1 /* 2 * Copyright (c) 1988 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)general.h 1.5 (Berkeley) 06/28/90 8 */ 9 10 /* 11 * Some general definitions. 12 */ 13 14 15 #define numberof(x) (sizeof x/sizeof x[0]) 16 #define highestof(x) (numberof(x)-1) 17 18 #if defined(unix) 19 #define ClearElement(x) bzero((char *)&x, sizeof x) 20 #define ClearArray(x) bzero((char *)x, sizeof x) 21 #else /* defined(unix) */ 22 #define ClearElement(x) memset((char *)&x, 0, sizeof x) 23 #define ClearArray(x) memset((char *)x, 0, sizeof x) 24 #endif /* defined(unix) */ 25 26 #if defined(unix) /* Define BSD equivalent mem* functions */ 27 #define memcpy(dest,src,n) bcopy(src,dest,n) 28 #define memmove(dest,src,n) bcopy(src,dest,n) 29 #define memset(s,c,n) if (c == 0) { \ 30 bzero(s,n); \ 31 } else { \ 32 register char *src = s; \ 33 register int count = n; \ 34 \ 35 while (count--) { \ 36 *src++ = c; \ 37 } \ 38 } 39 #define memcmp(s1,s2,n) bcmp(s1,s2,n) 40 #endif /* defined(unix) */ 41