1 /* 2 * Copyright (c) 1988 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that this notice is preserved and that due credit is given 7 * to the University of California at Berkeley. The name of the University 8 * may not be used to endorse or promote products derived from this 9 * software without specific prior written permission. This software 10 * is provided ``as is'' without express or implied warranty. 11 * 12 * @(#)general.h 3.2 (Berkeley) 03/28/88 13 */ 14 15 /* 16 * Some general definitions. 17 */ 18 19 #define numberof(x) (sizeof x/sizeof x[0]) 20 #define highestof(x) (numberof(x)-1) 21 22 #if defined(unix) 23 #define ClearElement(x) bzero((char *)&x, sizeof x) 24 #define ClearArray(x) bzero((char *)x, sizeof x) 25 #else /* defined(unix) */ 26 #define ClearElement(x) memset((char *)&x, 0, sizeof x) 27 #define ClearArray(x) memset((char *)x, 0, sizeof x) 28 #endif /* defined(unix) */ 29 30 #if defined(unix) /* Define BSD equivalent mem* functions */ 31 #define memcpy(dest,src,n) bcopy(src,dest,n) 32 #define memmove(dest,src,n) bcopy(src,dest,n) 33 #define memset(s,c,n) if (c == 0) { \ 34 bzero(s,n); \ 35 } else { \ 36 register char *src = s; \ 37 register int count = n; \ 38 \ 39 while (count--) { \ 40 *src++ = c; \ 41 } \ 42 } 43 #define memcmp(s1,s2,n) bcmp(s1,s2,n) 44 #endif /* defined(unix) */ 45