openmpi/ompi/mpi/man/man3/MPI_Get_version.3

.\"Copyright 2006, Sun Microsystems, Inc.
.\" Copyright (c) 1996 Thinking Machines Corporation
.TH MPI_Get_version 3OpenMPI "September 2006" "Open MPI 1.2" " "
.SH NAME
\fBMPI_Get_version\fP \- Returns the version of the standard corresponding to the current implementation. 

.SH SYNTAX
.ft R
.SH C Syntax
.nf
#include <mpi.h>
int MPI_Get_version(int \fI*version\fP, int \fI*subversion\fP)

.SH Fortran Syntax
.nf
INCLUDE 'mpif.h'
MPI_GET_VERSION(\fIVERSION\fP, \fISUBVERSION\fP, \fIIERROR\fP)
	INTEGER	\fIVERSION\fP, \fISUBVERSION\fP, \fIIERROR\fP 

.SH C++ Syntax
.nf
#include <mpi.h>
void Get_version(int& \fIversion\fP, int& \fIsubversion\fP)

.SH OUTPUT PARAMETERS
.ft R
.TP 1i
version
The major version number of the corresponding standard (integer).

.ft R
.TP 1i
subversion
The minor version number of the corresponding standard (integer).

.ft R
.TP 1i
IERROR
Fortran only: Error status (integer). 

.SH DESCRIPTION
.ft R
Since Open MPI is MPI 2.0 compliant, this function will return a version value of 2 and a subversion value of 0 for this release. 

.SH NOTE
.ft R
MPI_Get_version is one of the few functions that can be called before MPI_Init and after MPI_Finalize. 

.SH ERRORS
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI:Exception object.
.sp
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.