projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 5f5fd947 GM |
1 | /* |
| 2 | * Some general definitions. | |
| 3 | * | |
| 4 | * @(#)general.h 3.1 (Berkeley) 8/11/87 | |
| 5 | */ | |
| 6 | ||
| 7 | ||
| 8 | #define numberof(x) (sizeof x/sizeof x[0]) | |
| 9 | #define highestof(x) (numberof(x)-1) | |
| 10 | ||
| 11 | #if defined(unix) | |
| 12 | #define ClearElement(x) bzero((char *)&x, sizeof x) | |
| 13 | #define ClearArray(x) bzero((char *)x, sizeof x) | |
| 14 | #else /* defined(unix) */ | |
| 15 | #define ClearElement(x) memset((char *)&x, 0, sizeof x) | |
| 16 | #define ClearArray(x) memset((char *)x, 0, sizeof x) | |
| 17 | #endif /* defined(unix) */ | |
| 18 | ||
| 19 | #if defined(unix) /* Define BSD equivalent mem* functions */ | |
| 20 | #define memcpy(dest,src,n) bcopy(src,dest,n) | |
| 21 | #define memmove(dest,src,n) bcopy(src,dest,n) | |
| 22 | #define memset(s,c,n) if (c == 0) { \ | |
| 23 | bzero(s,n); \ | |
| 24 | } else { \ | |
| 25 | register char *src = s; \ | |
| 26 | register int count = n; \ | |
| 27 | \ | |
| 28 | while (count--) { \ | |
| 29 | *src++ = c; \ | |
| 30 | } \ | |
| 31 | } | |
| 32 | #define memcmp(s1,s2,n) bcmp(s1,s2,n) | |
| 33 | #endif /* defined(unix) */ |