| #ifndef Py_BITSET_H | |
| #define Py_BITSET_H | |
| #ifdef __cplusplus | |
| extern "C" { | |
| #endif | |
| /* Bitset interface */ | |
| #define BYTE char | |
| typedef BYTE *bitset; | |
| bitset newbitset(int nbits); | |
| void delbitset(bitset bs); | |
| #define testbit(ss, ibit) (((ss)[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0) | |
| int addbit(bitset bs, int ibit); /* Returns 0 if already set */ | |
| int samebitset(bitset bs1, bitset bs2, int nbits); | |
| void mergebitset(bitset bs1, bitset bs2, int nbits); | |
| #define BITSPERBYTE (8*sizeof(BYTE)) | |
| #define NBYTES(nbits) (((nbits) + BITSPERBYTE - 1) / BITSPERBYTE) | |
| #define BIT2BYTE(ibit) ((ibit) / BITSPERBYTE) | |
| #define BIT2SHIFT(ibit) ((ibit) % BITSPERBYTE) | |
| #define BIT2MASK(ibit) (1 << BIT2SHIFT(ibit)) | |
| #define BYTE2BIT(ibyte) ((ibyte) * BITSPERBYTE) | |
| #ifdef __cplusplus | |
| } | |
| #endif | |
| #endif /* !Py_BITSET_H */ |