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Last change
on this file since 1538 was 2, checked in by Yuri Dario, 15 years ago |
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Initial import for vendor code.
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-
Property svn:eol-style
set to
native
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File size:
792 bytes
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| 1 |
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| 2 | #ifndef Py_BITSET_H
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| 3 | #define Py_BITSET_H
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| 4 | #ifdef __cplusplus
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| 5 | extern "C" {
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| 6 | #endif
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| 7 |
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| 8 | /* Bitset interface */
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| 9 |
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| 10 | #define BYTE char
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| 11 |
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| 12 | typedef BYTE *bitset;
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| 13 |
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| 14 | bitset newbitset(int nbits);
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| 15 | void delbitset(bitset bs);
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| 16 | #define testbit(ss, ibit) (((ss)[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0)
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| 17 | int addbit(bitset bs, int ibit); /* Returns 0 if already set */
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| 18 | int samebitset(bitset bs1, bitset bs2, int nbits);
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| 19 | void mergebitset(bitset bs1, bitset bs2, int nbits);
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| 20 |
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| 21 | #define BITSPERBYTE (8*sizeof(BYTE))
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| 22 | #define NBYTES(nbits) (((nbits) + BITSPERBYTE - 1) / BITSPERBYTE)
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| 23 |
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| 24 | #define BIT2BYTE(ibit) ((ibit) / BITSPERBYTE)
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| 25 | #define BIT2SHIFT(ibit) ((ibit) % BITSPERBYTE)
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| 26 | #define BIT2MASK(ibit) (1 << BIT2SHIFT(ibit))
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| 27 | #define BYTE2BIT(ibyte) ((ibyte) * BITSPERBYTE)
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| 28 |
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| 29 | #ifdef __cplusplus
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| 30 | }
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| 31 | #endif
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| 32 | #endif /* !Py_BITSET_H */
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