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MPI_TYPE_DUP_FN(3)			     LAM/MPI			       MPI_TYPE_DUP_FN(3)

NAME
       MPI_TYPE_DUP_FN -  Built-in MPI function to simple-mindedly copy datatype attributes.

SYNOPSIS
       #include <mpi.h>
       int MPI_TYPE_DUP_FN(MPI_Datatype dtype, int key,
	     void *extra, void *attrin, void *attrout,
	     int *flag)

INPUT PARAMETERS
       dtype  - communicator (handle)
       key    - key value (integer)
       extra  - extra state
       attrin - in value for attribute

OUTPUT PARAMETERS
       attrout
	      - out value for attribute
       flag   - 1 if attribute copied successfully, 0 otherwise (logical)

NOTES
       This  function  blindly byte-copies attributes on datatypes.  It is the default atrribute-
       copying function for datatypes.	This function will always return MPI_SUCCESS ,	and  flag
       will always be set to 1.

       The actual copy is performed by the code

       *((void **) attrout) = attrin;

       If this simple assignment is not sufficient for your attributes, you will need to reassign
       the attribute-copying function on relevant keyvals on  datatypes  with  the  MPI_Type_key-
       val_create function.

NOTES FOR FORTRAN
       All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have an additional argu-
       ment ierr at the end of the argument list.  ierr is an integer and has the same meaning as
       the  return  value of the routine in C.	In Fortran, MPI routines are subroutines, and are
       invoked with the call statement.

       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.

SEE ALSO
       MPI_Type_keyval_create

MORE INFORMATION
       For more information, please see the official MPI Forum web site, which contains the  text
       of both the MPI-1 and MPI-2 standards.  These documents contain detailed information about
       each MPI function (most of which is not duplicated in these man pages).

       http://www.mpi-forum.org/

ACKNOWLEDGEMENTS
       The LAM Team would like the thank the MPICH Team for the handy  program	to  generate  man
       pages  ("doctext"  from ftp://ftp.mcs.anl.gov/pub/sowing/sowing.tar.gz ), the initial for-
       matting, and some initial text for most of the MPI-1 man pages.

LOCATION
       dupfn.c

LAM/MPI 6.5.8				    11/10/2002			       MPI_TYPE_DUP_FN(3)
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