osx man page for mpi_op_free

MPI_Op_free(3OpenMPI)													     MPI_Op_free(3OpenMPI)

NAME
       MPI_Op_free - Frees a user-defined combination function handle.

SYNTAX
C Syntax
       #include <mpi.h>
       int MPI_Op_free(MPI_Op *op)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_OP_FREE(OP, IERROR)
	    INTEGER   OP, IERROR

C++ Syntax
       #include <mpi.h>
       void Op::Free()

INPUT
/OUTPUT PARAMETER
       op	 Operation (handle).

OUTPUT PARAMETER
       IERROR	 Fortran only: Error status (integer).

DESCRIPTION
       Marks a user-defined reduction operation for deallocation and sets op to MPI_OP_NULL.

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++ func-
       tions 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.

       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_Op_create
       MPI_Reduce
       MPI_Allreduce
       MPI_Reduce_scatter
       MPI_Scan

Open MPI 1.2							  September 2006					     MPI_Op_free(3OpenMPI)