source:
trunk/minix/include/minix/bitmap.h@
10
| Last change on this file since 10 was 9, checked in by , 15 years ago | |
|---|---|
| File size: 356 bytes | |
| Line | |
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| 1 | #ifndef _BITMAP_H |
| 2 | #define _BITMAP_H |
| 3 | |
| 4 | /* Bit map operations to manipulate bits of a simple mask variable. */ |
| 5 | #define bit_set(mask, n) ((mask) |= (1 << (n))) |
| 6 | #define bit_unset(mask, n) ((mask) &= ~(1 << (n))) |
| 7 | #define bit_isset(mask, n) ((mask) & (1 << (n))) |
| 8 | #define bit_empty(mask) ((mask) = 0) |
| 9 | #define bit_fill(mask) ((mask) = ~0) |
| 10 | |
| 11 | #endif /* _BITMAP_H */ |
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