[bison.git] / lib / bitset.h

/* Generic bitsets.
   Copyright (C) 2002, 2003, 2004, 2009 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 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.

   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

/* This file is the public interface to the bitset abstract data type.
   Only use the functions and macros defined in this file.  */

#include "bbitset.h"
#include "obstack.h"
#include <stdio.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 at memory expense.  */

typedef unsigned int bitset_attrs;

/* 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
{
  /* 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 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.
   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 size_t bitset_bytes (enum bitset_type, bitset_bindex);

/* Initialise a bitset with desired type and size.  */
extern bitset bitset_init (bitset, bitset_bindex, enum bitset_type);

/* 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.  The bitset is zeroed.  */
extern bitset bitset_alloc (bitset_bindex, enum bitset_type);

/* Free bitset.  */
extern void bitset_free (bitset);

/* 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 (bitset);

/* Create a bitset of desired size and attributes.  The bitset is zeroed.  */
extern bitset bitset_create (bitset_bindex, bitset_attrs);

/* Return bitset type.  */
extern enum bitset_type bitset_type_get (bitset);

/* Return bitset type name.  */
extern const char *bitset_type_name_get (bitset);


/* Set bit BITNO in bitset BSET.  */
static inline void
bitset_set (bitset bset, bitset_bindex bitno)
{
  bitset_windex windex = bitno / BITSET_WORD_BITS;
  bitset_windex offset = windex - bset->b.cindex;

  if (offset < bset->b.csize)
    bset->b.cdata[offset] |= ((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
  else
    BITSET_SET_ (bset, bitno);
}


/* Reset bit BITNO in bitset BSET.  */
static inline void
bitset_reset (bitset bset, bitset_bindex bitno)
{
  bitset_windex windex = bitno / BITSET_WORD_BITS;
  bitset_windex offset = windex - bset->b.cindex;

  if (offset < bset->b.csize)
    bset->b.cdata[offset] &= ~((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
  else
    BITSET_RESET_ (bset, bitno);
}


/* Test bit BITNO in bitset BSET.  */
static inline bool
bitset_test (bitset bset, bitset_bindex bitno)
{
  bitset_windex windex = bitno / BITSET_WORD_BITS;
  bitset_windex offset = windex - bset->b.cindex;

  if (offset < bset->b.csize)
    return (bset->b.cdata[offset] >> (bitno % BITSET_WORD_BITS)) & 1;
  else
    return BITSET_TEST_ (bset, bitno);
}


/* 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)

/* 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)


/* Return SRC == 0.  */
#define bitset_empty_p(SRC) BITSET_EMPTY_P_ (SRC)

/* DST = ~0.  */
#define bitset_ones(DST) BITSET_ONES_ (DST)

/* DST = 0.  */
#define bitset_zero(DST) BITSET_ZERO_ (DST)


/* DST = SRC.  */
#define bitset_copy(DST, SRC) BITSET_COPY_ (DST, SRC)

/* Return DST & SRC == 0.  */
#define bitset_disjoint_p(DST, SRC) BITSET_DISJOINT_P_ (DST, SRC)

/* Return DST == SRC.  */
#define bitset_equal_p(DST, SRC) BITSET_EQUAL_P_ (DST, SRC)

/* DST = ~SRC.  */
#define bitset_not(DST, SRC) BITSET_NOT_ (DST, SRC)

/* 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.  */
#define bitset_and_cmp(DST, SRC1, SRC2) BITSET_AND_CMP_ (DST, SRC1, SRC2)

/* DST = SRC1 & ~SRC2.  */
#define bitset_andn(DST, SRC1, SRC2) BITSET_ANDN_ (DST, SRC1, SRC2)

/* DST = SRC1 & ~SRC2.  Return non-zero if DST != SRC1 & ~SRC2.  */
#define bitset_andn_cmp(DST, SRC1, SRC2) BITSET_ANDN_CMP_ (DST, SRC1, SRC2)

/* DST = SRC1 | SRC2.  */
#define bitset_or(DST, SRC1, SRC2) BITSET_OR_ (DST, SRC1, SRC2)

/* 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.  */
#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_cmp(DST, SRC1, SRC2, SRC3) \
 BITSET_ANDN_OR_CMP_ (DST, SRC1, SRC2, SRC3)

/* DST = (SRC1 | SRC2) & SRC3.  */
#define bitset_or_and(DST, SRC1, SRC2, SRC3)\
 BITSET_OR_AND_ (DST, SRC1, SRC2, SRC3)

/* 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.  */
#define bitset_list(BSET, LIST, NUM, NEXT) \
 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_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 bitset_bindex bitset_first (bitset);

/* Find last set bit.  */
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 (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, 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)
#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 (void);

/* Enable bitset stats gathering.  */
extern void bitset_stats_enable (void);

/* Disable bitset stats gathering.  */
extern void bitset_stats_disable (void);

/* Read bitset stats file of accummulated stats.  */
void bitset_stats_read (const char *file_name);

/* Write bitset stats file of accummulated stats.  */
void bitset_stats_write (const char *file_name);

/* Dump bitset stats.  */
extern void bitset_stats_dump (FILE *);

/* Function to debug bitset from debugger.  */
extern void debug_bitset (bitset);

/* Function to debug bitset stats from debugger.  */
extern void debug_bitset_stats (void);

#endif /* _BITSET_H  */
Commit	Line	Data
7086e707	1	/* Generic bitsets.
401b73af	2	Copyright (C) 2002, 2003, 2004, 2009 Free Software Foundation, Inc.
7086e707 AD	3	Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
7086e707 AD	4
f16b0819 PE	5	This program is free software: you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation, either version 3 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program. If not, see <http://www.gnu.org/licenses/>. */
7086e707 AD	17
7086e707 AD	18	#ifndef _BITSET_H
04af9e52	19	#define _BITSET_H
7086e707	20
ef017502 AD	21	/* This file is the public interface to the bitset abstract data type.
ef017502 AD	22	Only use the functions and macros defined in this file. */
7086e707	23
ef017502	24	#include "bbitset.h"
7086e707 AD	25	#include "obstack.h"
7086e707 AD	26	#include <stdio.h>
7086e707	27
fb9c0b33 PE	28	#if USE_UNLOCKED_IO
	29	# include "unlocked-io.h"
	30	#endif
	31
ef017502	32	/* Attributes used to select a bitset implementation. */
7086e707 AD	33	enum bitset_attr {BITSET_FIXED = 1, /* Bitset size fixed. */
	34	BITSET_VARIABLE = 2, /* Bitset size variable. */
	35	BITSET_DENSE = 4, /* Bitset dense. */
	36	BITSET_SPARSE = 8, /* Bitset sparse. */
	37	BITSET_FRUGAL = 16, /* Prefer most compact. */
6aa452a6	38	BITSET_GREEDY = 32}; /* Prefer fastest at memory expense. */
7086e707 AD	39
	40	typedef unsigned int bitset_attrs;
	41
47c8386f PE	42	/* The contents of the union should be considered to be private.
	43	While I would like to make this union opaque, it needs to be
	44	visible for the inline bit set/test functions, and for delegation
	45	to the proper implementation. */
	46	union bitset_union
7086e707	47	{
47c8386f PE	48	/* This must be the first member of every other structure that is a
47c8386f PE	49	member of this union. */
144c1e76	50	struct bbitset_struct b; /* Base bitset data. */
47c8386f PE	51
	52	struct abitset_struct
	53	{
	54	struct bbitset_struct b;
47c8386f PE	55	bitset_word words[1]; /* The array of bits. */
	56	} a;
	57
	58	struct ebitset_struct
	59	{
	60	struct bbitset_struct b;
	61	bitset_windex size; /* Number of elements. */
	62	struct ebitset_elt_struct *elts; / Expanding array of ptrs to elts. */
	63	} e;
	64
	65	struct lbitset_struct
	66	{
	67	struct bbitset_struct b;
	68	struct lbitset_elt_struct head; / First element in linked list. */
	69	struct lbitset_elt_struct tail; / Last element in linked list. */
	70	} l;
	71
	72	struct bitset_stats_struct
	73	{
	74	struct bbitset_struct b;
	75	bitset bset;
	76	} s;
144c1e76 PE	77
	78	struct vbitset_struct
	79	{
	80	struct bbitset_struct b;
	81	bitset_windex size; /* Allocated size of array. */
	82	} v;
	83
7086e707 AD	84	};
7086e707 AD	85
613f5e1a AD	86
	87	/* The contents of this structure should be considered private.
	88	It is used for iterating over set bits. */
	89	typedef struct
	90	{
	91	bitset_bindex list[BITSET_LIST_SIZE];
	92	bitset_bindex next;
808a5918 PE	93	bitset_bindex num;
808a5918 PE	94	bitset_bindex i;
613f5e1a AD	95	} bitset_iterator;
	96
	97
7086e707	98	/* Return bytes required for bitset of desired type and size. */
7d7d6663	99	extern size_t bitset_bytes (enum bitset_type, bitset_bindex);
7086e707 AD	100
7086e707 AD	101	/* Initialise a bitset with desired type and size. */
7d7d6663	102	extern bitset bitset_init (bitset, bitset_bindex, enum bitset_type);
7086e707	103
ef017502 AD	104	/* Select an implementation type based on the desired bitset size
ef017502 AD	105	and attributes. */
7d7d6663	106	extern enum bitset_type bitset_type_choose (bitset_bindex, bitset_attrs);
7086e707	107
ef017502	108	/* Create a bitset of desired type and size. The bitset is zeroed. */
7d7d6663	109	extern bitset bitset_alloc (bitset_bindex, enum bitset_type);
7086e707 AD	110
7086e707 AD	111	/* Free bitset. */
7d7d6663	112	extern void bitset_free (bitset);
7086e707	113
ef017502 AD	114	/* Create a bitset of desired type and size using an obstack. The
ef017502 AD	115	bitset is zeroed. */
7d7d6663 PE	116	extern bitset bitset_obstack_alloc (struct obstack *bobstack,
7d7d6663 PE	117	bitset_bindex, enum bitset_type);
7086e707 AD	118
7086e707 AD	119	/* Free bitset allocated on obstack. */
7d7d6663	120	extern void bitset_obstack_free (bitset);
7086e707	121
ef017502	122	/* Create a bitset of desired size and attributes. The bitset is zeroed. */
7d7d6663	123	extern bitset bitset_create (bitset_bindex, bitset_attrs);
7086e707	124
613f5e1a	125	/* Return bitset type. */
7d7d6663	126	extern enum bitset_type bitset_type_get (bitset);
613f5e1a	127
6aa452a6	128	/* Return bitset type name. */
7d7d6663	129	extern const char *bitset_type_name_get (bitset);
6aa452a6	130
7086e707 AD	131
7086e707 AD	132	/* Set bit BITNO in bitset BSET. */
04af9e52 PE	133	static inline void
04af9e52 PE	134	bitset_set (bitset bset, bitset_bindex bitno)
7086e707	135	{
dbba6a3b PE	136	bitset_windex windex = bitno / BITSET_WORD_BITS;
dbba6a3b PE	137	bitset_windex offset = windex - bset->b.cindex;
04af9e52	138
ef017502	139	if (offset < bset->b.csize)
e601ff27	140	bset->b.cdata[offset] \|= ((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
7086e707	141	else
ef017502	142	BITSET_SET_ (bset, bitno);
7086e707 AD	143	}
	144
	145
	146	/* Reset bit BITNO in bitset BSET. */
04af9e52 PE	147	static inline void
04af9e52 PE	148	bitset_reset (bitset bset, bitset_bindex bitno)
7086e707	149	{
dbba6a3b PE	150	bitset_windex windex = bitno / BITSET_WORD_BITS;
dbba6a3b PE	151	bitset_windex offset = windex - bset->b.cindex;
04af9e52	152
ef017502	153	if (offset < bset->b.csize)
e601ff27	154	bset->b.cdata[offset] &= ~((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
7086e707	155	else
ef017502	156	BITSET_RESET_ (bset, bitno);
7086e707 AD	157	}
	158
	159
	160	/* Test bit BITNO in bitset BSET. */
d0829076	161	static inline bool
04af9e52	162	bitset_test (bitset bset, bitset_bindex bitno)
7086e707	163	{
dbba6a3b PE	164	bitset_windex windex = bitno / BITSET_WORD_BITS;
dbba6a3b PE	165	bitset_windex offset = windex - bset->b.cindex;
04af9e52	166
ef017502 AD	167	if (offset < bset->b.csize)
ef017502 AD	168	return (bset->b.cdata[offset] >> (bitno % BITSET_WORD_BITS)) & 1;
7086e707	169	else
ef017502	170	return BITSET_TEST_ (bset, bitno);
7086e707	171	}
7086e707	172
7086e707	173
345cea78	174	/* Toggle bit BITNO in bitset BSET and return non-zero if now set. */
6aa452a6	175	#define bitset_toggle(bset, bitno) BITSET_TOGGLE_ (bset, bitno)
345cea78	176
6aa452a6 AD	177	/* Return size in bits of bitset SRC. */
	178	#define bitset_size(SRC) BITSET_SIZE_ (SRC)
	179
144c1e76	180	/* Change size of bitset. */
7d7d6663	181	extern void bitset_resize (bitset, bitset_bindex);
144c1e76	182
6aa452a6 AD	183	/* Return number of bits set in bitset SRC. */
	184	#define bitset_count(SRC) BITSET_COUNT_ (SRC)
	185
	186
	187	/* Return SRC == 0. */
	188	#define bitset_empty_p(SRC) BITSET_EMPTY_P_ (SRC)
7086e707 AD	189
7086e707 AD	190	/* DST = ~0. */
6aa452a6	191	#define bitset_ones(DST) BITSET_ONES_ (DST)
7086e707	192
6aa452a6 AD	193	/* DST = 0. */
6aa452a6 AD	194	#define bitset_zero(DST) BITSET_ZERO_ (DST)
7086e707	195
7086e707	196
6aa452a6 AD	197
	198	/* DST = SRC. */
	199	#define bitset_copy(DST, SRC) BITSET_COPY_ (DST, SRC)
7086e707	200
ef017502	201	/* Return DST & SRC == 0. */
6aa452a6	202	#define bitset_disjoint_p(DST, SRC) BITSET_DISJOINT_P_ (DST, SRC)
ef017502	203
6aa452a6 AD	204	/* Return DST == SRC. */
6aa452a6 AD	205	#define bitset_equal_p(DST, SRC) BITSET_EQUAL_P_ (DST, SRC)
7086e707 AD	206
7086e707 AD	207	/* DST = ~SRC. */
6aa452a6 AD	208	#define bitset_not(DST, SRC) BITSET_NOT_ (DST, SRC)
	209
	210	/* Return DST == DST \| SRC. */
	211	#define bitset_subset_p(DST, SRC) BITSET_SUBSET_P_ (DST, SRC)
7086e707	212
6aa452a6 AD	213
	214
	215	/* DST = SRC1 & SRC2. */
	216	#define bitset_and(DST, SRC1, SRC2) BITSET_AND_ (DST, SRC1, SRC2)
7086e707 AD	217
7086e707 AD	218	/* DST = SRC1 & SRC2. Return non-zero if DST != SRC1 & SRC2. */
6aa452a6	219	#define bitset_and_cmp(DST, SRC1, SRC2) BITSET_AND_CMP_ (DST, SRC1, SRC2)
7086e707	220
6aa452a6 AD	221	/* DST = SRC1 & ~SRC2. */
6aa452a6 AD	222	#define bitset_andn(DST, SRC1, SRC2) BITSET_ANDN_ (DST, SRC1, SRC2)
7086e707 AD	223
7086e707 AD	224	/* DST = SRC1 & ~SRC2. Return non-zero if DST != SRC1 & ~SRC2. */
6aa452a6	225	#define bitset_andn_cmp(DST, SRC1, SRC2) BITSET_ANDN_CMP_ (DST, SRC1, SRC2)
7086e707	226
6aa452a6 AD	227	/* DST = SRC1 \| SRC2. */
	228	#define bitset_or(DST, SRC1, SRC2) BITSET_OR_ (DST, SRC1, SRC2)
	229
	230	/* DST = SRC1 \| SRC2. Return non-zero if DST != SRC1 \| SRC2. */
	231	#define bitset_or_cmp(DST, SRC1, SRC2) BITSET_OR_CMP_ (DST, SRC1, SRC2)
	232
	233	/* DST = SRC1 ^ SRC2. */
	234	#define bitset_xor(DST, SRC1, SRC2) BITSET_XOR_ (DST, SRC1, SRC2)
	235
	236	/* DST = SRC1 ^ SRC2. Return non-zero if DST != SRC1 ^ SRC2. */
	237	#define bitset_xor_cmp(DST, SRC1, SRC2) BITSET_XOR_CMP_ (DST, SRC1, SRC2)
	238
	239
	240
	241	/* DST = (SRC1 & SRC2) \| SRC3. */
	242	#define bitset_and_or(DST, SRC1, SRC2, SRC3) \
	243	BITSET_AND_OR_ (DST, SRC1, SRC2, SRC3)
7086e707 AD	244
	245	/* DST = (SRC1 & SRC2) \| SRC3. Return non-zero if
	246	DST != (SRC1 & SRC2) \| SRC3. */
6aa452a6 AD	247	#define bitset_and_or_cmp(DST, SRC1, SRC2, SRC3) \
	248	BITSET_AND_OR_CMP_ (DST, SRC1, SRC2, SRC3)
	249
	250	/* DST = (SRC1 & ~SRC2) \| SRC3. */
	251	#define bitset_andn_or(DST, SRC1, SRC2, SRC3) \
	252	BITSET_ANDN_OR_ (DST, SRC1, SRC2, SRC3)
7086e707 AD	253
	254	/* DST = (SRC1 & ~SRC2) \| SRC3. Return non-zero if
	255	DST != (SRC1 & ~SRC2) \| SRC3. */
6aa452a6 AD	256	#define bitset_andn_or_cmp(DST, SRC1, SRC2, SRC3) \
6aa452a6 AD	257	BITSET_ANDN_OR_CMP_ (DST, SRC1, SRC2, SRC3)
7086e707	258
6aa452a6 AD	259	/* DST = (SRC1 \| SRC2) & SRC3. */
	260	#define bitset_or_and(DST, SRC1, SRC2, SRC3)\
	261	BITSET_OR_AND_ (DST, SRC1, SRC2, SRC3)
7086e707	262
6aa452a6 AD	263	/* DST = (SRC1 \| SRC2) & SRC3. Return non-zero if
	264	DST != (SRC1 \| SRC2) & SRC3. */
	265	#define bitset_or_and_cmp(DST, SRC1, SRC2, SRC3)\
	266	BITSET_OR_AND_CMP_ (DST, SRC1, SRC2, SRC3)
345cea78	267
04af9e52	268	/* Find list of up to NUM bits set in BSET starting from and including
7086e707 AD	269	NEXT. Return with actual number of bits found and with NEXT
7086e707 AD	270	indicating where search stopped. */
7086e707	271	#define bitset_list(BSET, LIST, NUM, NEXT) \
04af9e52	272	BITSET_LIST_ (BSET, LIST, NUM, NEXT)
7086e707 AD	273
	274	/* Find reverse list of up to NUM bits set in BSET starting from and
	275	including NEXT. Return with actual number of bits found and with
	276	NEXT indicating where search stopped. /
6aa452a6	277	#define bitset_list_reverse(BSET, LIST, NUM, NEXT) \
04af9e52	278	BITSET_LIST_REVERSE_ (BSET, LIST, NUM, NEXT)
6aa452a6	279
144c1e76	280	/* Return true if both bitsets are of the same type and size. */
fa8db4ba	281	extern bool bitset_compatible_p (bitset bset1, bitset bset2);
7086e707	282
144c1e76	283	/* Find next set bit from the given bit index. */
7d7d6663	284	extern bitset_bindex bitset_next (bitset, bitset_bindex);
47c8386f	285
144c1e76	286	/* Find previous set bit from the given bit index. */
7d7d6663	287	extern bitset_bindex bitset_prev (bitset, bitset_bindex);
47c8386f	288
7086e707	289	/* Find first set bit. */
7d7d6663	290	extern bitset_bindex bitset_first (bitset);
7086e707 AD	291
7086e707 AD	292	/* Find last set bit. */
7d7d6663	293	extern bitset_bindex bitset_last (bitset);
7086e707	294
47c8386f	295	/* Return nonzero if this is the only set bit. */
7d7d6663	296	extern bool bitset_only_set_p (bitset, bitset_bindex);
47c8386f	297
7086e707	298	/* Dump bitset. */
7d7d6663	299	extern void bitset_dump (FILE *, bitset);
7086e707	300
144c1e76	301	/* Loop over all elements of BSET, starting with MIN, setting INDEX
6aa452a6 AD	302	to the index of each set bit. For example, the following will print
	303	the bits set in a bitset:
	304
fa8db4ba	305	bitset_bindex i;
6aa452a6 AD	306	bitset_iterator iter;
6aa452a6 AD	307
fa8db4ba	308	BITSET_FOR_EACH (iter, src, i, 0)
6aa452a6	309	{
fa8db4ba	310	printf ("%lu ", (unsigned long int) i);
6aa452a6 AD	311	};
6aa452a6 AD	312	*/
144c1e76	313	#define BITSET_FOR_EACH(ITER, BSET, INDEX, MIN) \
613f5e1a	314	for (ITER.next = (MIN), ITER.num = BITSET_LIST_SIZE; \
04098407 PE	315	(ITER.num == BITSET_LIST_SIZE) \
04098407 PE	316	&& (ITER.num = bitset_list (BSET, ITER.list, \
04af9e52	317	BITSET_LIST_SIZE, &ITER.next));) \
2175bfbd	318	for (ITER.i = 0; \
144c1e76	319	ITER.i < ITER.num && ((INDEX) = ITER.list[ITER.i], 1); \
2175bfbd	320	ITER.i++)
7086e707 AD	321
	322
	323	/* Loop over all elements of BSET, in reverse order starting with
fa8db4ba	324	MIN, setting INDEX to the index of each set bit. For example, the
6aa452a6 AD	325	following will print the bits set in a bitset in reverse order:
6aa452a6 AD	326
fa8db4ba	327	bitset_bindex i;
6aa452a6 AD	328	bitset_iterator iter;
6aa452a6 AD	329
fa8db4ba	330	BITSET_FOR_EACH_REVERSE (iter, src, i, 0)
6aa452a6	331	{
fa8db4ba	332	printf ("%lu ", (unsigned long int) i);
6aa452a6 AD	333	};
6aa452a6 AD	334	*/
144c1e76	335	#define BITSET_FOR_EACH_REVERSE(ITER, BSET, INDEX, MIN) \
613f5e1a	336	for (ITER.next = (MIN), ITER.num = BITSET_LIST_SIZE; \
04098407	337	(ITER.num == BITSET_LIST_SIZE) \
613f5e1a	338	&& (ITER.num = bitset_list_reverse (BSET, ITER.list, \
144c1e76	339	BITSET_LIST_SIZE, &ITER.next));) \
2175bfbd	340	for (ITER.i = 0; \
144c1e76	341	ITER.i < ITER.num && ((INDEX) = ITER.list[ITER.i], 1); \
2175bfbd	342	ITER.i++)
7086e707 AD	343
7086e707 AD	344
ef017502	345	/* Define set operations in terms of logical operations. */
7086e707	346
04af9e52 PE	347	#define bitset_diff(DST, SRC1, SRC2) bitset_andn (DST, SRC1, SRC2)
04af9e52 PE	348	#define bitset_diff_cmp(DST, SRC1, SRC2) bitset_andn_cmp (DST, SRC1, SRC2)
7086e707	349
04af9e52 PE	350	#define bitset_intersection(DST, SRC1, SRC2) bitset_and (DST, SRC1, SRC2)
04af9e52 PE	351	#define bitset_intersection_cmp(DST, SRC1, SRC2) bitset_and_cmp (DST, SRC1, SRC2)
7086e707	352
04af9e52 PE	353	#define bitset_union(DST, SRC1, SRC2) bitset_or (DST, SRC1, SRC2)
04af9e52 PE	354	#define bitset_union_cmp(DST, SRC1, SRC2) bitset_or_cmp (DST, SRC1, SRC2)
7086e707	355
6aa452a6	356	/* Symmetrical difference. */
04af9e52 PE	357	#define bitset_symdiff(DST, SRC1, SRC2) bitset_xor (DST, SRC1, SRC2)
04af9e52 PE	358	#define bitset_symdiff_cmp(DST, SRC1, SRC2) bitset_xor_cmp (DST, SRC1, SRC2)
6aa452a6 AD	359
6aa452a6 AD	360	/* Union of difference. */
7086e707	361	#define bitset_diff_union(DST, SRC1, SRC2, SRC3) \
04af9e52	362	bitset_andn_or (DST, SRC1, SRC2, SRC3)
6aa452a6	363	#define bitset_diff_union_cmp(DST, SRC1, SRC2, SRC3) \
04af9e52	364	bitset_andn_or_cmp (DST, SRC1, SRC2, SRC3)
6aa452a6	365
ef017502	366
7086e707	367	/* Release any memory tied up with bitsets. */
7d7d6663	368	extern void bitset_release_memory (void);
7086e707	369
613f5e1a	370	/* Enable bitset stats gathering. */
7d7d6663	371	extern void bitset_stats_enable (void);
613f5e1a AD	372
613f5e1a AD	373	/* Disable bitset stats gathering. */
7d7d6663	374	extern void bitset_stats_disable (void);
613f5e1a AD	375
613f5e1a AD	376	/* Read bitset stats file of accummulated stats. */
48b16bbc	377	void bitset_stats_read (const char *file_name);
613f5e1a AD	378
613f5e1a AD	379	/* Write bitset stats file of accummulated stats. */
48b16bbc	380	void bitset_stats_write (const char *file_name);
7086e707 AD	381
7086e707 AD	382	/* Dump bitset stats. */
7d7d6663	383	extern void bitset_stats_dump (FILE *);
7086e707 AD	384
7086e707 AD	385	/* Function to debug bitset from debugger. */
7d7d6663	386	extern void debug_bitset (bitset);
7086e707 AD	387
7086e707 AD	388	/* Function to debug bitset stats from debugger. */
7d7d6663	389	extern void debug_bitset_stats (void);
7086e707	390
7086e707	391	#endif /* _BITSET_H */