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