X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Falignof.h;h=74e35aa9d122ca548a86903e0e08844a254f97f2;hb=844a4da8483610b921cb017679848ceaf47a7b2e;hp=24f4bc9b4c5004e1584af0d5fb293b201887b5bd;hpb=d60f3b0c6b0f93a601acd1cfd3923f94ca05abb0;p=gnulib.git
diff --git a/lib/alignof.h b/lib/alignof.h
index 24f4bc9b4..74e35aa9d 100644
--- a/lib/alignof.h
+++ b/lib/alignof.h
@@ -1,5 +1,5 @@
/* Determine alignment of types.
- Copyright (C) 2003-2004, 2006, 2009-2011 Free Software Foundation, Inc.
+ Copyright (C) 2003-2004, 2006, 2009-2012 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
@@ -12,16 +12,18 @@
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. */
+ along with this program; if not, see . */
#ifndef _ALIGNOF_H
#define _ALIGNOF_H
#include
-/* Determine the alignment of a structure slot (field) of a given type,
+/* alignof_slot (TYPE)
+ Determine the alignment of a structure slot (field) of a given type,
at compile time. Note that the result depends on the ABI.
+ This is the same as alignof (TYPE) and _Alignof (TYPE), defined in
+ if __alignof_is_defined is 1.
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
@@ -31,7 +33,8 @@
# 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.
+/* alignof_type (TYPE)
+ Determine the good alignment of an 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,
@@ -44,10 +47,4 @@
# 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 */