| 61 | }; |
| 62 | |
| 63 | void flip_bit ( int bit ) |
| 64 | { |
| 65 | int byteno = bit / 8; |
| 66 | int bitno = bit % 8; |
| 67 | uchar mask = 1 << bitno; |
| 68 | //fprintf ( stderr, "(byte %d bit %d mask %d)", |
| 69 | // byteno, bitno, (int)mask ); |
| 70 | zbuf[byteno] ^= mask; |
| 71 | } |
| 72 | |
| 73 | int main ( int argc, char** argv ) |
| 74 | { |