diff options
Diffstat (limited to 'gl/alignof.h')
-rw-r--r-- | gl/alignof.h | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/gl/alignof.h b/gl/alignof.h deleted file mode 100644 index 240468c6..00000000 --- a/gl/alignof.h +++ /dev/null @@ -1,53 +0,0 @@ -/* 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 */ |