jpayne@69: 
jpayne@69: #ifndef Py_BITSET_H
jpayne@69: #define Py_BITSET_H
jpayne@69: #ifdef __cplusplus
jpayne@69: extern "C" {
jpayne@69: #endif
jpayne@69: 
jpayne@69: /* Bitset interface */
jpayne@69: 
jpayne@69: #define BYTE            char
jpayne@69: typedef BYTE *bitset;
jpayne@69: 
jpayne@69: #define testbit(ss, ibit) (((ss)[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0)
jpayne@69: 
jpayne@69: #define BITSPERBYTE     (8*sizeof(BYTE))
jpayne@69: #define BIT2BYTE(ibit)  ((ibit) / BITSPERBYTE)
jpayne@69: #define BIT2SHIFT(ibit) ((ibit) % BITSPERBYTE)
jpayne@69: #define BIT2MASK(ibit)  (1 << BIT2SHIFT(ibit))
jpayne@69: 
jpayne@69: #ifdef __cplusplus
jpayne@69: }
jpayne@69: #endif
jpayne@69: #endif /* !Py_BITSET_H */