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File name : bitset.h

Content :#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 */

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