/* Functions to support expandable bitsets.
- Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+
+ Copyright (C) 2002-2006, 2009-2012 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
+ This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-*/
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
#include "ebitset.h"
+
#include "obstack.h"
#include <stdlib.h>
#include <string.h>
{
union
{
- bitset_word words[EBITSET_ELT_WORDS]; /* Bits that are set. */
+ bitset_word words[EBITSET_ELT_WORDS]; /* Bits that are set. */
struct ebitset_elt_struct *next;
}
u;
/* Obstack to allocate bitset elements from. */
static struct obstack ebitset_obstack;
static bool ebitset_obstack_init = false;
-static ebitset_elt *ebitset_free_list; /* Free list of bitset elements. */
+static ebitset_elt *ebitset_free_list; /* Free list of bitset elements. */
#define EBITSET_N_ELTS(N) (((N) + EBITSET_ELT_BITS - 1) / EBITSET_ELT_BITS)
#define EBITSET_ELTS(BSET) ((BSET)->e.elts)
/* Disable bitset cache and mark BSET as being zero. */
#define EBITSET_ZERO_SET(BSET) ((BSET)->b.cindex = BITSET_WINDEX_MAX, \
- (BSET)->b.cdata = 0)
+ (BSET)->b.cdata = 0)
#define EBITSET_CACHE_DISABLE(BSET) ((BSET)->b.cindex = BITSET_WINDEX_MAX)
((BSET)->b.cindex = (EINDEX) * EBITSET_ELT_WORDS, \
(BSET)->b.cdata = EBITSET_WORDS (EBITSET_ELTS (BSET) [EINDEX]))
-
+#undef min
+#undef max
#define min(a, b) ((a) > (b) ? (b) : (a))
#define max(a, b) ((a) > (b) ? (a) : (b))
-
static bitset_bindex
ebitset_resize (bitset src, bitset_bindex n_bits)
{
{
bitset_windex size;
- /* The bitset needs to grow. If we already have enough memory
- allocated, then just zero what we need. */
+ /* The bitset needs to grow. If we already have enough memory
+ allocated, then just zero what we need. */
if (newsize > EBITSET_ASIZE (src))
- {
- /* We need to allocate more memory. When oldsize is
- non-zero this means that we are changing the size, so
- grow the bitset 25% larger than requested to reduce
- number of reallocations. */
-
- if (oldsize == 0)
- size = newsize;
- else
- size = newsize + newsize / 4;
-
- EBITSET_ELTS (src)
- = realloc (EBITSET_ELTS (src), size * sizeof (ebitset_elt *));
- EBITSET_ASIZE (src) = size;
- }
-
- memset (EBITSET_ELTS (src) + oldsize, 0,
- (newsize - oldsize) * sizeof (ebitset_elt *));
+ {
+ /* We need to allocate more memory. When oldsize is
+ non-zero this means that we are changing the size, so
+ grow the bitset 25% larger than requested to reduce
+ number of reallocations. */
+
+ if (oldsize == 0)
+ size = newsize;
+ else
+ size = newsize + newsize / 4;
+
+ EBITSET_ELTS (src)
+ = realloc (EBITSET_ELTS (src), size * sizeof (ebitset_elt *));
+ EBITSET_ASIZE (src) = size;
+ }
+
+ memset (EBITSET_ELTS (src) + oldsize, 0,
+ (newsize - oldsize) * sizeof (ebitset_elt *));
}
else
{
/* The bitset needs to shrink. There's no point deallocating
- the memory unless it is shrinking by a reasonable amount. */
+ the memory unless it is shrinking by a reasonable amount. */
if ((oldsize - newsize) >= oldsize / 2)
- {
- EBITSET_ELTS (src)
- = realloc (EBITSET_ELTS (src), newsize * sizeof (ebitset_elt *));
- EBITSET_ASIZE (src) = newsize;
- }
+ {
+ EBITSET_ELTS (src)
+ = realloc (EBITSET_ELTS (src), newsize * sizeof (ebitset_elt *));
+ EBITSET_ASIZE (src) = newsize;
+ }
/* Need to prune any excess bits. FIXME. */
}
else
{
if (!ebitset_obstack_init)
- {
- ebitset_obstack_init = true;
+ {
+ ebitset_obstack_init = true;
- /* Let particular systems override the size of a chunk. */
+ /* Let particular systems override the size of a chunk. */
#ifndef OBSTACK_CHUNK_SIZE
#define OBSTACK_CHUNK_SIZE 0
#endif
- /* Let them override the alloc and free routines too. */
+ /* Let them override the alloc and free routines too. */
#ifndef OBSTACK_CHUNK_ALLOC
#define OBSTACK_CHUNK_ALLOC xmalloc
#define OBSTACK_CHUNK_FREE free
#endif
-#if !defined(__GNUC__) || (__GNUC__ < 2)
+#if ! defined __GNUC__ || __GNUC__ < 2
#define __alignof__(type) 0
#endif
- obstack_specify_allocation (&ebitset_obstack, OBSTACK_CHUNK_SIZE,
- __alignof__ (ebitset_elt),
- OBSTACK_CHUNK_ALLOC,
- OBSTACK_CHUNK_FREE);
- }
+ obstack_specify_allocation (&ebitset_obstack, OBSTACK_CHUNK_SIZE,
+ __alignof__ (ebitset_elt),
+ OBSTACK_CHUNK_ALLOC,
+ OBSTACK_CHUNK_FREE);
+ }
/* Perhaps we should add a number of new elements to the free
- list. */
+ list. */
elt = (ebitset_elt *) obstack_alloc (&ebitset_obstack,
- sizeof (ebitset_elt));
+ sizeof (ebitset_elt));
}
return elt;
static ebitset_elt *
ebitset_elt_find (bitset bset, bitset_bindex bindex,
- enum ebitset_find_mode mode)
+ enum ebitset_find_mode mode)
{
ebitset_elt *elt;
bitset_windex size;
if (eindex < size)
{
if ((elt = elts[eindex]))
- {
- if (EBITSET_WORDS (elt) == bset->b.cdata)
- return elt;
+ {
+ if (EBITSET_WORDS (elt) == bset->b.cdata)
+ return elt;
- EBITSET_CACHE_SET (bset, eindex);
- return elt;
- }
+ EBITSET_CACHE_SET (bset, eindex);
+ return elt;
+ }
}
/* The element could not be found. */
switch (mode)
{
+ default:
+ abort ();
+
case EBITSET_FIND:
return 0;
case EBITSET_CREATE:
if (eindex >= size)
- ebitset_resize (bset, bindex);
+ ebitset_resize (bset, bindex);
/* Create a new element. */
elt = ebitset_elt_calloc ();
case EBITSET_SUBST:
return &ebitset_zero_elts[0];
-
- default:
- abort ();
}
}
ebitset_elt *elt = elts[j];
if (elt)
- {
- if (ebitset_elt_zero_p (elt))
- {
- ebitset_elt_remove (bset, j);
- count++;
- }
- }
+ {
+ if (ebitset_elt_zero_p (elt))
+ {
+ ebitset_elt_remove (bset, j);
+ count++;
+ }
+ }
else
- count++;
+ count++;
}
count = j - count;
if (!count)
{
/* All the bits are zero. We could shrink the elts.
- For now just mark BSET as known to be zero. */
+ For now just mark BSET as known to be zero. */
EBITSET_ZERO_SET (bset);
}
else
ebitset_elt *elt = elts[j];
if (elt)
- ebitset_elt_remove (bset, j);
+ ebitset_elt_remove (bset, j);
}
/* All the bits are zero. We could shrink the elts.
ebitset_elt *delt = delts[j];
if (!selt && !delt)
- continue;
+ continue;
if ((selt && !delt) || (!selt && delt))
- return false;
+ return false;
for (i = 0; i < EBITSET_ELT_WORDS; i++)
- if (EBITSET_WORDS (selt)[i] != EBITSET_WORDS (delt)[i])
- return false;
+ if (EBITSET_WORDS (selt)[i] != EBITSET_WORDS (delt)[i])
+ return false;
}
return true;
}
ebitset_elt *selt = selts[j];
if (selt)
- {
- ebitset_elt *tmp;
-
- tmp = ebitset_elt_alloc ();
- delts[j] = tmp;
- memcpy (EBITSET_WORDS (tmp), EBITSET_WORDS (selt),
- sizeof (EBITSET_WORDS (selt)));
- }
+ {
+ ebitset_elt *tmp;
+
+ tmp = ebitset_elt_alloc ();
+ delts[j] = tmp;
+ memcpy (EBITSET_WORDS (tmp), EBITSET_WORDS (selt),
+ sizeof (EBITSET_WORDS (selt)));
+ }
}
EBITSET_NONZERO_SET (dst);
}
bitset_windex windex = bitno / BITSET_WORD_BITS;
return (ebitset_elt_find (src, bitno, EBITSET_FIND)
- && ((src->b.cdata[windex - src->b.cindex]
- >> (bitno % BITSET_WORD_BITS))
- & 1));
+ && ((src->b.cdata[windex - src->b.cindex]
+ >> (bitno % BITSET_WORD_BITS))
+ & 1));
}
found and with *NEXT indicating where search stopped. */
static bitset_bindex
ebitset_list_reverse (bitset bset, bitset_bindex *list,
- bitset_bindex num, bitset_bindex *next)
+ bitset_bindex num, bitset_bindex *next)
{
bitset_bindex n_bits;
bitset_bindex bitno;
elt = elts[eindex];
if (elt)
- {
- srcp = EBITSET_WORDS (elt);
-
- do
- {
- bitset_word word;
-
- word = srcp[woffset] << (BITSET_WORD_BITS - 1 - bcount);
-
- for (; word; bcount--)
- {
- if (word & BITSET_MSB)
- {
- list[count++] = boffset + bcount;
- if (count >= num)
- {
- *next = n_bits - (boffset + bcount);
- return count;
- }
- }
- word <<= 1;
- }
- boffset -= BITSET_WORD_BITS;
- bcount = BITSET_WORD_BITS - 1;
- }
- while (woffset--);
- }
+ {
+ srcp = EBITSET_WORDS (elt);
+
+ do
+ {
+ bitset_word word;
+
+ word = srcp[woffset] << (BITSET_WORD_BITS - 1 - bcount);
+
+ for (; word; bcount--)
+ {
+ if (word & BITSET_MSB)
+ {
+ list[count++] = boffset + bcount;
+ if (count >= num)
+ {
+ *next = n_bits - (boffset + bcount);
+ return count;
+ }
+ }
+ word <<= 1;
+ }
+ boffset -= BITSET_WORD_BITS;
+ bcount = BITSET_WORD_BITS - 1;
+ }
+ while (woffset--);
+ }
woffset = EBITSET_ELT_WORDS - 1;
boffset = eindex * EBITSET_ELT_BITS - BITSET_WORD_BITS;
found and with *NEXT indicating where search stopped. */
static bitset_bindex
ebitset_list (bitset bset, bitset_bindex *list,
- bitset_bindex num, bitset_bindex *next)
+ bitset_bindex num, bitset_bindex *next)
{
bitset_bindex bitno;
bitset_windex windex;
elt = elts[eindex];
if (elt)
- {
- bitset_windex woffset;
- bitset_word *srcp = EBITSET_WORDS (elt);
-
- windex = bitno / BITSET_WORD_BITS;
- woffset = eindex * EBITSET_ELT_WORDS;
-
- for (; (windex - woffset) < EBITSET_ELT_WORDS; windex++)
- {
- word = srcp[windex - woffset] >> (bitno % BITSET_WORD_BITS);
-
- for (; word; bitno++)
- {
- if (word & 1)
- {
- list[count++] = bitno;
- if (count >= num)
- {
- *next = bitno + 1;
- return count;
- }
- }
- word >>= 1;
- }
- bitno = (windex + 1) * BITSET_WORD_BITS;
- }
- }
+ {
+ bitset_windex woffset;
+ bitset_word *srcp = EBITSET_WORDS (elt);
+
+ windex = bitno / BITSET_WORD_BITS;
+ woffset = eindex * EBITSET_ELT_WORDS;
+
+ for (; (windex - woffset) < EBITSET_ELT_WORDS; windex++)
+ {
+ word = srcp[windex - woffset] >> (bitno % BITSET_WORD_BITS);
+
+ for (; word; bitno++)
+ {
+ if (word & 1)
+ {
+ list[count++] = bitno;
+ if (count >= num)
+ {
+ *next = bitno + 1;
+ return count;
+ }
+ }
+ word >>= 1;
+ }
+ bitno = (windex + 1) * BITSET_WORD_BITS;
+ }
+ }
/* Skip to next element. */
eindex++;
elt = elts[eindex];
if (!elt)
- continue;
+ continue;
srcp = EBITSET_WORDS (elt);
windex = eindex * EBITSET_ELT_WORDS;
if ((count + EBITSET_ELT_BITS) < num)
- {
- /* The coast is clear, plant boot! */
+ {
+ /* The coast is clear, plant boot! */
#if EBITSET_ELT_WORDS == 2
- word = srcp[0];
- if (word)
- {
- if (!(word & 0xffff))
- {
- word >>= 16;
- bitno += 16;
- }
- if (!(word & 0xff))
- {
- word >>= 8;
- bitno += 8;
- }
- for (; word; bitno++)
- {
- if (word & 1)
- list[count++] = bitno;
- word >>= 1;
- }
- }
- windex++;
- bitno = windex * BITSET_WORD_BITS;
-
- word = srcp[1];
- if (word)
- {
- if (!(word & 0xffff))
- {
- word >>= 16;
- bitno += 16;
- }
- for (; word; bitno++)
- {
- if (word & 1)
- list[count++] = bitno;
- word >>= 1;
- }
- }
- windex++;
- bitno = windex * BITSET_WORD_BITS;
+ word = srcp[0];
+ if (word)
+ {
+ if (!(word & 0xffff))
+ {
+ word >>= 16;
+ bitno += 16;
+ }
+ if (!(word & 0xff))
+ {
+ word >>= 8;
+ bitno += 8;
+ }
+ for (; word; bitno++)
+ {
+ if (word & 1)
+ list[count++] = bitno;
+ word >>= 1;
+ }
+ }
+ windex++;
+ bitno = windex * BITSET_WORD_BITS;
+
+ word = srcp[1];
+ if (word)
+ {
+ if (!(word & 0xffff))
+ {
+ word >>= 16;
+ bitno += 16;
+ }
+ for (; word; bitno++)
+ {
+ if (word & 1)
+ list[count++] = bitno;
+ word >>= 1;
+ }
+ }
+ windex++;
+ bitno = windex * BITSET_WORD_BITS;
#else
- for (i = 0; i < EBITSET_ELT_WORDS; i++, windex++)
- {
- bitno = windex * BITSET_WORD_BITS;
-
- word = srcp[i];
- if (word)
- {
- if (!(word & 0xffff))
- {
- word >>= 16;
- bitno += 16;
- }
- if (!(word & 0xff))
- {
- word >>= 8;
- bitno += 8;
- }
- for (; word; bitno++)
- {
- if (word & 1)
- list[count++] = bitno;
- word >>= 1;
- }
- }
- }
+ for (i = 0; i < EBITSET_ELT_WORDS; i++, windex++)
+ {
+ bitno = windex * BITSET_WORD_BITS;
+
+ word = srcp[i];
+ if (word)
+ {
+ if (!(word & 0xffff))
+ {
+ word >>= 16;
+ bitno += 16;
+ }
+ if (!(word & 0xff))
+ {
+ word >>= 8;
+ bitno += 8;
+ }
+ for (; word; bitno++)
+ {
+ if (word & 1)
+ list[count++] = bitno;
+ word >>= 1;
+ }
+ }
+ }
#endif
- }
+ }
else
- {
- /* Tread more carefully since we need to check
- if array overflows. */
-
- for (i = 0; i < EBITSET_ELT_WORDS; i++, windex++)
- {
- bitno = windex * BITSET_WORD_BITS;
-
- for (word = srcp[i]; word; bitno++)
- {
- if (word & 1)
- {
- list[count++] = bitno;
- if (count >= num)
- {
- *next = bitno + 1;
- return count;
- }
- }
- word >>= 1;
- }
- }
- }
+ {
+ /* Tread more carefully since we need to check
+ if array overflows. */
+
+ for (i = 0; i < EBITSET_ELT_WORDS; i++, windex++)
+ {
+ bitno = windex * BITSET_WORD_BITS;
+
+ for (word = srcp[i]; word; bitno++)
+ {
+ if (word & 1)
+ {
+ list[count++] = bitno;
+ if (count >= num)
+ {
+ *next = bitno + 1;
+ return count;
+ }
+ }
+ word >>= 1;
+ }
+ }
+ }
}
*next = bitno;
{
unsigned int last_bit;
bitset_bindex n_bits;
-
+
n_bits = BITSET_NBITS_ (dst);
last_bit = n_bits % EBITSET_ELT_BITS;
-
+
if (last_bit)
{
bitset_windex eindex;
ebitset_elt *elt;
elts = EBITSET_ELTS (dst);
-
+
eindex = n_bits / EBITSET_ELT_BITS;
-
+
elt = elts[eindex];
if (elt)
- {
- bitset_windex windex;
- bitset_windex woffset;
- bitset_word *srcp = EBITSET_WORDS (elt);
-
- windex = n_bits / BITSET_WORD_BITS;
- woffset = eindex * EBITSET_ELT_WORDS;
-
- srcp[windex - woffset] &= ((bitset_word) 1 << last_bit) - 1;
- windex++;
- for (; (windex - woffset) < EBITSET_ELT_WORDS; windex++)
- srcp[windex - woffset] = 0;
- }
+ {
+ bitset_windex windex;
+ bitset_windex woffset;
+ bitset_word *srcp = EBITSET_WORDS (elt);
+
+ windex = n_bits / BITSET_WORD_BITS;
+ woffset = eindex * EBITSET_ELT_WORDS;
+
+ srcp[windex - woffset] &= ((bitset_word) 1 << last_bit) - 1;
+ windex++;
+ for (; (windex - woffset) < EBITSET_ELT_WORDS; windex++)
+ srcp[windex - woffset] = 0;
+ }
}
}
for (j = 0; j < EBITSET_SIZE (dst); j++)
{
/* Create new elements if they cannot be found. Perhaps
- we should just add pointers to a ones element? */
+ we should just add pointers to a ones element? */
elt =
- ebitset_elt_find (dst, j * EBITSET_ELT_BITS, EBITSET_CREATE);
+ ebitset_elt_find (dst, j * EBITSET_ELT_BITS, EBITSET_CREATE);
memset (EBITSET_WORDS (elt), -1, sizeof (EBITSET_WORDS (elt)));
}
EBITSET_NONZERO_SET (dst);
ebitset_elt *elt = elts[j];
if (elt)
- {
- if (!ebitset_elt_zero_p (elt))
- return 0;
- /* Do some weeding as we go. */
- ebitset_elt_remove (dst, j);
- }
+ {
+ if (!ebitset_elt_zero_p (elt))
+ return 0;
+ /* Do some weeding as we go. */
+ ebitset_elt_remove (dst, j);
+ }
}
/* All the bits are zero. We could shrink the elts.
for (j = 0; j < EBITSET_SIZE (src); j++)
{
/* Create new elements for dst if they cannot be found
- or substitute zero elements if src elements not found. */
+ or substitute zero elements if src elements not found. */
selt =
- ebitset_elt_find (dst, j * EBITSET_ELT_BITS, EBITSET_SUBST);
+ ebitset_elt_find (dst, j * EBITSET_ELT_BITS, EBITSET_SUBST);
delt =
- ebitset_elt_find (dst, j * EBITSET_ELT_BITS, EBITSET_CREATE);
+ ebitset_elt_find (dst, j * EBITSET_ELT_BITS, EBITSET_CREATE);
for (i = 0; i < EBITSET_ELT_WORDS; i++)
- EBITSET_WORDS (delt)[i] = ~EBITSET_WORDS (selt)[i];
+ EBITSET_WORDS (delt)[i] = ~EBITSET_WORDS (selt)[i];
}
EBITSET_NONZERO_SET (dst);
ebitset_unused_clear (dst);
delt = j < dsize ? delts[j] : 0;
if (!selt && !delt)
- continue;
+ continue;
if (!selt)
- selt = &ebitset_zero_elts[0];
+ selt = &ebitset_zero_elts[0];
if (!delt)
- delt = &ebitset_zero_elts[0];
+ delt = &ebitset_zero_elts[0];
for (i = 0; i < EBITSET_ELT_WORDS; i++)
- if (EBITSET_WORDS (delt)[i]
- != (EBITSET_WORDS (selt)[i] | EBITSET_WORDS (delt)[i]))
- return false;
+ if (EBITSET_WORDS (delt)[i]
+ != (EBITSET_WORDS (selt)[i] | EBITSET_WORDS (delt)[i]))
+ return false;
}
return true;
}
delt = j < dsize ? delts[j] : 0;
if (!selt || !delt)
- continue;
+ continue;
for (i = 0; i < EBITSET_ELT_WORDS; i++)
- if ((EBITSET_WORDS (selt)[i] & EBITSET_WORDS (delt)[i]))
- return false;
+ if ((EBITSET_WORDS (selt)[i] & EBITSET_WORDS (delt)[i]))
+ return false;
}
return true;
}
delt = j < dsize ? delts[j] : 0;
if (!selt1 && !selt2)
- {
- if (delt)
- {
- changed = true;
- ebitset_elt_remove (dst, j);
- }
- continue;
- }
+ {
+ if (delt)
+ {
+ changed = true;
+ ebitset_elt_remove (dst, j);
+ }
+ continue;
+ }
if (!selt1)
- selt1 = &ebitset_zero_elts[0];
+ selt1 = &ebitset_zero_elts[0];
if (!selt2)
- selt2 = &ebitset_zero_elts[0];
+ selt2 = &ebitset_zero_elts[0];
if (!delt)
- delt = ebitset_elt_calloc ();
+ delt = ebitset_elt_calloc ();
else
- delts[j] = 0;
+ delts[j] = 0;
srcp1 = EBITSET_WORDS (selt1);
srcp2 = EBITSET_WORDS (selt2);
dstp = EBITSET_WORDS (delt);
switch (op)
- {
- case BITSET_OP_OR:
- for (i = 0; i < EBITSET_ELT_WORDS; i++, dstp++)
- {
- bitset_word tmp = *srcp1++ | *srcp2++;
-
- if (*dstp != tmp)
- {
- changed = true;
- *dstp = tmp;
- }
- }
- break;
-
- case BITSET_OP_AND:
- for (i = 0; i < EBITSET_ELT_WORDS; i++, dstp++)
- {
- bitset_word tmp = *srcp1++ & *srcp2++;
-
- if (*dstp != tmp)
- {
- changed = true;
- *dstp = tmp;
- }
- }
- break;
-
- case BITSET_OP_XOR:
- for (i = 0; i < EBITSET_ELT_WORDS; i++, dstp++)
- {
- bitset_word tmp = *srcp1++ ^ *srcp2++;
-
- if (*dstp != tmp)
- {
- changed = true;
- *dstp = tmp;
- }
- }
- break;
-
- case BITSET_OP_ANDN:
- for (i = 0; i < EBITSET_ELT_WORDS; i++, dstp++)
- {
- bitset_word tmp = *srcp1++ & ~(*srcp2++);
-
- if (*dstp != tmp)
- {
- changed = true;
- *dstp = tmp;
- }
- }
- break;
-
- default:
- abort ();
- }
+ {
+ default:
+ abort ();
+
+ case BITSET_OP_OR:
+ for (i = 0; i < EBITSET_ELT_WORDS; i++, dstp++)
+ {
+ bitset_word tmp = *srcp1++ | *srcp2++;
+
+ if (*dstp != tmp)
+ {
+ changed = true;
+ *dstp = tmp;
+ }
+ }
+ break;
+
+ case BITSET_OP_AND:
+ for (i = 0; i < EBITSET_ELT_WORDS; i++, dstp++)
+ {
+ bitset_word tmp = *srcp1++ & *srcp2++;
+
+ if (*dstp != tmp)
+ {
+ changed = true;
+ *dstp = tmp;
+ }
+ }
+ break;
+
+ case BITSET_OP_XOR:
+ for (i = 0; i < EBITSET_ELT_WORDS; i++, dstp++)
+ {
+ bitset_word tmp = *srcp1++ ^ *srcp2++;
+
+ if (*dstp != tmp)
+ {
+ changed = true;
+ *dstp = tmp;
+ }
+ }
+ break;
+
+ case BITSET_OP_ANDN:
+ for (i = 0; i < EBITSET_ELT_WORDS; i++, dstp++)
+ {
+ bitset_word tmp = *srcp1++ & ~(*srcp2++);
+
+ if (*dstp != tmp)
+ {
+ changed = true;
+ *dstp = tmp;
+ }
+ }
+ break;
+ }
if (!ebitset_elt_zero_p (delt))
- {
- ebitset_elt_add (dst, delt, j);
- }
+ {
+ ebitset_elt_add (dst, delt, j);
+ }
else
- {
- ebitset_elt_free (delt);
- }
+ {
+ ebitset_elt_free (delt);
+ }
}
/* If we have elements of DST left over, free them all. */
delt = delts[j];
if (delt)
- ebitset_elt_remove (dst, j);
+ ebitset_elt_remove (dst, j);
}
EBITSET_NONZERO_SET (dst);
bitset
ebitset_init (bitset bset, bitset_bindex n_bits)
{
- bitset_windex size;
-
bset->b.vtable = &ebitset_vtable;
bset->b.csize = EBITSET_ELT_WORDS;
EBITSET_ZERO_SET (bset);
- size = n_bits ? (n_bits + EBITSET_ELT_BITS - 1) / EBITSET_ELT_BITS
- : EBITSET_INITIAL_SIZE;
-
EBITSET_ASIZE (bset) = 0;
EBITSET_ELTS (bset) = 0;
ebitset_resize (bset, n_bits);
projects / bison.git / blobdiff