/* Variable array bitsets.
- Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
This program is free software; you can redistribute it and/or modify
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-*/
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
#include "vbitset.h"
+
#include <stdlib.h>
#include <string.h>
/* This file implements variable size bitsets stored as a variable
length array of words. Any unused bits in the last word must be
- zero.
+ zero.
Note that binary or ternary operations assume that each bitset operand
has the same size.
*/
-static void vbitset_unused_clear PARAMS ((bitset));
+static void vbitset_unused_clear (bitset);
-static void vbitset_set PARAMS ((bitset, bitset_bindex));
-static void vbitset_reset PARAMS ((bitset, bitset_bindex));
-static bool vbitset_test PARAMS ((bitset, bitset_bindex));
-static bitset_bindex vbitset_list PARAMS ((bitset, bitset_bindex *,
- bitset_bindex,
- bitset_bindex *));
-static bitset_bindex vbitset_list_reverse PARAMS ((bitset, bitset_bindex *,
- bitset_bindex,
- bitset_bindex *));
+static void vbitset_set (bitset, bitset_bindex);
+static void vbitset_reset (bitset, bitset_bindex);
+static bool vbitset_test (bitset, bitset_bindex);
+static bitset_bindex vbitset_list (bitset, bitset_bindex *,
+ bitset_bindex, bitset_bindex *);
+static bitset_bindex vbitset_list_reverse (bitset, bitset_bindex *,
+ bitset_bindex, bitset_bindex *);
#define VBITSET_N_WORDS(N) (((N) + BITSET_WORD_BITS - 1) / BITSET_WORD_BITS)
#define VBITSET_WORDS(X) ((X)->b.cdata)
#define VBITSET_SIZE(X) ((X)->b.csize)
#define VBITSET_ASIZE(X) ((X)->v.size)
-
+#undef min
+#undef max
#define min(a, b) ((a) > (b) ? (b) : (a))
#define max(a, b) ((a) > (b) ? (a) : (b))
static bitset_bindex
-vbitset_resize (src, n_bits)
- bitset src;
- bitset_bindex n_bits;
+vbitset_resize (bitset src, bitset_bindex n_bits)
{
bitset_windex oldsize;
bitset_windex newsize;
{
bitset_windex size;
- /* The bitset needs to grow. If we already have enough memory
+ /* The bitset needs to grow. If we already have enough memory
allocated, then just zero what we need. */
if (newsize > VBITSET_ASIZE (src))
{
size = newsize;
else
size = newsize + newsize / 4;
-
+
VBITSET_WORDS (src)
= realloc (VBITSET_WORDS (src), size * sizeof (bitset_word));
VBITSET_ASIZE (src) = size;
}
- memset (VBITSET_WORDS (src) + oldsize, 0,
+ memset (VBITSET_WORDS (src) + oldsize, 0,
(newsize - oldsize) * sizeof (bitset_word));
VBITSET_SIZE (src) = newsize;
}
static void
-vbitset_ones (dst)
- bitset dst;
+vbitset_ones (bitset dst)
{
bitset_word *dstp = VBITSET_WORDS (dst);
unsigned int bytes;
static void
-vbitset_zero (dst)
- bitset dst;
+vbitset_zero (bitset dst)
{
bitset_word *dstp = VBITSET_WORDS (dst);
unsigned int bytes;
static bool
-vbitset_empty_p (dst)
- bitset dst;
+vbitset_empty_p (bitset dst)
{
unsigned int i;
bitset_word *dstp = VBITSET_WORDS (dst);
static void
-vbitset_copy1 (dst, src)
- bitset dst;
- bitset src;
+vbitset_copy1 (bitset dst, bitset src)
{
bitset_word *srcp;
bitset_word *dstp;
static void
-vbitset_not (dst, src)
- bitset dst;
- bitset src;
+vbitset_not (bitset dst, bitset src)
{
unsigned int i;
bitset_word *srcp;
sizeof (bitset_word) * (dsize - ssize));
}
-
+
static bool
-vbitset_equal_p (dst, src)
- bitset dst;
- bitset src;
+vbitset_equal_p (bitset dst, bitset src)
{
unsigned int i;
bitset_word *srcp = VBITSET_WORDS (src);
static bool
-vbitset_subset_p (dst, src)
- bitset dst;
- bitset src;
+vbitset_subset_p (bitset dst, bitset src)
{
unsigned int i;
bitset_word *srcp = VBITSET_WORDS (src);
bitset_word *dstp = VBITSET_WORDS (dst);
bitset_windex ssize = VBITSET_SIZE (src);
bitset_windex dsize = VBITSET_SIZE (dst);
-
+
for (i = 0; i < min (ssize, dsize); i++, dstp++, srcp++)
if (*dstp != (*srcp | *dstp))
return 0;
static bool
-vbitset_disjoint_p (dst, src)
- bitset dst;
- bitset src;
+vbitset_disjoint_p (bitset dst, bitset src)
{
unsigned int i;
bitset_word *srcp = VBITSET_WORDS (src);
static void
-vbitset_and (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
+vbitset_and (bitset dst, bitset src1, bitset src2)
{
unsigned int i;
bitset_word *src1p;
for (i = 0; i < min (ssize1, ssize2); i++)
*dstp++ = *src1p++ & *src2p++;
-
+
memset (dstp, 0, sizeof (bitset_word) * (dsize - min (ssize1, ssize2)));
}
static bool
-vbitset_and_cmp (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
+vbitset_and_cmp (bitset dst, bitset src1, bitset src2)
{
unsigned int i;
int changed = 0;
for (i = 0; i < min (ssize1, ssize2); i++, dstp++)
{
bitset_word tmp = *src1p++ & *src2p++;
-
+
if (*dstp != tmp)
{
changed = 1;
*dstp = tmp;
}
}
-
+
if (ssize2 > ssize1)
{
src1p = src2p;
static void
-vbitset_andn (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
+vbitset_andn (bitset dst, bitset src1, bitset src2)
{
unsigned int i;
bitset_word *src1p;
for (i = 0; i < min (ssize1, ssize2); i++)
*dstp++ = *src1p++ & ~(*src2p++);
-
+
if (ssize2 > ssize1)
{
for (; i < ssize2; i++)
static bool
-vbitset_andn_cmp (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
+vbitset_andn_cmp (bitset dst, bitset src1, bitset src2)
{
unsigned int i;
int changed = 0;
for (i = 0; i < min (ssize1, ssize2); i++, dstp++)
{
bitset_word tmp = *src1p++ & ~(*src2p++);
-
+
if (*dstp != tmp)
{
changed = 1;
*dstp = tmp;
}
}
-
+
if (ssize2 > ssize1)
{
for (; i < ssize2; i++, dstp++)
for (; i < ssize1; i++, dstp++)
{
bitset_word tmp = *src1p++;
-
+
if (*dstp != tmp)
{
changed = 1;
static void
-vbitset_or (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
+vbitset_or (bitset dst, bitset src1, bitset src2)
{
unsigned int i;
bitset_word *src1p;
for (i = 0; i < min (ssize1, ssize2); i++)
*dstp++ = *src1p++ | *src2p++;
-
+
if (ssize2 > ssize1)
{
src1p = src2p;
static bool
-vbitset_or_cmp (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
+vbitset_or_cmp (bitset dst, bitset src1, bitset src2)
{
unsigned int i;
int changed = 0;
for (i = 0; i < min (ssize1, ssize2); i++, dstp++)
{
bitset_word tmp = *src1p++ | *src2p++;
-
+
if (*dstp != tmp)
{
changed = 1;
*dstp = tmp;
}
}
-
+
if (ssize2 > ssize1)
{
src1p = src2p;
for (; i < ssize1; i++, dstp++)
{
bitset_word tmp = *src1p++;
-
+
if (*dstp != tmp)
{
changed = 1;
static void
-vbitset_xor (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
+vbitset_xor (bitset dst, bitset src1, bitset src2)
{
unsigned int i;
bitset_word *src1p;
for (i = 0; i < min (ssize1, ssize2); i++)
*dstp++ = *src1p++ ^ *src2p++;
-
+
if (ssize2 > ssize1)
{
src1p = src2p;
static bool
-vbitset_xor_cmp (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
+vbitset_xor_cmp (bitset dst, bitset src1, bitset src2)
{
unsigned int i;
int changed = 0;
for (i = 0; i < min (ssize1, ssize2); i++, dstp++)
{
bitset_word tmp = *src1p++ ^ *src2p++;
-
+
if (*dstp != tmp)
{
changed = 1;
*dstp = tmp;
}
}
-
+
if (ssize2 > ssize1)
{
src1p = src2p;
for (; i < ssize1; i++, dstp++)
{
bitset_word tmp = *src1p++;
-
+
if (*dstp != tmp)
{
changed = 1;
bitsets. */
static void
-vbitset_and_or (dst, src1, src2, src3)
- bitset dst;
- bitset src1;
- bitset src2;
- bitset src3;
+vbitset_and_or (bitset dst, bitset src1, bitset src2, bitset src3)
{
unsigned int i;
bitset_word *src1p;
bitset_word *src3p;
bitset_word *dstp;
bitset_windex size;
-
+
if (BITSET_NBITS_ (src1) != BITSET_NBITS_ (src2)
|| BITSET_NBITS_ (src1) != BITSET_NBITS_ (src3))
{
static bool
-vbitset_and_or_cmp (dst, src1, src2, src3)
- bitset dst;
- bitset src1;
- bitset src2;
- bitset src3;
+vbitset_and_or_cmp (bitset dst, bitset src1, bitset src2, bitset src3)
{
unsigned int i;
int changed = 0;
bitset_word *src3p;
bitset_word *dstp;
bitset_windex size;
-
+
if (BITSET_NBITS_ (src1) != BITSET_NBITS_ (src2)
|| BITSET_NBITS_ (src1) != BITSET_NBITS_ (src3))
return bitset_and_or_cmp_ (dst, src1, src2, src3);
src3p = VBITSET_WORDS (src3);
dstp = VBITSET_WORDS (dst);
size = VBITSET_SIZE (dst);
-
+
for (i = 0; i < size; i++, dstp++)
{
bitset_word tmp = (*src1p++ & *src2p++) | *src3p++;
-
+
if (*dstp != tmp)
{
changed = 1;
static void
-vbitset_andn_or (dst, src1, src2, src3)
- bitset dst;
- bitset src1;
- bitset src2;
- bitset src3;
+vbitset_andn_or (bitset dst, bitset src1, bitset src2, bitset src3)
{
unsigned int i;
bitset_word *src1p;
bitset_word *src3p;
bitset_word *dstp;
bitset_windex size;
-
+
if (BITSET_NBITS_ (src1) != BITSET_NBITS_ (src2)
|| BITSET_NBITS_ (src1) != BITSET_NBITS_ (src3))
{
static bool
-vbitset_andn_or_cmp (dst, src1, src2, src3)
- bitset dst;
- bitset src1;
- bitset src2;
- bitset src3;
+vbitset_andn_or_cmp (bitset dst, bitset src1, bitset src2, bitset src3)
{
unsigned int i;
int changed = 0;
bitset_word *src3p;
bitset_word *dstp;
bitset_windex size;
-
+
if (BITSET_NBITS_ (src1) != BITSET_NBITS_ (src2)
|| BITSET_NBITS_ (src1) != BITSET_NBITS_ (src3))
return bitset_andn_or_cmp_ (dst, src1, src2, src3);
src3p = VBITSET_WORDS (src3);
dstp = VBITSET_WORDS (dst);
size = VBITSET_SIZE (dst);
-
+
for (i = 0; i < size; i++, dstp++)
{
bitset_word tmp = (*src1p++ & ~(*src2p++)) | *src3p++;
-
+
if (*dstp != tmp)
{
changed = 1;
static void
-vbitset_or_and (dst, src1, src2, src3)
- bitset dst;
- bitset src1;
- bitset src2;
- bitset src3;
+vbitset_or_and (bitset dst, bitset src1, bitset src2, bitset src3)
{
unsigned int i;
bitset_word *src1p;
bitset_word *src3p;
bitset_word *dstp;
bitset_windex size;
-
+
if (BITSET_NBITS_ (src1) != BITSET_NBITS_ (src2)
|| BITSET_NBITS_ (src1) != BITSET_NBITS_ (src3))
{
src3p = VBITSET_WORDS (src3);
dstp = VBITSET_WORDS (dst);
size = VBITSET_SIZE (dst);
-
+
for (i = 0; i < size; i++)
*dstp++ = (*src1p++ | *src2p++) & *src3p++;
}
static bool
-vbitset_or_and_cmp (dst, src1, src2, src3)
- bitset dst;
- bitset src1;
- bitset src2;
- bitset src3;
+vbitset_or_and_cmp (bitset dst, bitset src1, bitset src2, bitset src3)
{
unsigned int i;
int changed = 0;
bitset_word *src3p;
bitset_word *dstp;
bitset_windex size;
-
+
if (BITSET_NBITS_ (src1) != BITSET_NBITS_ (src2)
|| BITSET_NBITS_ (src1) != BITSET_NBITS_ (src3))
return bitset_or_and_cmp_ (dst, src1, src2, src3);
src3p = VBITSET_WORDS (src3);
dstp = VBITSET_WORDS (dst);
size = VBITSET_SIZE (dst);
-
+
for (i = 0; i < size; i++, dstp++)
{
bitset_word tmp = (*src1p++ | *src2p++) & *src3p++;
-
+
if (*dstp != tmp)
{
changed = 1;
}
-void
-vbitset_copy (dst, src)
- bitset dst;
- bitset src;
+static void
+vbitset_copy (bitset dst, bitset src)
{
if (BITSET_COMPATIBLE_ (dst, src))
vbitset_copy1 (dst, src);
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