/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */

/*  

 *  (C) 2004 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include "create_f90_util.h"

#include "mpiimpl.h"

#ifdef HAVE_FC_TYPE_ROUTINES

#include "mpif90model.h"

#else

/* Assume only 4 byte integers available */

#define MPIR_F90_INTEGER_MODEL_MAP { 9, 4, 4 },

#endif

/* -- Begin Profiling Symbol Block for routine MPI_Type_create_f90_integer */

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Type_create_f90_integer = PMPI_Type_create_f90_integer

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Type_create_f90_integer  MPI_Type_create_f90_integer

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Type_create_f90_integer as PMPI_Type_create_f90_integer

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Type_create_f90_integer(int range, MPI_Datatype *newtype) __attribute__((weak,alias("PMPI_Type_create_f90_integer")));

#endif

/* -- End Profiling Symbol Block */

/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build

   the MPI routines.  You can use USE_WEAK_SYMBOLS to see if MPICH is

   using weak symbols to implement the MPI routines. */

#ifndef MPICH_MPI_FROM_PMPI

#define MPI_Type_create_f90_integer PMPI_Type_create_f90_integer

#endif

typedef struct intModel {

    int range, kind, bytes; } intModel;

#undef FUNCNAME

#define FUNCNAME MPI_Type_create_f90_integer

/*@

   MPI_Type_create_f90_integer - Return a predefined type that matches 

   the specified range

Input Parameters:

.  range - Decimal range (number of digits) desired

Output Parameters:

.  newtype - A predefine MPI Datatype that matches the range.

   Notes:

If there is no corresponding type for the specified range, the call is 

erroneous.  This implementation sets 'newtype' to 'MPI_DATATYPE_NULL' and

returns an error of class 'MPI_ERR_ARG'.

.N Fortran

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_ARG

@*/

int MPI_Type_create_f90_integer( int range, MPI_Datatype *newtype )

{

    static const char FCNAME[] = "MPI_Type_create_f90_integer";

    int i, bytes;

    int mpi_errno = MPI_SUCCESS;

    MPI_Datatype basetype = MPI_DATATYPE_NULL;

    static intModel f90_integer_map[] = { MPIR_F90_INTEGER_MODEL_MAP

					  {0, 0, 0 } };

    MPID_MPI_STATE_DECL(MPID_STATE_MPI_TYPE_CREATE_F90_INTEGER);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_TYPE_CREATE_F90_INTEGER);

    /* ... body of routine ...  */

    for (i=0; f90_integer_map[i].range > 0; i++) {

	if (f90_integer_map[i].range >= range) {

	    /* Find the corresponding INTEGER type */

	    bytes = f90_integer_map[i].bytes;

	    switch (bytes) {

	    case 1: basetype = MPI_INTEGER1; break;

	    case 2: basetype = MPI_INTEGER2; break;

	    case 4: basetype = MPI_INTEGER4; break;

	    case 8: basetype = MPI_INTEGER8; break;

	    default: break;

	    }

	    break;

	}

    }

    if (basetype == MPI_DATATYPE_NULL) {

	mpi_errno = MPIR_Err_create_code( MPI_SUCCESS, MPIR_ERR_RECOVERABLE,

					  "MPI_Type_create_f90_integer",

					  __LINE__, MPI_ERR_OTHER,

 					  "**f90typeintnone", 

					  "**f90typeintnone %d", range );

    }

    else {

	mpi_errno = MPIR_Create_unnamed_predefined( basetype, 

			    MPI_COMBINER_F90_INTEGER, range, -1, newtype );

    }

    if (mpi_errno) goto fn_fail;

    /* ... end of body of routine ... */

 fn_exit:

    MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_TYPE_CREATE_F90_INTEGER);

    MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    return mpi_errno;

 fn_fail:

    /* --BEGIN ERROR HANDLING-- */

#   ifdef HAVE_ERROR_CHECKING

    {

	mpi_errno = MPIR_Err_create_code(

	    mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**mpi_type_create_f90_int",

	    "**mpi_type_create_f90_int %d", range );

    }

#   endif

    mpi_errno = MPIR_Err_return_comm( 0, FCNAME, mpi_errno );

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}