| 31 | |
| 32 | |
| 33 | uint8_t BitArray::begin(const uint8_t bits, const uint16_t size) |
| 34 | { |
| 35 | if (bits == 0 || bits > 32) |
| 36 | { |
| 37 | _error = BA_ELEMENT_SIZE_ERR; |
| 38 | return _error; |
| 39 | } |
| 40 | if ((1UL * bits * size)/8 > (1UL * BA_MAX_SEGMENTS * BA_SEGMENT_SIZE)) |
| 41 | { |
| 42 | _error = BA_SIZE_ERR; |
| 43 | return _error; |
| 44 | } |
| 45 | |
| 46 | for (uint8_t i = 0; i < BA_MAX_SEGMENTS; i++) |
| 47 | { |
| 48 | if (_ar[i]) free(_ar[i]); |
| 49 | } |
| 50 | |
| 51 | _segments = 0; |
| 52 | _bits = bits; |
| 53 | _bytes = (_bits * size + 7) / 8; |
| 54 | uint16_t b = _bytes; |
| 55 | while (b > 0) |
| 56 | { |
| 57 | _ar[_segments] = (uint8_t*) malloc(min(b, (uint16_t) BA_SEGMENT_SIZE)); |
| 58 | if (_ar[_segments] == NULL) |
| 59 | { |
| 60 | _error = BA_NO_MEMORY_ERR; |
| 61 | return _error; |
| 62 | } |
| 63 | b = b - min(b, (uint16_t) BA_SEGMENT_SIZE); |
| 64 | _segments++; |
| 65 | } |
| 66 | _error = BA_OK; |
| 67 | return _error; |
| 68 | } |
| 69 | |
| 70 | |
| 71 | uint32_t BitArray::get(const uint16_t index) |