projects / OpenSPARC-T2-DV / blame
| Commit | Line | Data |
|---|---|---|
| 86530b38 AT |
1 | #ifndef Py_BITSET_H |
| 2 | #define Py_BITSET_H | |
| 3 | #ifdef __cplusplus | |
| 4 | extern "C" { | |
| 5 | #endif | |
| 6 | ||
| 7 | /* Bitset interface */ | |
| 8 | ||
| 9 | #define BYTE char | |
| 10 | ||
| 11 | typedef BYTE *bitset; | |
| 12 | ||
| 13 | bitset newbitset(int nbits); | |
| 14 | void delbitset(bitset bs); | |
| 15 | #define testbit(ss, ibit) (((ss)[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0) | |
| 16 | int addbit(bitset bs, int ibit); /* Returns 0 if already set */ | |
| 17 | int samebitset(bitset bs1, bitset bs2, int nbits); | |
| 18 | void mergebitset(bitset bs1, bitset bs2, int nbits); | |
| 19 | ||
| 20 | #define BITSPERBYTE (8*sizeof(BYTE)) | |
| 21 | #define NBYTES(nbits) (((nbits) + BITSPERBYTE - 1) / BITSPERBYTE) | |
| 22 | ||
| 23 | #define BIT2BYTE(ibit) ((ibit) / BITSPERBYTE) | |
| 24 | #define BIT2SHIFT(ibit) ((ibit) % BITSPERBYTE) | |
| 25 | #define BIT2MASK(ibit) (1 << BIT2SHIFT(ibit)) | |
| 26 | #define BYTE2BIT(ibyte) ((ibyte) * BITSPERBYTE) | |
| 27 | ||
| 28 | #ifdef __cplusplus | |
| 29 | } | |
| 30 | #endif | |
| 31 | #endif /* !Py_BITSET_H */ |