[bison.git] / lib / bitset.h

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

#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>

/* 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 *filename);

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

/* 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.
7d7d6663	2	Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
7086e707 AD	3	Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
	4
	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 2 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, write to the Free Software
	17	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	18
	19	#ifndef _BITSET_H
04af9e52	20	#define _BITSET_H
7086e707	21
ef017502 AD	22	/* This file is the public interface to the bitset abstract data type.
ef017502 AD	23	Only use the functions and macros defined in this file. */
7086e707	24
ef017502	25	#include "bbitset.h"
7086e707 AD	26	#include "obstack.h"
7086e707 AD	27	#include <stdio.h>
7086e707	28
ef017502	29	/* Attributes used to select a bitset implementation. */
7086e707 AD	30	enum bitset_attr {BITSET_FIXED = 1, /* Bitset size fixed. */
	31	BITSET_VARIABLE = 2, /* Bitset size variable. */
	32	BITSET_DENSE = 4, /* Bitset dense. */
	33	BITSET_SPARSE = 8, /* Bitset sparse. */
	34	BITSET_FRUGAL = 16, /* Prefer most compact. */
6aa452a6	35	BITSET_GREEDY = 32}; /* Prefer fastest at memory expense. */
7086e707 AD	36
	37	typedef unsigned int bitset_attrs;
	38
47c8386f PE	39	/* The contents of the union should be considered to be private.
	40	While I would like to make this union opaque, it needs to be
	41	visible for the inline bit set/test functions, and for delegation
	42	to the proper implementation. */
	43	union bitset_union
7086e707	44	{
47c8386f PE	45	/* This must be the first member of every other structure that is a
47c8386f PE	46	member of this union. */
144c1e76	47	struct bbitset_struct b; /* Base bitset data. */
47c8386f PE	48
	49	struct abitset_struct
	50	{
	51	struct bbitset_struct b;
47c8386f PE	52	bitset_word words[1]; /* The array of bits. */
	53	} a;
	54
	55	struct ebitset_struct
	56	{
	57	struct bbitset_struct b;
	58	bitset_windex size; /* Number of elements. */
	59	struct ebitset_elt_struct *elts; / Expanding array of ptrs to elts. */
	60	} e;
	61
	62	struct lbitset_struct
	63	{
	64	struct bbitset_struct b;
	65	struct lbitset_elt_struct head; / First element in linked list. */
	66	struct lbitset_elt_struct tail; / Last element in linked list. */
	67	} l;
	68
	69	struct bitset_stats_struct
	70	{
	71	struct bbitset_struct b;
	72	bitset bset;
	73	} s;
144c1e76 PE	74
	75	struct vbitset_struct
	76	{
	77	struct bbitset_struct b;
	78	bitset_windex size; /* Allocated size of array. */
	79	} v;
	80
7086e707 AD	81	};
7086e707 AD	82
613f5e1a AD	83
	84	/* The contents of this structure should be considered private.
	85	It is used for iterating over set bits. */
	86	typedef struct
	87	{
	88	bitset_bindex list[BITSET_LIST_SIZE];
	89	bitset_bindex next;
808a5918 PE	90	bitset_bindex num;
808a5918 PE	91	bitset_bindex i;
613f5e1a AD	92	} bitset_iterator;
	93
	94
7086e707	95	/* Return bytes required for bitset of desired type and size. */
7d7d6663	96	extern size_t bitset_bytes (enum bitset_type, bitset_bindex);
7086e707 AD	97
7086e707 AD	98	/* Initialise a bitset with desired type and size. */
7d7d6663	99	extern bitset bitset_init (bitset, bitset_bindex, enum bitset_type);
7086e707	100
ef017502 AD	101	/* Select an implementation type based on the desired bitset size
ef017502 AD	102	and attributes. */
7d7d6663	103	extern enum bitset_type bitset_type_choose (bitset_bindex, bitset_attrs);
7086e707	104
ef017502	105	/* Create a bitset of desired type and size. The bitset is zeroed. */
7d7d6663	106	extern bitset bitset_alloc (bitset_bindex, enum bitset_type);
7086e707 AD	107
7086e707 AD	108	/* Free bitset. */
7d7d6663	109	extern void bitset_free (bitset);
7086e707	110
ef017502 AD	111	/* Create a bitset of desired type and size using an obstack. The
ef017502 AD	112	bitset is zeroed. */
7d7d6663 PE	113	extern bitset bitset_obstack_alloc (struct obstack *bobstack,
7d7d6663 PE	114	bitset_bindex, enum bitset_type);
7086e707 AD	115
7086e707 AD	116	/* Free bitset allocated on obstack. */
7d7d6663	117	extern void bitset_obstack_free (bitset);
7086e707	118
ef017502	119	/* Create a bitset of desired size and attributes. The bitset is zeroed. */
7d7d6663	120	extern bitset bitset_create (bitset_bindex, bitset_attrs);
7086e707	121
613f5e1a	122	/* Return bitset type. */
7d7d6663	123	extern enum bitset_type bitset_type_get (bitset);
613f5e1a	124
6aa452a6	125	/* Return bitset type name. */
7d7d6663	126	extern const char *bitset_type_name_get (bitset);
6aa452a6	127
7086e707 AD	128
7086e707 AD	129	/* Set bit BITNO in bitset BSET. */
04af9e52 PE	130	static inline void
04af9e52 PE	131	bitset_set (bitset bset, bitset_bindex bitno)
7086e707	132	{
dbba6a3b PE	133	bitset_windex windex = bitno / BITSET_WORD_BITS;
dbba6a3b PE	134	bitset_windex offset = windex - bset->b.cindex;
04af9e52	135
ef017502	136	if (offset < bset->b.csize)
e601ff27	137	bset->b.cdata[offset] \|= ((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
7086e707	138	else
ef017502	139	BITSET_SET_ (bset, bitno);
7086e707 AD	140	}
	141
	142
	143	/* Reset bit BITNO in bitset BSET. */
04af9e52 PE	144	static inline void
04af9e52 PE	145	bitset_reset (bitset bset, bitset_bindex bitno)
7086e707	146	{
dbba6a3b PE	147	bitset_windex windex = bitno / BITSET_WORD_BITS;
dbba6a3b PE	148	bitset_windex offset = windex - bset->b.cindex;
04af9e52	149
ef017502	150	if (offset < bset->b.csize)
e601ff27	151	bset->b.cdata[offset] &= ~((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
7086e707	152	else
ef017502	153	BITSET_RESET_ (bset, bitno);
7086e707 AD	154	}
	155
	156
	157	/* Test bit BITNO in bitset BSET. */
d0829076	158	static inline bool
04af9e52	159	bitset_test (bitset bset, bitset_bindex bitno)
7086e707	160	{
dbba6a3b PE	161	bitset_windex windex = bitno / BITSET_WORD_BITS;
dbba6a3b PE	162	bitset_windex offset = windex - bset->b.cindex;
04af9e52	163
ef017502 AD	164	if (offset < bset->b.csize)
ef017502 AD	165	return (bset->b.cdata[offset] >> (bitno % BITSET_WORD_BITS)) & 1;
7086e707	166	else
ef017502	167	return BITSET_TEST_ (bset, bitno);
7086e707	168	}
7086e707	169
7086e707	170
345cea78	171	/* Toggle bit BITNO in bitset BSET and return non-zero if now set. */
6aa452a6	172	#define bitset_toggle(bset, bitno) BITSET_TOGGLE_ (bset, bitno)
345cea78	173
6aa452a6 AD	174	/* Return size in bits of bitset SRC. */
	175	#define bitset_size(SRC) BITSET_SIZE_ (SRC)
	176
144c1e76	177	/* Change size of bitset. */
7d7d6663	178	extern void bitset_resize (bitset, bitset_bindex);
144c1e76	179
6aa452a6 AD	180	/* Return number of bits set in bitset SRC. */
	181	#define bitset_count(SRC) BITSET_COUNT_ (SRC)
	182
	183
	184	/* Return SRC == 0. */
	185	#define bitset_empty_p(SRC) BITSET_EMPTY_P_ (SRC)
7086e707 AD	186
7086e707 AD	187	/* DST = ~0. */
6aa452a6	188	#define bitset_ones(DST) BITSET_ONES_ (DST)
7086e707	189
6aa452a6 AD	190	/* DST = 0. */
6aa452a6 AD	191	#define bitset_zero(DST) BITSET_ZERO_ (DST)
7086e707	192
7086e707	193
6aa452a6 AD	194
	195	/* DST = SRC. */
	196	#define bitset_copy(DST, SRC) BITSET_COPY_ (DST, SRC)
7086e707	197
ef017502	198	/* Return DST & SRC == 0. */
6aa452a6	199	#define bitset_disjoint_p(DST, SRC) BITSET_DISJOINT_P_ (DST, SRC)
ef017502	200
6aa452a6 AD	201	/* Return DST == SRC. */
6aa452a6 AD	202	#define bitset_equal_p(DST, SRC) BITSET_EQUAL_P_ (DST, SRC)
7086e707 AD	203
7086e707 AD	204	/* DST = ~SRC. */
6aa452a6 AD	205	#define bitset_not(DST, SRC) BITSET_NOT_ (DST, SRC)
	206
	207	/* Return DST == DST \| SRC. */
	208	#define bitset_subset_p(DST, SRC) BITSET_SUBSET_P_ (DST, SRC)
7086e707	209
6aa452a6 AD	210
	211
	212	/* DST = SRC1 & SRC2. */
	213	#define bitset_and(DST, SRC1, SRC2) BITSET_AND_ (DST, SRC1, SRC2)
7086e707 AD	214
7086e707 AD	215	/* DST = SRC1 & SRC2. Return non-zero if DST != SRC1 & SRC2. */
6aa452a6	216	#define bitset_and_cmp(DST, SRC1, SRC2) BITSET_AND_CMP_ (DST, SRC1, SRC2)
7086e707	217
6aa452a6 AD	218	/* DST = SRC1 & ~SRC2. */
6aa452a6 AD	219	#define bitset_andn(DST, SRC1, SRC2) BITSET_ANDN_ (DST, SRC1, SRC2)
7086e707 AD	220
7086e707 AD	221	/* DST = SRC1 & ~SRC2. Return non-zero if DST != SRC1 & ~SRC2. */
6aa452a6	222	#define bitset_andn_cmp(DST, SRC1, SRC2) BITSET_ANDN_CMP_ (DST, SRC1, SRC2)
7086e707	223
6aa452a6 AD	224	/* DST = SRC1 \| SRC2. */
	225	#define bitset_or(DST, SRC1, SRC2) BITSET_OR_ (DST, SRC1, SRC2)
	226
	227	/* DST = SRC1 \| SRC2. Return non-zero if DST != SRC1 \| SRC2. */
	228	#define bitset_or_cmp(DST, SRC1, SRC2) BITSET_OR_CMP_ (DST, SRC1, SRC2)
	229
	230	/* DST = SRC1 ^ SRC2. */
	231	#define bitset_xor(DST, SRC1, SRC2) BITSET_XOR_ (DST, SRC1, SRC2)
	232
	233	/* DST = SRC1 ^ SRC2. Return non-zero if DST != SRC1 ^ SRC2. */
	234	#define bitset_xor_cmp(DST, SRC1, SRC2) BITSET_XOR_CMP_ (DST, SRC1, SRC2)
	235
	236
	237
	238	/* DST = (SRC1 & SRC2) \| SRC3. */
	239	#define bitset_and_or(DST, SRC1, SRC2, SRC3) \
	240	BITSET_AND_OR_ (DST, SRC1, SRC2, SRC3)
7086e707 AD	241
	242	/* DST = (SRC1 & SRC2) \| SRC3. Return non-zero if
	243	DST != (SRC1 & SRC2) \| SRC3. */
6aa452a6 AD	244	#define bitset_and_or_cmp(DST, SRC1, SRC2, SRC3) \
	245	BITSET_AND_OR_CMP_ (DST, SRC1, SRC2, SRC3)
	246
	247	/* DST = (SRC1 & ~SRC2) \| SRC3. */
	248	#define bitset_andn_or(DST, SRC1, SRC2, SRC3) \
	249	BITSET_ANDN_OR_ (DST, SRC1, SRC2, SRC3)
7086e707 AD	250
	251	/* DST = (SRC1 & ~SRC2) \| SRC3. Return non-zero if
	252	DST != (SRC1 & ~SRC2) \| SRC3. */
6aa452a6 AD	253	#define bitset_andn_or_cmp(DST, SRC1, SRC2, SRC3) \
6aa452a6 AD	254	BITSET_ANDN_OR_CMP_ (DST, SRC1, SRC2, SRC3)
7086e707	255
6aa452a6 AD	256	/* DST = (SRC1 \| SRC2) & SRC3. */
	257	#define bitset_or_and(DST, SRC1, SRC2, SRC3)\
	258	BITSET_OR_AND_ (DST, SRC1, SRC2, SRC3)
7086e707	259
6aa452a6 AD	260	/* DST = (SRC1 \| SRC2) & SRC3. Return non-zero if
	261	DST != (SRC1 \| SRC2) & SRC3. */
	262	#define bitset_or_and_cmp(DST, SRC1, SRC2, SRC3)\
	263	BITSET_OR_AND_CMP_ (DST, SRC1, SRC2, SRC3)
345cea78	264
04af9e52	265	/* Find list of up to NUM bits set in BSET starting from and including
7086e707 AD	266	NEXT. Return with actual number of bits found and with NEXT
7086e707 AD	267	indicating where search stopped. */
7086e707	268	#define bitset_list(BSET, LIST, NUM, NEXT) \
04af9e52	269	BITSET_LIST_ (BSET, LIST, NUM, NEXT)
7086e707 AD	270
	271	/* Find reverse list of up to NUM bits set in BSET starting from and
	272	including NEXT. Return with actual number of bits found and with
	273	NEXT indicating where search stopped. /
6aa452a6	274	#define bitset_list_reverse(BSET, LIST, NUM, NEXT) \
04af9e52	275	BITSET_LIST_REVERSE_ (BSET, LIST, NUM, NEXT)
6aa452a6	276
144c1e76	277	/* Return true if both bitsets are of the same type and size. */
fa8db4ba	278	extern bool bitset_compatible_p (bitset bset1, bitset bset2);
7086e707	279
144c1e76	280	/* Find next set bit from the given bit index. */
7d7d6663	281	extern bitset_bindex bitset_next (bitset, bitset_bindex);
47c8386f	282
144c1e76	283	/* Find previous set bit from the given bit index. */
7d7d6663	284	extern bitset_bindex bitset_prev (bitset, bitset_bindex);
47c8386f	285
7086e707	286	/* Find first set bit. */
7d7d6663	287	extern bitset_bindex bitset_first (bitset);
7086e707 AD	288
7086e707 AD	289	/* Find last set bit. */
7d7d6663	290	extern bitset_bindex bitset_last (bitset);
7086e707	291
47c8386f	292	/* Return nonzero if this is the only set bit. */
7d7d6663	293	extern bool bitset_only_set_p (bitset, bitset_bindex);
47c8386f	294
7086e707	295	/* Dump bitset. */
7d7d6663	296	extern void bitset_dump (FILE *, bitset);
7086e707	297
144c1e76	298	/* Loop over all elements of BSET, starting with MIN, setting INDEX
6aa452a6 AD	299	to the index of each set bit. For example, the following will print
	300	the bits set in a bitset:
	301
fa8db4ba	302	bitset_bindex i;
6aa452a6 AD	303	bitset_iterator iter;
6aa452a6 AD	304
fa8db4ba	305	BITSET_FOR_EACH (iter, src, i, 0)
6aa452a6	306	{
fa8db4ba	307	printf ("%lu ", (unsigned long int) i);
6aa452a6 AD	308	};
6aa452a6 AD	309	*/
144c1e76	310	#define BITSET_FOR_EACH(ITER, BSET, INDEX, MIN) \
613f5e1a AD	311	for (ITER.next = (MIN), ITER.num = BITSET_LIST_SIZE; \
	312	(ITER.num == BITSET_LIST_SIZE) \
	313	&& (ITER.num = bitset_list (BSET, ITER.list, \
04af9e52	314	BITSET_LIST_SIZE, &ITER.next));) \
2175bfbd	315	for (ITER.i = 0; \
144c1e76	316	ITER.i < ITER.num && ((INDEX) = ITER.list[ITER.i], 1); \
2175bfbd	317	ITER.i++)
7086e707 AD	318
	319
	320	/* Loop over all elements of BSET, in reverse order starting with
fa8db4ba	321	MIN, setting INDEX to the index of each set bit. For example, the
6aa452a6 AD	322	following will print the bits set in a bitset in reverse order:
6aa452a6 AD	323
fa8db4ba	324	bitset_bindex i;
6aa452a6 AD	325	bitset_iterator iter;
6aa452a6 AD	326
fa8db4ba	327	BITSET_FOR_EACH_REVERSE (iter, src, i, 0)
6aa452a6	328	{
fa8db4ba	329	printf ("%lu ", (unsigned long int) i);
6aa452a6 AD	330	};
6aa452a6 AD	331	*/
144c1e76	332	#define BITSET_FOR_EACH_REVERSE(ITER, BSET, INDEX, MIN) \
613f5e1a AD	333	for (ITER.next = (MIN), ITER.num = BITSET_LIST_SIZE; \
	334	(ITER.num == BITSET_LIST_SIZE) \
	335	&& (ITER.num = bitset_list_reverse (BSET, ITER.list, \
144c1e76	336	BITSET_LIST_SIZE, &ITER.next));) \
2175bfbd	337	for (ITER.i = 0; \
144c1e76	338	ITER.i < ITER.num && ((INDEX) = ITER.list[ITER.i], 1); \
2175bfbd	339	ITER.i++)
7086e707 AD	340
7086e707 AD	341
ef017502	342	/* Define set operations in terms of logical operations. */
7086e707	343
04af9e52 PE	344	#define bitset_diff(DST, SRC1, SRC2) bitset_andn (DST, SRC1, SRC2)
04af9e52 PE	345	#define bitset_diff_cmp(DST, SRC1, SRC2) bitset_andn_cmp (DST, SRC1, SRC2)
7086e707	346
04af9e52 PE	347	#define bitset_intersection(DST, SRC1, SRC2) bitset_and (DST, SRC1, SRC2)
04af9e52 PE	348	#define bitset_intersection_cmp(DST, SRC1, SRC2) bitset_and_cmp (DST, SRC1, SRC2)
7086e707	349
04af9e52 PE	350	#define bitset_union(DST, SRC1, SRC2) bitset_or (DST, SRC1, SRC2)
04af9e52 PE	351	#define bitset_union_cmp(DST, SRC1, SRC2) bitset_or_cmp (DST, SRC1, SRC2)
7086e707	352
6aa452a6	353	/* Symmetrical difference. */
04af9e52 PE	354	#define bitset_symdiff(DST, SRC1, SRC2) bitset_xor (DST, SRC1, SRC2)
04af9e52 PE	355	#define bitset_symdiff_cmp(DST, SRC1, SRC2) bitset_xor_cmp (DST, SRC1, SRC2)
6aa452a6 AD	356
6aa452a6 AD	357	/* Union of difference. */
7086e707	358	#define bitset_diff_union(DST, SRC1, SRC2, SRC3) \
04af9e52	359	bitset_andn_or (DST, SRC1, SRC2, SRC3)
6aa452a6	360	#define bitset_diff_union_cmp(DST, SRC1, SRC2, SRC3) \
04af9e52	361	bitset_andn_or_cmp (DST, SRC1, SRC2, SRC3)
6aa452a6	362
ef017502	363
7086e707	364	/* Release any memory tied up with bitsets. */
7d7d6663	365	extern void bitset_release_memory (void);
7086e707	366
613f5e1a	367	/* Enable bitset stats gathering. */
7d7d6663	368	extern void bitset_stats_enable (void);
613f5e1a AD	369
613f5e1a AD	370	/* Disable bitset stats gathering. */
7d7d6663	371	extern void bitset_stats_disable (void);
613f5e1a AD	372
613f5e1a AD	373	/* Read bitset stats file of accummulated stats. */
7d7d6663	374	void bitset_stats_read (const char *filename);
613f5e1a AD	375
613f5e1a AD	376	/* Write bitset stats file of accummulated stats. */
7d7d6663	377	void bitset_stats_write (const char *filename);
7086e707 AD	378
7086e707 AD	379	/* Dump bitset stats. */
7d7d6663	380	extern void bitset_stats_dump (FILE *);
7086e707 AD	381
7086e707 AD	382	/* Function to debug bitset from debugger. */
7d7d6663	383	extern void debug_bitset (bitset);
7086e707 AD	384
7086e707 AD	385	/* Function to debug bitset stats from debugger. */
7d7d6663	386	extern void debug_bitset_stats (void);
7086e707	387
7086e707	388	#endif /* _BITSET_H */
613f5e1a	389