MPI_Type_get_attr(3OpenMPI)											       MPI_Type_get_attr(3OpenMPI)

NAME

       MPI_Type_get_attr - Returns the attribute associated with a data type.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Type_get_attr(MPI_Datatype type, int type_keyval, void *attribute_val, int *flag)

Fortran Syntax (see FORTRAN 77 NOTES)
       INCLUDE 'mpif.h'
       MPI_TYPE_GET_ATTR(TYPE, TYPE_KEYVAL, ATTRIBUTE_VAL, FLAG, IERROR)
	    INTEGER   TYPE, TYPE_KEYVAL, IERROR
	    INTEGER(KIND=MPI_ADDRESS_KIND) ATTRIBUTE_VAL
	    LOGICAL FLAG

C++ Syntax
       #include <mpi.h>
       bool MPI::Datatype::Get_attr(int type_keyval, void* attribute_val) const

INPUT PARAMETERS

       type	 Data type to which the attribute is attached (handle).

       type_keyval
		 Key value (integer).

OUTPUT PARAMETERS

       attribute_val
		 Attribute value, unless flag = false

       flag	 "false" if no attribute is associated with the key (logical).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       For the given data type, MPI_Type_get_attr returns an attribute value that corresponds to the specified key value.

FORTRAN 77 NOTES
       The  MPI  standard prescribes portable Fortran syntax for the ATTRIBUTE_VAL argument only for Fortran 90.  Sun FORTRAN 77 users may use the
       non-portable syntax

	    INTEGER*MPI_ADDRESS_KIND ATTRIBUTE_VAL

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

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_set_attr

Open MPI 1.2							  September 2006				       MPI_Type_get_attr(3OpenMPI)