/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Copyright by the Board of Trustees of the University of Illinois. * * All rights reserved. * * * * This file is part of HDF5. The full HDF5 copyright notice, including * * terms governing use, modification, and redistribution, is contained in * * the files COPYING and Copyright.html. COPYING can be found at the root * * of the source code distribution tree; Copyright.html can be found at the * * root level of an installed copy of the electronic HDF5 document set and * * is linked from the top-level documents page. It can also be found at * * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have * * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /* * Module Info: This module contains the functionality for setting & querying * the datatype byte order for the H5T interface. */ #define H5T_PACKAGE /*suppress error about including H5Tpkg */ /* Interface initialization */ #define H5_INTERFACE_INIT_FUNC H5T_init_order_interface #include "H5private.h" /* Generic Functions */ #include "H5Eprivate.h" /* Error handling */ #include "H5Iprivate.h" /* IDs */ #include "H5Tpkg.h" /* Datatypes */ /*-------------------------------------------------------------------------- NAME H5T_init_order_interface -- Initialize interface-specific information USAGE herr_t H5T_init_order_interface() RETURNS Non-negative on success/Negative on failure DESCRIPTION Initializes any interface-specific data or routines. (Just calls H5T_init_iterface currently). --------------------------------------------------------------------------*/ static herr_t H5T_init_order_interface(void) { FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5T_init_order_interface) FUNC_LEAVE_NOAPI(H5T_init()) } /* H5T_init_order_interface() */ /*------------------------------------------------------------------------- * Function: H5Tget_order * * Purpose: Returns the byte order of a data type. * * Return: Success: A byte order constant * * Failure: H5T_ORDER_ERROR (Negative) * * Programmer: Robb Matzke * Wednesday, January 7, 1998 * * Modifications: * Robb Matzke, 22 Dec 1998 * Also works for derived data types. * *------------------------------------------------------------------------- */ H5T_order_t H5Tget_order(hid_t type_id) { H5T_t *dt = NULL; H5T_order_t ret_value; FUNC_ENTER_API(H5Tget_order, H5T_ORDER_ERROR) H5TRACE1("To","i",type_id); /* Check args */ if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5T_ORDER_ERROR, "not a data type") while (dt->shared->parent) dt = dt->shared->parent; /*defer to parent*/ if (!H5T_IS_ATOMIC(dt->shared)) HGOTO_ERROR(H5E_DATATYPE, H5E_UNSUPPORTED, H5T_ORDER_ERROR, "operation not defined for specified data type") /* Order */ ret_value = dt->shared->u.atomic.order; done: FUNC_LEAVE_API(ret_value) } /*------------------------------------------------------------------------- * Function: H5Tset_order * * Purpose: Sets the byte order for a data type. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Wednesday, January 7, 1998 * * Modifications: * Robb Matzke, 22 Dec 1998 * Also works for derived data types. * *------------------------------------------------------------------------- */ herr_t H5Tset_order(hid_t type_id, H5T_order_t order) { H5T_t *dt = NULL; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_API(H5Tset_order, FAIL) H5TRACE2("e","iTo",type_id,order); /* Check args */ if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data type") if (H5T_STATE_TRANSIENT!=dt->shared->state) HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "data type is read-only") if (order < H5T_ORDER_LE || order > H5T_ORDER_NONE) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "illegal byte order") if (H5T_ENUM==dt->shared->type && dt->shared->u.enumer.nmembs>0) HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not allowed after members are defined") while (dt->shared->parent) dt = dt->shared->parent; /*defer to parent*/ if (!H5T_IS_ATOMIC(dt->shared)) HGOTO_ERROR(H5E_DATATYPE, H5E_UNSUPPORTED, FAIL, "operation not defined for specified data type") /* Commit */ dt->shared->u.atomic.order = order; done: FUNC_LEAVE_API(ret_value) }