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/*************************************************************************\
*
* Package: MyLib
* File: bitset.c
* Environment: ANSI C
*
* Copyright (c) 2002 Pierre L'Ecuyer, DIRO, Université de Montréal.
* e-mail: lecuyer@iro.umontreal.ca
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted without a fee for private, research,
* academic, or other non-commercial purposes.
* Any use of this software in a commercial environment requires a
* written licence from the copyright owner.
*
* Any changes made to this package must be clearly identified as such.
*
* In scientific publications which used this software, a reference to it
* would be appreciated.
*
* Redistributions of source code must retain this copyright notice
* and the following disclaimer.
*
* THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
\*************************************************************************/
#include "bitset.h"
#include "util.h"
#include <stdio.h>
#include <string.h>
#include <limits.h>
unsigned long bitset_maskUL[] = {
1,
2,
4,
8,
16,
32,
64,
128,
256,
512,
1024,
2048,
4096,
8192,
16384,
32768,
65536,
131072,
262144,
524288,
1048576,
2097152,
4194304,
8388608,
16777216,
33554432,
67108864,
134217728,
268435456,
536870912,
1073741824,
2147483648UL
#if ULONG_MAX > 4294967295UL
,
4294967296,
8589934592,
17179869184,
34359738368,
68719476736,
137438953472,
274877906944,
549755813888,
1099511627776,
2199023255552,
4398046511104,
8796093022208,
17592186044416,
35184372088832,
70368744177664,
140737488355328,
281474976710656,
562949953421312,
1125899906842624,
2251799813685248,
4503599627370496,
9007199254740992,
18014398509481984,
36028797018963968,
72057594037927936,
144115188075855872,
288230376151711744,
576460752303423488,
1152921504606846976,
2305843009213693952,
4611686018427387904,
9223372036854775808UL
#endif
};
/*--------------------------------------------------------------------------*/
unsigned long bitset_MASK[] = {
0,
1,
3,
7,
15,
31,
63,
127,
255,
511,
1023,
2047,
4095,
8191,
16383,
32767,
65535,
131071,
262143,
524287,
1048575,
2097151,
4194303,
8388607,
16777215,
33554431,
67108863,
134217727,
268435455,
536870911,
1073741823,
2147483647,
4294967295UL
#if ULONG_MAX > 4294967295UL
,
8589934591,
17179869183,
34359738367,
68719476735,
137438953471,
274877906943,
549755813887,
1099511627775,
2199023255551,
4398046511103,
8796093022207,
17592186044415,
35184372088831,
70368744177663,
140737488355327,
281474976710655,
562949953421311,
1125899906842623,
2251799813685247,
4503599627370495,
9007199254740991,
18014398509481983,
36028797018963967,
72057594037927935,
144115188075855871,
288230376151711743,
576460752303423487,
1152921504606846975,
2305843009213693951,
4611686018427387903,
9223372036854775807,
18446744073709551615UL
#endif
};
/*--------------------------------------------------------------------------*/
void bitset_WriteSet (char *desc, bitset_BitSet S, int n)
{
int i;
bitset_BitSet mask;
util_Assert (n > 0, "bitset_WriteSet: s <= 0");
if ((unsigned) n > CHAR_BIT * sizeof (bitset_BitSet)) {
n = CHAR_BIT * sizeof (bitset_BitSet);
printf ("********** bitset_WriteSet: only %d bits in a BitSet\n\n", n);
}
if (desc != NULL && strlen (desc) > 0)
printf ("%s", desc);
mask = (bitset_BitSet) 1 << (n - 1);
for (i = 0; i < n; i++) {
if (S & mask)
printf ("1");
else
printf ("0");
mask >>= 1;
}
}
/*--------------------------------------------------------------------------*/
bitset_BitSet bitset_Reverse (bitset_BitSet Z, int s)
{
unsigned long res = 0;
int i;
for (i = 0; i < s; i++) {
res = (res << 1) | (Z & 1);
Z >>= 1;
}
return res;
}
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