MPITypegetextent(3OpenMPI) MPITypegetextent(3OpenMPI)

NAME
       MMPPIITTyyppeeggeetteexxtteenntt  -  Returns  the  lower  bound and extent of a data
       type.


SSYYNNTTAAXX
CC SSyynnttaaxx
       #include 
       int MPITypegetextent(MPIDatatype datatype, MPIAint *lb,
            MPIAint *extent)


FFoorrttrraann SSyynnttaaxx ((sseeee FFOORRTTRRAANN 7777 NNOOTTEESS))
       INCLUDE 'mpif.h'
       MPITYPEGETEXTENT(DATATYPE, LB, EXTENT, IERROR)
            INTEGER   DATATYPE, IERROR
            INTEGER(KIND=MPIADDRESSKIND) LB, EXTENT


CC++++ SSyynnttaaxx
       #include 
       void MPI::Datatype::Getextent(MPI::Aint& lb, MPI::Aint& extent)
            const


IINNPPUUTT PPAARRAAMMEETTEERR
       datatype  Data type (handle).


OOUUTTPPUUTT PPAARRAAMMEETTEERRSS
       lb        Lower bound of data type (integer).

       extent    Data type extent (integer).

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       MPITypegetextent returns the lower bound and the extent of datatype.


NNOOTTEE
       Use  of  MPITypegetextent is strongly recommended over the old MPI-1
       functions MPITypeextent and MPITypelb.


FFOORRTTRRAANN 7777 NNOOTTEESS
       The MPI standard prescribes portable Fortran  syntax  for  the  LB  and
       EXTENT arguments only for Fortran 90. FORTRAN 77 users may use the non-
       portable syntax

            INTEGER*MPIADDRESSKIND LB
       or
            INTEGER*MPIADDRESSKIND EXTENT

       where MPIADDRESSKIND is a constant defined in mpif.h  and  gives  the
       length of the declared integer in bytes.


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.





Open MPI 1.2                    September 2006   MPITypegetextent(3OpenMPI)