MPIOpfree(3OpenMPI) MPIOpfree(3OpenMPI)

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


SSYYNNTTAAXX
CC SSyynnttaaxx
       #include 
       int MPIOpfree(MPIOp *op)


FFoorrttrraann SSyynnttaaxx
       INCLUDE 'mpif.h'
       MPIOPFREE(OP, IERROR)
            INTEGER   OP, IERROR


CC++++ SSyynnttaaxx
       #include 
       void Op::Free()


IINNPPUUTT//OOUUTTPPUUTT PPAARRAAMMEETTEERR
       op        Operation (handle).


OOUUTTPPUUTT PPAARRAAMMEETTEERR
       IERROR    Fortran only: Error status (integer).


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


EERRRROORRSS
       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::ERRORSTHROWEXCEPTIONS, 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
       MPICommseterrhandler; the predefined error handler MPIERRORSRETURN
       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
       MPIOpcreate
       MPIReduce
       MPIAllreduce
       MPIReducescatter
       MPIScan




Open MPI 1.2                    September 2006           MPIOpfree(3OpenMPI)