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7086e7071e
* lib/bitsetv.h, lib/ebitset.c, lib/ebitset.h, lib/lbitset.c, * lib/lbitset.h, lib/sbitset.c, lib/sbitset.h: New. * src/closure.c (fderives): Be an array of bitsets.
63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/* Functions to support lbitsets.
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Copyright (C) 2002 Free Software Foundation, Inc.
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Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#ifndef _LBITSET_H
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#define _LBITSET_H
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#include "bitset-int.h"
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/* Number of words to use for each element. The larger the value the
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greater the size of the cache and the shorter the time to find a given bit
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but the more memory wasted for sparse bitsets and the longer the time
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to search for set bits. */
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#ifndef LBITSET_ELT_WORDS
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#define LBITSET_ELT_WORDS 2
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#endif
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typedef bitset_word lbitset_word;
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#define LBITSET_WORD_BITS BITSET_WORD_BITS
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/* Number of bits stored in each element. */
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#define LBITSET_ELT_BITS \
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((unsigned) (LBITSET_ELT_WORDS * LBITSET_WORD_BITS))
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/* Lbitset element. We use an array of bits for each element.
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These are linked together in a doubly-linked list. */
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typedef struct lbitset_elt_struct
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{
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struct lbitset_elt_struct *next; /* Next element. */
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struct lbitset_elt_struct *prev; /* Previous element. */
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bitset_windex index; /* bitno / BITSET_WORD_BITS. */
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bitset_word words[LBITSET_ELT_WORDS]; /* Bits that are set. */
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} lbitset_elt;
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/* Head of lbitset linked list. */
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typedef struct lbitset_struct
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{
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lbitset_elt *head; /* First element in linked list. */
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lbitset_elt *tail; /* Last element in linked list. */
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} *lbitset;
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extern int lbitset_bytes PARAMS ((bitset_bindex));
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extern void lbitset_release_memory PARAMS ((void));
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#endif
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