| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * Pointer alignment hack |
| 4 | * |
| 5 | * (c) 2003 Straylight/Edgeware |
| 6 | */ |
| 7 | |
| 8 | /*----- Licensing notice --------------------------------------------------* |
| 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. |
| 16 | * |
| 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. |
| 21 | * |
| 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 | |
| 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 |