b65a28d1 |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: align.h,v 1.1 2003/10/12 14:44:26 mdw Exp $ |
4 | * |
5 | * Pointer alignment hack |
6 | * |
7 | * (c) 2003 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of the mLib utilities library. |
13 | * |
14 | * mLib is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * mLib is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
25 | * License along with mLib; if not, write to the Free |
26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: align.h,v $ |
33 | * Revision 1.1 2003/10/12 14:44:26 mdw |
34 | * General alignment assumptions and tweaks. |
35 | * |
36 | */ |
37 | |
38 | #ifndef MLIB_ALIGN_H |
39 | #define MLIB_ALIGN_H |
40 | |
41 | #ifdef __cplusplus |
42 | extern "C" { |
43 | #endif |
44 | |
45 | /*----- Data structures ---------------------------------------------------*/ |
46 | |
47 | union align { |
48 | int i; |
49 | long l; |
50 | double d; |
51 | void *p; |
52 | void (*f)(void *); |
53 | struct notexist *s; |
54 | }; |
55 | |
56 | /*----- Macros provided ---------------------------------------------------*/ |
57 | |
58 | #define ALIGN(sz) do { \ |
59 | sz += sizeof(union align) - 1; \ |
60 | sz -= sz % sizeof(union align); \ |
61 | } while (0) |
62 | |
63 | /*----- That's all, folks -------------------------------------------------*/ |
64 | |
65 | #ifdef __cplusplus |
66 | } |
67 | #endif |
68 | |
69 | #endif |