1991-02-19 13:39:46 +01:00
|
|
|
/***********************************************************
|
|
|
|
|
Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
|
|
|
|
|
Netherlands.
|
|
|
|
|
|
|
|
|
|
All Rights Reserved
|
|
|
|
|
|
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
|
|
|
documentation for any purpose and without fee is hereby granted,
|
|
|
|
|
provided that the above copyright notice appear in all copies and that
|
|
|
|
|
both that copyright notice and this permission notice appear in
|
|
|
|
|
supporting documentation, and that the names of Stichting Mathematisch
|
|
|
|
|
Centrum or CWI not be used in advertising or publicity pertaining to
|
|
|
|
|
distribution of the software without specific, written prior permission.
|
|
|
|
|
|
|
|
|
|
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
|
|
|
|
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
|
|
|
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
|
|
|
|
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
|
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
|
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
|
|
|
|
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
|
|
|
|
|
|
******************************************************************/
|
|
|
|
|
|
1990-10-14 13:07:46 +01:00
|
|
|
/* Bitset interface */
|
|
|
|
|
|
|
|
|
|
#define BYTE char
|
|
|
|
|
|
|
|
|
|
typedef BYTE *bitset;
|
|
|
|
|
|
|
|
|
|
bitset newbitset PROTO((int nbits));
|
|
|
|
|
void delbitset PROTO((bitset bs));
|
|
|
|
|
/* int testbit PROTO((bitset bs, int ibit)); /* Now a macro, see below */
|
|
|
|
|
int addbit PROTO((bitset bs, int ibit)); /* Returns 0 if already set */
|
|
|
|
|
int samebitset PROTO((bitset bs1, bitset bs2, int nbits));
|
|
|
|
|
void mergebitset PROTO((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)
|
|
|
|
|
|
|
|
|
|
#define testbit(ss, ibit) (((ss)[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0)
|
