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-/* Determine alignment of types.
- Copyright (C) 2003-2004, 2006, 2009-2010 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
-
-#ifndef _ALIGNOF_H
-#define _ALIGNOF_H
-
-#include <stddef.h>
-
-/* Determine the alignment of a structure slot (field) of a given type,
- at compile time. Note that the result depends on the ABI.
- Note: The result cannot be used as a value for an 'enum' constant,
- due to bugs in HP-UX 10.20 cc and AIX 3.2.5 xlc. */
-#if defined __cplusplus
- template <class type> struct alignof_helper { char __slot1; type __slot2; };
-# define alignof_slot(type) offsetof (alignof_helper<type>, __slot2)
-#else
-# define alignof_slot(type) offsetof (struct { char __slot1; type __slot2; }, __slot2)
-#endif
-
-/* Determine the good alignment of a object of the given type at compile time.
- Note that this is not necessarily the same as alignof_slot(type).
- For example, with GNU C on x86 platforms: alignof_type(double) = 8, but
- - when -malign-double is not specified: alignof_slot(double) = 4,
- - when -malign-double is specified: alignof_slot(double) = 8.
- Note: The result cannot be used as a value for an 'enum' constant,
- due to bugs in HP-UX 10.20 cc and AIX 3.2.5 xlc. */
-#if defined __GNUC__
-# define alignof_type __alignof__
-#else
-# define alignof_type alignof_slot
-#endif
-
-/* alignof is an alias for alignof_slot semantics, since that's what most
- callers need.
- Note: The result cannot be used as a value for an 'enum' constant,
- due to bugs in HP-UX 10.20 cc and AIX 3.2.5 xlc. */
-#define alignof alignof_slot
-
-#endif /* _ALIGNOF_H */