1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. 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 8.2 (Berkeley) 05/04/95 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 26