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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
* Thursday, May 15, 2003
*
* Purpose: This file contains declarations which are visible only within
* the H5I package. Source files outside the H5I package should
* include H5Iprivate.h instead.
*/
#ifndef H5I_PACKAGE
#error "Do not include this file outside the H5I package!"
#endif
#ifndef _H5Ipkg_H
#define _H5Ipkg_H
/* Get package's private header */
#include "H5Iprivate.h"
/* Other private headers needed by this file */
/**************************/
/* Package Private Macros */
/**************************/
/*
* Number of bits to use for Group ID in each atom. Increase if H5I_NGROUPS
* becomes too large (an assertion would fail in H5I_init_interface). This is
* the only number that must be changed since all other bit field sizes and
* masks are calculated from GROUP_BITS.
*/
#define GROUP_BITS 5
#define GROUP_MASK ((1<<GROUP_BITS)-1)
/*
* Number of bits to use for the Atom index in each atom (assumes 8-bit
* bytes). We don't use the sign bit.
*/
#define ID_BITS ((sizeof(hid_t)*8)-(GROUP_BITS+1))
#define ID_MASK ((1<<ID_BITS)-1)
/* Map an atom to a Group number */
#define H5I_GROUP(a) ((H5I_type_t)(((hid_t)(a)>>ID_BITS) & GROUP_MASK))
/****************************/
/* Package Private Typedefs */
/****************************/
/******************************/
/* Package Private Prototypes */
/******************************/
#endif /*_H5Ipkg_H*/
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