projects / unix-history / blame
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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 | |
| b36fc510 KB |
6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, | |
| 8 | * advertising materials, and other materials related to such | |
| 9 | * distribution and use acknowledge that the software was developed | |
| 10 | * by the University of California, Berkeley. The name of the | |
| 11 | * University may not be used to endorse or promote products derived | |
| 12 | * from this software without specific prior written permission. | |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 897ce52e | 16 | * |
| b36fc510 | 17 | * @(#)general.h 1.3 (Berkeley) %G% |
| 897ce52e KB |
18 | */ |
| 19 | ||
| 5f5fd947 GM |
20 | /* |
| 21 | * Some general definitions. | |
| 22 | * | |
| 23 | * @(#)general.h 3.1 (Berkeley) 8/11/87 | |
| 24 | */ | |
| 25 | ||
| 26 | ||
| 27 | #define numberof(x) (sizeof x/sizeof x[0]) | |
| 28 | #define highestof(x) (numberof(x)-1) | |
| 29 | ||
| 30 | #if defined(unix) | |
| 31 | #define ClearElement(x) bzero((char *)&x, sizeof x) | |
| 32 | #define ClearArray(x) bzero((char *)x, sizeof x) | |
| 33 | #else /* defined(unix) */ | |
| 34 | #define ClearElement(x) memset((char *)&x, 0, sizeof x) | |
| 35 | #define ClearArray(x) memset((char *)x, 0, sizeof x) | |
| 36 | #endif /* defined(unix) */ | |
| 37 | ||
| 38 | #if defined(unix) /* Define BSD equivalent mem* functions */ | |
| 39 | #define memcpy(dest,src,n) bcopy(src,dest,n) | |
| 40 | #define memmove(dest,src,n) bcopy(src,dest,n) | |
| 41 | #define memset(s,c,n) if (c == 0) { \ | |
| 42 | bzero(s,n); \ | |
| 43 | } else { \ | |
| 44 | register char *src = s; \ | |
| 45 | register int count = n; \ | |
| 46 | \ | |
| 47 | while (count--) { \ | |
| 48 | *src++ = c; \ | |
| 49 | } \ | |
| 50 | } | |
| 51 | #define memcmp(s1,s2,n) bcmp(s1,s2,n) | |
| 52 | #endif /* defined(unix) */ |