUT) :: resultlen
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

C++ Syntax

       There is no C++ binding for this function.

OUTPUT PARAMETERS

       version   A string containing the Open MPI version (string).

       resultlen Length (in characters) of result returned in version (integer).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       This  routine  returns  a  string  representing the version of the MPI library. The version argument is a
       character string for maximum flexibility.

       The number of characters actually written is returned in the output argument, resultlen.  In  C,  a  '\0'
       character   is   additionally   stored  at  version[resultlen].  The  resultlen  cannot  be  larger  than
       (MPI_MAX_LIBRARY_VERSION_STRING - 1). In Fortran, version is padded on the right with  blank  characters.
       The resultlen cannot be larger than MPI_MAX_LIBRARY_VERSION_STRING.

NOTE

       The version string that is passed must be at least MPI_MAX_LIBRARY_VERSION_STRING characters long.

       MPI_Get_library_version  is  one  of  the  few  functions  that  can  be called before MPI_Init and after
       MPI_Finalize.

       MPI_Get_library_version is an MPI-3 function and has no C++ binding.

ERRORS

       Almost all MPI routines return an error value; C routines as  the  value  of  the  function  and  Fortran
       routines in the last argument.

       Before  the  error  value  is  returned,  the current MPI error handler is called. By default, this error
       handler aborts the MPI job, except for I/O function  errors.  The  error  handler  may  be  changed  with
       MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values
       to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

SEE ALSO

       MPI_Get_version