MPITypehvector(3OpenMPI) MPITypehvector(3OpenMPI)

NAME
       MMPPIITTyyppeehhvveeccttoorr  -  Creates a vector (strided) datatype with offset in
       bytes - use of this routine is deprecated.


SSYYNNTTAAXX
CC SSyynnttaaxx
       #include 
       int MPITypehvector(int count, int blocklength, MPIAint stride,
            MPIDatatype oldtype, MPIDatatype *newtype)


FFoorrttrraann SSyynnttaaxx
       INCLUDE 'mpif.h'
       MPITYPEHVECTOR(COUNT, BLOCKLENGTH, STRIDE, OLDTYPE, NEWTYPE,
                 IERROR)
            INTEGER   COUNT, BLOCKLENGTH, STRIDE, OLDTYPE
            INTEGER   NEWTYPE, IERROR


IINNPPUUTT PPAARRAAMMEETTEERRSS
       count     Number of blocks (nonnegative integer).

       blocklength
                 Number of elements in each block (nonnegative integer).

       stride    Number of bytes between start of each block (integer).

       oldtype   Old datatype (handle).


OOUUTTPPUUTT PPAARRAAMMEETTEERRSS
       newtype   New datatype (handle).

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       Note  that  use  of  this  routine  is  deprecated  as  of  MPI-2.  Use
       MPITypecreatehvector instead.

       This deprecated routine is not available in C++.

       The  function  MPITypehvector is identical to MPITypevector, except
       that stride is given in bytes, rather than in  elements.  The  use  for
       both  types  of  vector  constructors is illustrated in the examples in
       Section 3.12.7 of the MPI-1 Standard.

       Assume that oldtype has type map

           {(type(0), disp(0)), ..., (type(n-1), disp(n-1))}

       with extent ex. Let bl be the blocklength. The newly  created  datatype
       has a type map with   count * bl * n  entries:

         {(type(0), disp(0)), ..., (type(n-1), disp(n-1)),
         (type(0), disp(0) + ex), ..., (type(n-1), disp(n-1) + ex),
         ..., (type(0), disp(0) + (bl -1) * ex),...,(type(n-1),
         disp(n-1) + (bl -1) * ex), (type(0), disp(0) + stride),
         ...,(type(n-1), disp(n-1) + stride), ..., (type(0),
         disp(0) + stride + (bl - 1) * ex), ..., (type(n-1),
         disp(n-1) + stride + (bl -1) * ex), ..., (type(0),
         disp(0) + stride * (count -1)), ...,(type(n-1),
         disp(n-1) + stride * (count -1)), ..., (type(0),
         disp(0) + stride * (count -1) + (bl -1) * ex), ...,
         (type(n-1), disp(n-1) + stride * (count -1) + (bl -1) * ex)}


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
       MPITypecreatehvector
       MPITypevector




Open MPI 1.2                    September 2006      MPITypehvector(3OpenMPI)