osx man page for mpi_type_extent

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)