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https://git.code.sf.net/p/quake/quakeforge
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b9599a7119
At the cost of one pointer per set, sets can now be allocated and freed more efficiently (especially since malloc might round things up).
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
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set.h
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Set manipulation.
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Copyright (C) 2012 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2012/8/4
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (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.
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See the 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:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifndef set_h
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#define set_h
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/** \defgroup qfcc_set Set handling
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\ingroup qfcc
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*/
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//@{
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typedef struct set_s {
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struct set_s *next; //< private. for ALLOC
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unsigned *map;
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unsigned size;
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unsigned defmap[8];
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} set_t;
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typedef struct set_iter_s {
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struct set_iter_s *next; //< private. for ALLOC
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const set_t *set;
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/** The result of set_first() or set_next(). set_next() will start at the
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following member.
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*/
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unsigned member;
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} set_iter_t;
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void set_del_iter (set_iter_t *set_iter);
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set_t *set_new (void);
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void set_delete (set_t *set);
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void set_add (set_t *set, unsigned x);
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void set_remove (set_t *set, unsigned x);
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set_t *set_union (set_t *dst, const set_t *src);
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set_t *set_intersection (set_t *dst, const set_t *src);
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set_t *set_difference (set_t *dst, const set_t *src);
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set_t *set_assign (set_t *dst, const set_t *src);
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set_t *set_empty (set_t *set);
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int set_is_empty (const set_t *set);
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int set_is_disjoint (const set_t *s1, const set_t *s2);
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int set_is_intersecting (const set_t *s1, const set_t *s2);
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int set_is_equivalent (const set_t *s1, const set_t *s2);
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int set_is_subset (const set_t *set, const set_t *sub);
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int set_is_member (const set_t *set, unsigned x);
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unsigned set_size (const set_t *set);
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set_iter_t *set_first (const set_t *set);
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set_iter_t *set_next (set_iter_t *set_iter);
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const char *set_as_string (const set_t *set);
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//@}
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#endif//set_h
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