Skip to main content

Browse the archive

Staging
v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision 1859f5b4d229ed9f79935b13332fcb72e097ea74 authored by Guido van Rossum on 24 January 2008, 17:59:56 UTC, committed by Guido van Rossum on 24 January 2008, 17:59:56 UTC 
Backport r60246.
 
Fix issue #1303614, test67.py.
1 parent 61c2c95
Raw File
Tip revision: 1859f5b4d229ed9f79935b13332fcb72e097ea74 authored by Guido van Rossum on 24 January 2008, 17:59:56 UTC
Backport r60246.
Tip revision: 1859f5b
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 */
back to top