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Contents of /navit/navit/fib-1.1/fibpriv.h

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1 /*-
2 * Copyright 1997, 1999-2003 John-Mark Gurney.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $Id: fibpriv.h,v 1.1 2005-12-02 10:41:56 martin-s Exp $
27 *
28 */
29
30 #ifndef _FIBPRIV_H_
31 #define _FIBPRIV_H_
32
33 struct fibheap_el;
34
35 /*
36 * global heap operations
37 */
38 struct fibheap {
39 int (*fh_cmp_fnct)(void *, void *);
40 int fh_n;
41 int fh_Dl;
42 struct fibheap_el **fh_cons;
43 struct fibheap_el *fh_min;
44 struct fibheap_el *fh_root;
45 void *fh_neginf;
46 int fh_keys : 1;
47 #ifdef FH_STATS
48 int fh_maxn;
49 int fh_ninserts;
50 int fh_nextracts;
51 #endif
52 };
53
54 static void fh_initheap(struct fibheap *);
55 static void fh_insertrootlist(struct fibheap *, struct fibheap_el *);
56 static void fh_removerootlist(struct fibheap *, struct fibheap_el *);
57 static void fh_consolidate(struct fibheap *);
58 static void fh_heaplink(struct fibheap *h, struct fibheap_el *y,
59 struct fibheap_el *x);
60 static void fh_cut(struct fibheap *, struct fibheap_el *, struct fibheap_el *);
61 static void fh_cascading_cut(struct fibheap *, struct fibheap_el *);
62 static struct fibheap_el *fh_extractminel(struct fibheap *);
63 static void fh_checkcons(struct fibheap *h);
64 static void fh_destroyheap(struct fibheap *h);
65 static int fh_compare(struct fibheap *h, struct fibheap_el *a,
66 struct fibheap_el *b);
67 static int fh_comparedata(struct fibheap *h, int key, void *data,
68 struct fibheap_el *b);
69 static void fh_insertel(struct fibheap *h, struct fibheap_el *x);
70 static void fh_deleteel(struct fibheap *h, struct fibheap_el *x);
71
72 /*
73 * specific node operations
74 */
75 struct fibheap_el {
76 int fhe_degree;
77 int fhe_mark;
78 struct fibheap_el *fhe_p;
79 struct fibheap_el *fhe_child;
80 struct fibheap_el *fhe_left;
81 struct fibheap_el *fhe_right;
82 int fhe_key;
83 void *fhe_data;
84 };
85
86 static struct fibheap_el *fhe_newelem(void);
87 static void fhe_initelem(struct fibheap_el *);
88 static void fhe_insertafter(struct fibheap_el *a, struct fibheap_el *b);
89 static void fhe_insertbefore(struct fibheap_el *a, struct fibheap_el *b);
90 static struct fibheap_el *fhe_remove(struct fibheap_el *a);
91 #define fhe_destroy(x) free((x))
92
93 /*
94 * general functions
95 */
96 static int ceillog2(unsigned int a);
97
98 #endif /* _FIBPRIV_H_ */

   
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