/* Generic bitsets.
- Copyright (C) 2002 Free Software Foundation, Inc.
+
+ Copyright (C) 2002-2004, 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
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ 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 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ 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. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef _BITSET_H
#define _BITSET_H
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+/* This file is the public interface to the bitset abstract data type.
+ Only use the functions and macros defined in this file. */
-#define BITSET_STATS 1
-
-# ifndef PARAMS
-# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
-# define PARAMS(Args) Args
-# else
-# define PARAMS(Args) ()
-# endif
-# endif
-
-# ifndef __attribute__
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
-# define __attribute__(x)
-# endif
-# endif
-
-# ifndef ATTRIBUTE_NORETURN
-# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
-# endif
-
-# ifndef ATTRIBUTE_UNUSED
-# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
-# endif
-
-#include "bitset-int.h"
-#include "sbitset.h"
-#include "lbitset.h"
-#include "ebitset.h"
+#include "bbitset.h"
#include "obstack.h"
#include <stdio.h>
-#include "xalloc.h"
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
+/* Attributes used to select a bitset implementation. */
enum bitset_attr {BITSET_FIXED = 1, /* Bitset size fixed. */
- BITSET_VARIABLE = 2, /* Bitset size variable. */
- BITSET_DENSE = 4, /* Bitset dense. */
- BITSET_SPARSE = 8, /* Bitset sparse. */
- BITSET_FRUGAL = 16, /* Prefer most compact. */
- BITSET_GREEDY = 32}; /* Prefer fastest. */
+ BITSET_VARIABLE = 2, /* Bitset size variable. */
+ BITSET_DENSE = 4, /* Bitset dense. */
+ BITSET_SPARSE = 8, /* Bitset sparse. */
+ BITSET_FRUGAL = 16, /* Prefer most compact. */
+ BITSET_GREEDY = 32}; /* Prefer fastest at memory expense. */
typedef unsigned int bitset_attrs;
-/* The elements of these structures should be considered
- to be private. */
-typedef struct bitset_struct
+/* The contents of the union should be considered to be private.
+ While I would like to make this union opaque, it needs to be
+ visible for the inline bit set/test functions, and for delegation
+ to the proper implementation. */
+union bitset_union
{
- struct bitset_ops_struct *ops;
- bitset_windex cindex; /* Cache word index. */
- bitset_windex csize; /* Cache size in words. */
- bitset_word *cdata; /* Cache data pointer. */
- union bitset_data
+ /* This must be the first member of every other structure that is a
+ member of this union. */
+ struct bbitset_struct b; /* Base bitset data. */
+
+ struct abitset_struct
{
- struct sbitset_struct s;
- struct lbitset_struct l;
- struct ebitset_struct e;
- } u;
-} *bitset;
+ struct bbitset_struct b;
+ bitset_word words[1]; /* The array of bits. */
+ } a;
+ struct ebitset_struct
+ {
+ struct bbitset_struct b;
+ bitset_windex size; /* Number of elements. */
+ struct ebitset_elt_struct **elts; /* Expanding array of ptrs to elts. */
+ } e;
+
+ struct lbitset_struct
+ {
+ struct bbitset_struct b;
+ struct lbitset_elt_struct *head; /* First element in linked list. */
+ struct lbitset_elt_struct *tail; /* Last element in linked list. */
+ } l;
+
+ struct bitset_stats_struct
+ {
+ struct bbitset_struct b;
+ bitset bset;
+ } s;
+
+ struct vbitset_struct
+ {
+ struct bbitset_struct b;
+ bitset_windex size; /* Allocated size of array. */
+ } v;
-/* The contents of this structure should be considered private. */
-struct bitset_ops_struct
-{
- void (*set) PARAMS ((struct bitset_struct *, bitset_bindex));
- void (*reset) PARAMS ((struct bitset_struct *, bitset_bindex));
- int (*test) PARAMS ((struct bitset_struct *, bitset_bindex));
- int (*size) PARAMS ((struct bitset_struct *));
- int (*op1) PARAMS ((struct bitset_struct *, enum bitset_ops));
- int (*op2) PARAMS ((struct bitset_struct *, struct bitset_struct *,
- enum bitset_ops));
- int (*op3) PARAMS ((struct bitset_struct *, struct bitset_struct *,
- struct bitset_struct *, enum bitset_ops));
- int (*op4) PARAMS ((struct bitset_struct *, struct bitset_struct *,
- struct bitset_struct *, struct bitset_struct *,
- enum bitset_ops));
- int (*list) PARAMS ((struct bitset_struct *, bitset_bindex *,
- bitset_bindex, bitset_bindex *));
- int (*reverse_list) PARAMS ((struct bitset_struct *, bitset_bindex *,
- bitset_bindex, bitset_bindex *));
- void (*free) PARAMS ((struct bitset_struct *));
- enum bitset_type type;
};
+/* The contents of this structure should be considered private.
+ It is used for iterating over set bits. */
+typedef struct
+{
+ bitset_bindex list[BITSET_LIST_SIZE];
+ bitset_bindex next;
+ bitset_bindex num;
+ bitset_bindex i;
+} bitset_iterator;
+
+
/* Return bytes required for bitset of desired type and size. */
-extern int bitset_bytes PARAMS ((enum bitset_type, bitset_bindex));
+extern size_t bitset_bytes (enum bitset_type, bitset_bindex);
/* Initialise a bitset with desired type and size. */
-extern bitset bitset_init PARAMS ((bitset, bitset_bindex, enum bitset_type));
+extern bitset bitset_init (bitset, bitset_bindex, enum bitset_type);
-extern enum bitset_type bitset_type_choose PARAMS ((bitset_bindex,
- bitset_attrs));
+/* Select an implementation type based on the desired bitset size
+ and attributes. */
+extern enum bitset_type bitset_type_choose (bitset_bindex, bitset_attrs);
-/* Create a bitset of desired type and size. */
-extern bitset bitset_alloc PARAMS ((bitset_bindex, enum bitset_type));
+/* Create a bitset of desired type and size. The bitset is zeroed. */
+extern bitset bitset_alloc (bitset_bindex, enum bitset_type);
/* Free bitset. */
-extern void bitset_free PARAMS ((bitset));
+extern void bitset_free (bitset);
-/* Create a bitset of desired type and size using obstack. */
-extern bitset bitset_obstack_alloc PARAMS ((struct obstack *bobstack,
- bitset_bindex, enum bitset_type));
+/* Create a bitset of desired type and size using an obstack. The
+ bitset is zeroed. */
+extern bitset bitset_obstack_alloc (struct obstack *bobstack,
+ bitset_bindex, enum bitset_type);
/* Free bitset allocated on obstack. */
-extern void bitset_obstack_free PARAMS ((bitset));
+extern void bitset_obstack_free (bitset);
-/* Create a bitset of desired size and attributes. */
-extern bitset bitset_create PARAMS ((bitset_bindex, bitset_attrs));
+/* Create a bitset of desired size and attributes. The bitset is zeroed. */
+extern bitset bitset_create (bitset_bindex, bitset_attrs);
-/* Return size in bits of bitset SRC. */
-extern int bitset_size PARAMS ((bitset));
+/* Return bitset type. */
+extern enum bitset_type bitset_type_get (bitset);
+
+/* Return bitset type name. */
+extern const char *bitset_type_name_get (bitset);
-#if BITSET_CACHE && BITSET_INLINE
-static inline void bitset_set PARAMS ((bitset, bitset_bindex));
-static inline void bitset_reset PARAMS ((bitset, bitset_bindex));
-static inline int bitset_test PARAMS ((bitset, bitset_bindex));
/* Set bit BITNO in bitset BSET. */
-static inline void bitset_set (bset, bitno)
- bitset bset;
- bitset_bindex bitno;
+static inline void
+bitset_set (bitset bset, bitset_bindex bitno)
{
- bitset_windex index = bitno / BITSET_WORD_BITS;
- bitset_windex offset = index - bset->cindex;
+ bitset_windex windex = bitno / BITSET_WORD_BITS;
+ bitset_windex offset = windex - bset->b.cindex;
- if (offset < bset->csize)
- bset->cdata[offset] |= (1 << (bitno % BITSET_WORD_BITS));
+ if (offset < bset->b.csize)
+ bset->b.cdata[offset] |= ((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
else
- BITSET__SET (bset, bitno);
+ BITSET_SET_ (bset, bitno);
}
/* Reset bit BITNO in bitset BSET. */
-static inline void bitset_reset (bset, bitno)
- bitset bset;
- bitset_bindex bitno;
+static inline void
+bitset_reset (bitset bset, bitset_bindex bitno)
{
- bitset_windex index = bitno / BITSET_WORD_BITS;
- bitset_windex offset = index - bset->cindex;
+ bitset_windex windex = bitno / BITSET_WORD_BITS;
+ bitset_windex offset = windex - bset->b.cindex;
- if (offset < bset->csize)
- bset->cdata[offset] &= ~(1 << (bitno % BITSET_WORD_BITS));
+ if (offset < bset->b.csize)
+ bset->b.cdata[offset] &= ~((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
else
- BITSET__RESET (bset, bitno);
+ BITSET_RESET_ (bset, bitno);
}
/* Test bit BITNO in bitset BSET. */
-static inline int bitset_test (bset, bitno)
- bitset bset;
- bitset_bindex bitno;
+static inline bool
+bitset_test (bitset bset, bitset_bindex bitno)
{
- bitset_windex index = bitno / BITSET_WORD_BITS;
- bitset_windex offset = index - bset->cindex;
+ bitset_windex windex = bitno / BITSET_WORD_BITS;
+ bitset_windex offset = windex - bset->b.cindex;
- if (offset < bset->csize)
- return (bset->cdata[offset] >> (bitno % BITSET_WORD_BITS)) & 1;
+ if (offset < bset->b.csize)
+ return (bset->b.cdata[offset] >> (bitno % BITSET_WORD_BITS)) & 1;
else
- return BITSET__TEST (bset, bitno);
+ return BITSET_TEST_ (bset, bitno);
}
-#endif
-#if BITSET_CACHE && ! BITSET_INLINE
-/* Set bit BITNO in bitset BSET. */
-#define bitset_set(bset, bitno) \
-do \
-{ \
- bitset_bindex _bitno = (bitno); \
- bitset_windex _index = _bitno / BITSET_WORD_BITS; \
- bitset_windex _offset = _index - (bset)->cindex; \
- \
- if (_offset < (bset)->csize) \
- (bset)->cdata[_offset] |= (1 << (_bitno % BITSET_WORD_BITS)); \
- else \
- BITSET__SET ((bset), _bitno); \
-} while (0)
+/* Toggle bit BITNO in bitset BSET and return non-zero if now set. */
+#define bitset_toggle(bset, bitno) BITSET_TOGGLE_ (bset, bitno)
+/* Return size in bits of bitset SRC. */
+#define bitset_size(SRC) BITSET_SIZE_ (SRC)
-/* Reset bit BITNO in bitset BSET. */
-#define bitset_reset(bset, bitno) \
-do \
-{ \
- bitset_bindex _bitno = (bitno); \
- bitset_windex _index = _bitno / BITSET_WORD_BITS; \
- bitset_windex _offset = _index - (bset)->cindex; \
- \
- if (_offset < (bset)->csize) \
- (bset)->cdata[_offset] &= ~(1 << (_bitno % BITSET_WORD_BITS)); \
- else \
- BITSET__RESET ((bset), _bitno); \
-} while (0)
+/* Change size of bitset. */
+extern void bitset_resize (bitset, bitset_bindex);
+/* Return number of bits set in bitset SRC. */
+#define bitset_count(SRC) BITSET_COUNT_ (SRC)
-/* Test bit BITNO in bitset BSET. */
-#define bitset_test(bset, bitno) \
-(((((bitno) / BITSET_WORD_BITS) - (bset)->cindex) < (bset)->csize) \
- ? ((bset)->cdata[(((bitno) / BITSET_WORD_BITS) - (bset)->cindex)] \
- >> ((bitno) % BITSET_WORD_BITS)) & 1 \
- : (unsigned int) BITSET__TEST ((bset), (bitno)))
-#endif
-#if ! BITSET_CACHE
-/* Set bit BITNO in bitset SRC. */
-#define bitset_set(SRC, BITNO) BITSET__SET (SRC, BITNO)
+/* Return SRC == 0. */
+#define bitset_empty_p(SRC) BITSET_EMPTY_P_ (SRC)
-/* Reset bit BITNO in bitset SRC. */
-#define bitset_reset(SRC, BITNO) BITSET__RESET (SRC, BITNO)
-
-/* Return non-zero if bit BITNO in bitset SRC is set. */
-#define bitset_test(SRC, BITNO) BITSET__TEST (SRC, BITNO)
-#endif
+/* DST = ~0. */
+#define bitset_ones(DST) BITSET_ONES_ (DST)
/* DST = 0. */
-extern int bitset_zero PARAMS ((bitset));
+#define bitset_zero(DST) BITSET_ZERO_ (DST)
-/* DST = ~0. */
-extern int bitset_ones PARAMS ((bitset));
-/* Return non-zero if all bits in bitset SRC are reset. */
-extern int bitset_empty_p PARAMS ((bitset));
-/* Return DST == DST | SRC. */
-extern int bitset_subset_p PARAMS ((bitset, bitset));
+/* DST = SRC. */
+#define bitset_copy(DST, SRC) BITSET_COPY_ (DST, SRC)
-/* Return DST == SRC. */
-extern int bitset_equal_p PARAMS ((bitset, bitset));
+/* Return DST & SRC == 0. */
+#define bitset_disjoint_p(DST, SRC) BITSET_DISJOINT_P_ (DST, SRC)
-/* DST == SRC. */
-extern int bitset_copy PARAMS ((bitset, bitset));
+/* Return DST == SRC. */
+#define bitset_equal_p(DST, SRC) BITSET_EQUAL_P_ (DST, SRC)
/* DST = ~SRC. */
-extern int bitset_not PARAMS ((bitset, bitset));
+#define bitset_not(DST, SRC) BITSET_NOT_ (DST, SRC)
-/* DST = SRC1 | SRC2. Return non-zero if DST != SRC1 | SRC2. */
-extern int bitset_or PARAMS ((bitset, bitset, bitset));
+/* Return DST == DST | SRC. */
+#define bitset_subset_p(DST, SRC) BITSET_SUBSET_P_ (DST, SRC)
+
+
+
+/* DST = SRC1 & SRC2. */
+#define bitset_and(DST, SRC1, SRC2) BITSET_AND_ (DST, SRC1, SRC2)
/* DST = SRC1 & SRC2. Return non-zero if DST != SRC1 & SRC2. */
-extern int bitset_and PARAMS ((bitset, bitset, bitset));
+#define bitset_and_cmp(DST, SRC1, SRC2) BITSET_AND_CMP_ (DST, SRC1, SRC2)
-/* DST = SRC1 ^ SRC2. Return non-zero if DST != SRC1 ^ SRC2. */
-extern int bitset_xor PARAMS ((bitset, bitset, bitset));
+/* DST = SRC1 & ~SRC2. */
+#define bitset_andn(DST, SRC1, SRC2) BITSET_ANDN_ (DST, SRC1, SRC2)
/* DST = SRC1 & ~SRC2. Return non-zero if DST != SRC1 & ~SRC2. */
-extern int bitset_andn PARAMS ((bitset, bitset, bitset));
+#define bitset_andn_cmp(DST, SRC1, SRC2) BITSET_ANDN_CMP_ (DST, SRC1, SRC2)
-/* DST = SRC1 | ~SRC2. Return non-zero if DST != SRC1 | ~SRC2. */
-extern int bitset_orn PARAMS ((bitset, bitset, bitset));
+/* DST = SRC1 | SRC2. */
+#define bitset_or(DST, SRC1, SRC2) BITSET_OR_ (DST, SRC1, SRC2)
-/* DST = (SRC1 | SRC2) & SRC3. Return non-zero if
- DST != (SRC1 | SRC2) & SRC3. */
-extern int bitset_or_and PARAMS ((bitset, bitset, bitset, bitset));
+/* DST = SRC1 | SRC2. Return non-zero if DST != SRC1 | SRC2. */
+#define bitset_or_cmp(DST, SRC1, SRC2) BITSET_OR_CMP_ (DST, SRC1, SRC2)
+
+/* DST = SRC1 ^ SRC2. */
+#define bitset_xor(DST, SRC1, SRC2) BITSET_XOR_ (DST, SRC1, SRC2)
+
+/* DST = SRC1 ^ SRC2. Return non-zero if DST != SRC1 ^ SRC2. */
+#define bitset_xor_cmp(DST, SRC1, SRC2) BITSET_XOR_CMP_ (DST, SRC1, SRC2)
+
+
+
+/* DST = (SRC1 & SRC2) | SRC3. */
+#define bitset_and_or(DST, SRC1, SRC2, SRC3) \
+ BITSET_AND_OR_ (DST, SRC1, SRC2, SRC3)
/* DST = (SRC1 & SRC2) | SRC3. Return non-zero if
DST != (SRC1 & SRC2) | SRC3. */
-extern int bitset_and_or PARAMS ((bitset, bitset, bitset, bitset));
+#define bitset_and_or_cmp(DST, SRC1, SRC2, SRC3) \
+ BITSET_AND_OR_CMP_ (DST, SRC1, SRC2, SRC3)
+
+/* DST = (SRC1 & ~SRC2) | SRC3. */
+#define bitset_andn_or(DST, SRC1, SRC2, SRC3) \
+ BITSET_ANDN_OR_ (DST, SRC1, SRC2, SRC3)
/* DST = (SRC1 & ~SRC2) | SRC3. Return non-zero if
DST != (SRC1 & ~SRC2) | SRC3. */
-#define bitset_andn_or(DST, SRC1, SRC2, SRC3) \
+#define bitset_andn_or_cmp(DST, SRC1, SRC2, SRC3) \
+ BITSET_ANDN_OR_CMP_ (DST, SRC1, SRC2, SRC3)
-/* Find next bit set in BSET starting from and including BITNO. */
-extern int bitset_next PARAMS ((bitset, bitset_bindex));
+/* DST = (SRC1 | SRC2) & SRC3. */
+#define bitset_or_and(DST, SRC1, SRC2, SRC3)\
+ BITSET_OR_AND_ (DST, SRC1, SRC2, SRC3)
-/* Find previous bit set in BSET starting from and including BITNO. */
-extern int bitset_prev PARAMS ((bitset, bitset_bindex));
+/* DST = (SRC1 | SRC2) & SRC3. Return non-zero if
+ DST != (SRC1 | SRC2) & SRC3. */
+#define bitset_or_and_cmp(DST, SRC1, SRC2, SRC3)\
+ BITSET_OR_AND_CMP_ (DST, SRC1, SRC2, SRC3)
/* Find list of up to NUM bits set in BSET starting from and including
*NEXT. Return with actual number of bits found and with *NEXT
indicating where search stopped. */
-#if BITSET_STATS
-extern int bitset_list PARAMS ((bitset, bitset_bindex *, bitset_bindex,
- bitset_bindex *));
-#else
#define bitset_list(BSET, LIST, NUM, NEXT) \
-BITSET__LIST (BSET, LIST, NUM, NEXT)
-#endif
+ BITSET_LIST_ (BSET, LIST, NUM, NEXT)
/* Find reverse list of up to NUM bits set in BSET starting from and
including NEXT. Return with actual number of bits found and with
*NEXT indicating where search stopped. */
-#define bitset_reverse_list(BSET, LIST, NUM, NEXT) \
-BITSET__REVERSE_LIST (BSET, LIST, NUM, NEXT)
+#define bitset_list_reverse(BSET, LIST, NUM, NEXT) \
+ BITSET_LIST_REVERSE_ (BSET, LIST, NUM, NEXT)
+
+/* Return true if both bitsets are of the same type and size. */
+extern bool bitset_compatible_p (bitset bset1, bitset bset2);
+
+/* Find next set bit from the given bit index. */
+extern bitset_bindex bitset_next (bitset, bitset_bindex);
+
+/* Find previous set bit from the given bit index. */
+extern bitset_bindex bitset_prev (bitset, bitset_bindex);
/* Find first set bit. */
-extern int bitset_first PARAMS ((bitset));
+extern bitset_bindex bitset_first (bitset);
/* Find last set bit. */
-extern int bitset_last PARAMS ((bitset));
+extern bitset_bindex bitset_last (bitset);
+
+/* Return nonzero if this is the only set bit. */
+extern bool bitset_only_set_p (bitset, bitset_bindex);
/* Dump bitset. */
-extern void bitset_dump PARAMS ((FILE *, bitset));
-
-/* Loop over all elements of BSET, starting with MIN, executing CODE. */
-#define BITSET_EXECUTE(BSET, MIN, N, CODE) \
-do { \
- bitset_bindex _list[BITSET_LIST_SIZE]; \
- bitset_bindex _next = (MIN); \
- int _num; \
- \
- while ((_num = bitset_list ((BSET), _list, BITSET_LIST_SIZE, &_next)))\
- { \
- int _i; \
- \
- for (_i = 0; _i < _num; _i++) \
- { \
- (N) = _list[_i]; \
- CODE; \
- } \
- if (_num < BITSET_LIST_SIZE) \
- break; \
- } \
-} while (0)
+extern void bitset_dump (FILE *, bitset);
+
+/* Loop over all elements of BSET, starting with MIN, setting INDEX
+ to the index of each set bit. For example, the following will print
+ the bits set in a bitset:
+
+ bitset_bindex i;
+ bitset_iterator iter;
+
+ BITSET_FOR_EACH (iter, src, i, 0)
+ {
+ printf ("%lu ", (unsigned long int) i);
+ };
+*/
+#define BITSET_FOR_EACH(ITER, BSET, INDEX, MIN) \
+ for (ITER.next = (MIN), ITER.num = BITSET_LIST_SIZE; \
+ (ITER.num == BITSET_LIST_SIZE) \
+ && (ITER.num = bitset_list (BSET, ITER.list, \
+ BITSET_LIST_SIZE, &ITER.next));) \
+ for (ITER.i = 0; \
+ ITER.i < ITER.num && ((INDEX) = ITER.list[ITER.i], 1); \
+ ITER.i++)
/* Loop over all elements of BSET, in reverse order starting with
- MIN, executing CODE. */
-#define BITSET_REVERSE_EXECUTE(BSET, MIN, N, CODE) \
-do { \
- bitset_bindex _list[BITSET_LIST_SIZE]; \
- bitset_bindex _next = (MIN); \
- int _num; \
- \
- while ((_num = bitset_reverse_list ((BSET), _list, \
- BITSET_LIST_SIZE, &_next))) \
- { \
- int _i; \
- \
- for (_i = 0; _i < _num; _i++) \
- { \
- (N) = _list[_i]; \
- CODE; \
- } \
- if (_num < BITSET_LIST_SIZE) \
- break; \
- } \
-} while (0)
-
-
-/* Define set operations in terms of bit operations. */
-
-#define bitset_diff(DST, SRC1, SRC2) bitset_andn (DST, SRC1, SRC2)
-
-#define bitset_intersection(DST, SRC1, SRC2) bitset_and (DST, SRC1, SRC2)
-
-#define bitset_union(DST, SRC1, SRC2) bitset_or (DST, SRC1, SRC2)
+ MIN, setting INDEX to the index of each set bit. For example, the
+ following will print the bits set in a bitset in reverse order:
+
+ bitset_bindex i;
+ bitset_iterator iter;
+
+ BITSET_FOR_EACH_REVERSE (iter, src, i, 0)
+ {
+ printf ("%lu ", (unsigned long int) i);
+ };
+*/
+#define BITSET_FOR_EACH_REVERSE(ITER, BSET, INDEX, MIN) \
+ for (ITER.next = (MIN), ITER.num = BITSET_LIST_SIZE; \
+ (ITER.num == BITSET_LIST_SIZE) \
+ && (ITER.num = bitset_list_reverse (BSET, ITER.list, \
+ BITSET_LIST_SIZE, &ITER.next));) \
+ for (ITER.i = 0; \
+ ITER.i < ITER.num && ((INDEX) = ITER.list[ITER.i], 1); \
+ ITER.i++)
+
+
+/* Define set operations in terms of logical operations. */
+
+#define bitset_diff(DST, SRC1, SRC2) bitset_andn (DST, SRC1, SRC2)
+#define bitset_diff_cmp(DST, SRC1, SRC2) bitset_andn_cmp (DST, SRC1, SRC2)
+
+#define bitset_intersection(DST, SRC1, SRC2) bitset_and (DST, SRC1, SRC2)
+#define bitset_intersection_cmp(DST, SRC1, SRC2) bitset_and_cmp (DST, SRC1, SRC2)
+#define bitset_union(DST, SRC1, SRC2) bitset_or (DST, SRC1, SRC2)
+#define bitset_union_cmp(DST, SRC1, SRC2) bitset_or_cmp (DST, SRC1, SRC2)
+
+/* Symmetrical difference. */
+#define bitset_symdiff(DST, SRC1, SRC2) bitset_xor (DST, SRC1, SRC2)
+#define bitset_symdiff_cmp(DST, SRC1, SRC2) bitset_xor_cmp (DST, SRC1, SRC2)
+
+/* Union of difference. */
#define bitset_diff_union(DST, SRC1, SRC2, SRC3) \
-bitset_andn_or (DST, SRC1, SRC2, SRC3)
+ bitset_andn_or (DST, SRC1, SRC2, SRC3)
+#define bitset_diff_union_cmp(DST, SRC1, SRC2, SRC3) \
+ bitset_andn_or_cmp (DST, SRC1, SRC2, SRC3)
+
/* Release any memory tied up with bitsets. */
-extern void bitset_release_memory PARAMS ((void));
+extern void bitset_release_memory (void);
-/* Initialise bitset stats. */
-extern void bitset_stats_init PARAMS ((void));
+/* Enable bitset stats gathering. */
+extern void bitset_stats_enable (void);
-/* Dump bitset stats. */
-extern void bitset_stats_dump PARAMS ((FILE *));
+/* Disable bitset stats gathering. */
+extern void bitset_stats_disable (void);
-/* Function to debug bitset from debugger. */
-extern void debug_bitset PARAMS ((bitset));
+/* Read bitset stats file of accummulated stats. */
+void bitset_stats_read (const char *file_name);
-/* Function to debug bitset stats from debugger. */
-extern void debug_bitset_stats PARAMS ((void));
+/* Write bitset stats file of accummulated stats. */
+void bitset_stats_write (const char *file_name);
-extern bitset sbitset_init PARAMS ((bitset, bitset_bindex));
+/* Dump bitset stats. */
+extern void bitset_stats_dump (FILE *);
-extern bitset lbitset_init PARAMS ((bitset, bitset_bindex));
+/* Function to debug bitset from debugger. */
+extern void debug_bitset (bitset);
-extern bitset ebitset_init PARAMS ((bitset, bitset_bindex));
+/* Function to debug bitset stats from debugger. */
+extern void debug_bitset_stats (void);
#endif /* _BITSET_H */
projects / bison.git / blobdiff