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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 1.2 (Berkeley) %G% | |
13 | */ | |
14 | ||
5f5fd947 GM |
15 | /* |
16 | * Some general definitions. | |
17 | * | |
18 | * @(#)general.h 3.1 (Berkeley) 8/11/87 | |
19 | */ | |
20 | ||
21 | ||
22 | #define numberof(x) (sizeof x/sizeof x[0]) | |
23 | #define highestof(x) (numberof(x)-1) | |
24 | ||
25 | #if defined(unix) | |
26 | #define ClearElement(x) bzero((char *)&x, sizeof x) | |
27 | #define ClearArray(x) bzero((char *)x, sizeof x) | |
28 | #else /* defined(unix) */ | |
29 | #define ClearElement(x) memset((char *)&x, 0, sizeof x) | |
30 | #define ClearArray(x) memset((char *)x, 0, sizeof x) | |
31 | #endif /* defined(unix) */ | |
32 | ||
33 | #if defined(unix) /* Define BSD equivalent mem* functions */ | |
34 | #define memcpy(dest,src,n) bcopy(src,dest,n) | |
35 | #define memmove(dest,src,n) bcopy(src,dest,n) | |
36 | #define memset(s,c,n) if (c == 0) { \ | |
37 | bzero(s,n); \ | |
38 | } else { \ | |
39 | register char *src = s; \ | |
40 | register int count = n; \ | |
41 | \ | |
42 | while (count--) { \ | |
43 | *src++ = c; \ | |
44 | } \ | |
45 | } | |
46 | #define memcmp(s1,s2,n) bcmp(s1,s2,n) | |
47 | #endif /* defined(unix) */ |