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1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Kenneth Almquist. | |
7 | * | |
8 | * %sccs.include.redist.c% | |
9 | * | |
10 | * @(#)machdep.h 5.1 (Berkeley) %G% | |
11 | */ | |
12 | ||
13 | /* | |
14 | * Most machines require the value returned from malloc to be aligned | |
15 | * in some way. The following macro will get this right on many machines. | |
16 | */ | |
17 | ||
18 | #ifndef ALIGN | |
19 | union align { | |
20 | int i; | |
21 | char *cp; | |
22 | }; | |
23 | ||
24 | #define ALIGN(nbytes) ((nbytes) + sizeof(union align) - 1 &~ (sizeof(union align) - 1)) | |
25 | #endif |