/usr/include/python2.7/bitset.h is in libpython2.7-dev 2.7.9-2+deb8u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | #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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