#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 */ |