1 2 #ifndef Py_BITSET_H 3 #define Py_BITSET_H 4 #ifdef __cplusplus 5 extern "C" { 6 #endif 7 8 /* Bitset interface */ 9 10 #define BYTE char 11 typedef BYTE *bitset; 12 13 #define testbit(ss, ibit) (((ss)[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0) 14 15 #define BITSPERBYTE (8*sizeof(BYTE)) 16 #define BIT2BYTE(ibit) ((ibit) / BITSPERBYTE) 17 #define BIT2SHIFT(ibit) ((ibit) % BITSPERBYTE) 18 #define BIT2MASK(ibit) (1 << BIT2SHIFT(ibit)) 19 20 #ifdef __cplusplus 21 } 22 #endif 23 #endif /* !Py_BITSET_H */ 24