mpi_type_extent(3openmpi) [osx man page]

MPI_Type_extent(3OpenMPI)												 MPI_Type_extent(3OpenMPI)

NAME

       MPI_Type_extent - Returns the extent of a data type, the difference between the upper and lower bounds of the data type -- use of this rou-
       tine is deprecated.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Type_extent(MPI_Datatype datatype, MPI_Aint *extent)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_TYPE_EXTENT(DATATYPE, EXTENT, IERROR)
	    INTEGER   DATATYPE, EXTENT, IERROR

INPUT PARAMETER

       datatype  Datatype (handle).

OUTPUT PARAMETERS

       extent	 Datatype extent (integer).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       Note that use of this routine is deprecated as of MPI-2. Please use MPI_Type_get_extent instead.

       This deprecated routine is not available in C++.

       MPI_Type_extent returns the extent of a data type, the difference between the upper and lower bounds of the data type.

       In general, if

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

       then the lower bound of Typemap is defined to be

		     ( min(j) disp(j)			      if no entry has
	 lb(Typemap)=(					      basic type lb
		     (min(j) {disp(j) such that type(j) = lb} otherwise

       Similarly, the upper bound of Typemap is defined to be

		     (max(j) disp(j) + sizeof(type(j)) + e    if no entry has
	 ub(Typemap)=(					      basic type ub
		     (max(j) {disp(j) such that type(j) = ub} otherwise

       Then

	   extent(Typemap) = ub(Typemap) - lb(Typemap)

       If type(i) requires alignment to a byte address that is a multiple of k(i), then e is the  least  nonnegative  increment  needed  to  round
       extent(Typemap) to the next multiple of max(i) k(i).

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_Type_get_extent

Open MPI 1.2							  September 2006					 MPI_Type_extent(3OpenMPI)

MPI_Type_hindexed(3OpenMPI)											       MPI_Type_hindexed(3OpenMPI)

NAME

       MPI_Type_hindexed - Creates an indexed datatype with offsets in bytes -- use of this routine is deprecated.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Type_hindexed(int count, int *array_of_blocklengths,
	    MPI_Aint *array_of_displacements, MPI_Datatype oldtype,
	    MPI_Datatype *newtype)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_TYPE_HINDEXED(COUNT, ARRAY_OF_BLOCKLENGTHS,
		 ARRAY_OF_DISPLACEMENTS, OLDTYPE, NEWTYPE, IERROR)
	    INTEGER   COUNT, ARRAY_OF_BLOCKLENGTHS(*)
	    INTEGER   ARRAY_OF_DISPLACEMENTS(*), OLDTYPE, NEWTYPE
	    INTEGER   IERROR

INPUT PARAMETERS

       count	 Number of blocks -- also number of entries in array_of_displacements  and array_of_blocklengths  (integer).

       array_of_blocklengths
		 Number of elements in each block (array of nonnegative integers).

       array_of_displacements
		 Byte displacement of each block (array of integer).

       oldtype	 Old datatype (handle).

OUTPUT PARAMETERS

       newtype	 New datatype (handle).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

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

       This deprecated routine is not available in C++.

       The  function  is  identical  to MPI_Type_indexed, except that block displacements in array_of_displacements are specified in bytes, rather
       than in multiples of the oldtype extent.

       Assume that oldtype has type map

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

       with extent ex. Let B be the array_of_blocklength argument and D be the array_of_displacements argument. The newly created datatype has
       n x S^count-1
	   (i=0)	B[i]  entries:

	 {(type(0), disp(0) + D[0]),...,(type(n-1), disp(n-1) + D[0]),...,
	 (type(0), disp(0) + (D[0] + B[0]-1)* ex),...,
	 type(n-1), disp(n-1) + (D[0]+ B[0]-1)* ex),...,
	 (type(0), disp(0) + D[count-1]),...,(type(n-1), disp(n-1) + D[count-1]),...,
	 (type(0), disp(0) +  D[count-1] + (B[count-1] -1)* ex),...,
	 (type(n-1), disp(n-1) + D[count-1] + (B[count-1] -1)* ex)}

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_Type_create_hindexed
       MPI_Type_indexed

Open MPI 1.2							  September 2006				       MPI_Type_hindexed(3OpenMPI)