Rev 3675 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 3675 | Rev 4692 | ||
|---|---|---|---|
| Line 39... | Line 39... | ||
| 39 | 39 | ||
| 40 | #define BITS2BYTES(bits) (bits ? ((((bits)-1)>>3)+1) : 0) |
40 | #define BITS2BYTES(bits) (bits ? ((((bits)-1)>>3)+1) : 0) |
| 41 | 41 | ||
| 42 | typedef struct { |
42 | typedef struct { |
| 43 | uint8_t *map; |
43 | uint8_t *map; |
| 44 | count_t bits; |
44 | size_t bits; |
| 45 | } bitmap_t; |
45 | } bitmap_t; |
| 46 | 46 | ||
| 47 | extern void bitmap_initialize(bitmap_t *bitmap, uint8_t *map, count_t bits); |
47 | extern void bitmap_initialize(bitmap_t *bitmap, uint8_t *map, size_t bits); |
| 48 | extern void bitmap_set_range(bitmap_t *bitmap, index_t start, count_t bits); |
48 | extern void bitmap_set_range(bitmap_t *bitmap, size_t start, size_t bits); |
| 49 | extern void bitmap_clear_range(bitmap_t *bitmap, index_t start, count_t bits); |
49 | extern void bitmap_clear_range(bitmap_t *bitmap, size_t start, size_t bits); |
| 50 | extern void bitmap_copy(bitmap_t *dst, bitmap_t *src, count_t bits); |
50 | extern void bitmap_copy(bitmap_t *dst, bitmap_t *src, size_t bits); |
| 51 | 51 | ||
| 52 | static inline int bitmap_get(bitmap_t *bitmap,index_t bit) |
52 | static inline int bitmap_get(bitmap_t *bitmap, size_t bit) |
| 53 | { |
53 | { |
| 54 | if(bit >= bitmap->bits) |
54 | if(bit >= bitmap->bits) |
| 55 | return 0; |
55 | return 0; |
| - | 56 | ||
| 56 | return !! ((bitmap->map)[bit/8] & (1 << (bit & 7))); |
57 | return !! ((bitmap->map)[bit/8] & (1 << (bit & 7))); |
| 57 | } |
58 | } |
| 58 | 59 | ||
| 59 | 60 | ||
| 60 | #endif |
61 | #endif |