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https://github.com/python/cpython
Revision 52209d3a1eb03d5a9ef200ffe400c36d32d42ad1 authored by Hynek Schlawack on 29 May 2012, 10:04:54 UTC, committed by Hynek Schlawack on 29 May 2012, 10:04:54 UTC
1 parent 737b173
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Tip revision: 52209d3a1eb03d5a9ef200ffe400c36d32d42ad1 authored by Hynek Schlawack on 29 May 2012, 10:04:54 UTC
#14835: Make plistlib output empty arrays & dicts like OS X
Tip revision: 52209d3
bitset.h

#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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