/* Functions to support link list bitsets.
- Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2002-2004, 2006, 2009-2010 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 "lbitset.h"
+
#include "obstack.h"
#include <stddef.h>
#include <stdlib.h>
/* Number of words to use for each element. The larger the value the
greater the size of the cache and the shorter the time to find a given bit
but the more memory wasted for sparse bitsets and the longer the time
- to search for set bits.
+ to search for set bits.
The routines that dominate timing profiles are lbitset_elt_find
and lbitset_elt_link, especially when accessing the bits randomly. */
#define OBSTACK_CHUNK_FREE free
#endif
-#if !defined(__GNUC__) || (__GNUC__ < 2)
+#if ! defined __GNUC__ || __GNUC__ < 2
#define __alignof__(type) 0
#endif
switch (mode)
{
+ default:
+ abort ();
+
case LBITSET_FIND:
return 0;
case LBITSET_SUBST:
return &lbitset_zero_elts[0];
-
- default:
- abort ();
}
}
n_bits = BITSET_SIZE_ (dst);
last_bit = n_bits % LBITSET_ELT_BITS;
-
+
if (last_bit)
{
lbitset_elt *elt;
bitset_windex windex;
bitset_word *srcp;
-
+
elt = LBITSET_TAIL (dst);
srcp = elt->words;
windex = n_bits / BITSET_WORD_BITS;
-
- srcp[windex - elt->index] &= ((bitset_word) 1 << last_bit) - 1;
+
+ srcp[windex - elt->index] &= ((bitset_word) 1 << last_bit) - 1;
windex++;
for (; (windex - elt->index) < LBITSET_ELT_WORDS; windex++)
dstp = dtmp->words;
switch (op)
{
+ default:
+ abort ();
+
case BITSET_OP_OR:
for (i = 0; i < LBITSET_ELT_WORDS; i++, dstp++)
{
}
}
break;
-
- default:
- abort ();
}
if (!lbitset_elt_zero_p (dtmp))