ROOT
v6-30
Reference Guide
Loading...
Searching...
No Matches
priorityq.h
Go to the documentation of this file.
1
/*
2
* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3
* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4
*
5
* Permission is hereby granted, free of charge, to any person obtaining a
6
* copy of this software and associated documentation files (the "Software"),
7
* to deal in the Software without restriction, including without limitation
8
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
9
* and/or sell copies of the Software, and to permit persons to whom the
10
* Software is furnished to do so, subject to the following conditions:
11
*
12
* The above copyright notice including the dates of first publication and
13
* either this permission notice or a reference to
14
* http://oss.sgi.com/projects/FreeB/
15
* shall be included in all copies or substantial portions of the Software.
16
*
17
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20
* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23
* SOFTWARE.
24
*
25
* Except as contained in this notice, the name of Silicon Graphics, Inc.
26
* shall not be used in advertising or otherwise to promote the sale, use or
27
* other dealings in this Software without prior written authorization from
28
* Silicon Graphics, Inc.
29
*/
30
/*
31
** Author: Eric Veach, July 1994.
32
**
33
*/
34
35
#ifndef __priorityq_sort_h_
36
#define __priorityq_sort_h_
37
38
#include "
priorityq-heap.h
"
39
40
#undef PQkey
41
#undef PQhandle
42
#undef PriorityQ
43
#undef pqNewPriorityQ
44
#undef pqDeletePriorityQ
45
#undef pqInit
46
#undef pqInsert
47
#undef pqMinimum
48
#undef pqExtractMin
49
#undef pqDelete
50
#undef pqIsEmpty
51
52
/* Use #define's so that another heap implementation can use this one */
53
54
#define PQkey PQSortKey
55
#define PQhandle PQSortHandle
56
#define PriorityQ PriorityQSort
57
58
#define pqNewPriorityQ(leq) __gl_pqSortNewPriorityQ(leq)
59
#define pqDeletePriorityQ(pq) __gl_pqSortDeletePriorityQ(pq)
60
61
/* The basic operations are insertion of a new key (pqInsert),
62
* and examination/extraction of a key whose value is minimum
63
* (pqMinimum/pqExtractMin). Deletion is also allowed (pqDelete);
64
* for this purpose pqInsert returns a "handle" which is supplied
65
* as the argument.
66
*
67
* An initial heap may be created efficiently by calling pqInsert
68
* repeatedly, then calling pqInit. In any case pqInit must be called
69
* before any operations other than pqInsert are used.
70
*
71
* If the heap is empty, pqMinimum/pqExtractMin will return a NULL key.
72
* This may also be tested with pqIsEmpty.
73
*/
74
#define pqInit(pq) __gl_pqSortInit(pq)
75
#define pqInsert(pq,key) __gl_pqSortInsert(pq,key)
76
#define pqMinimum(pq) __gl_pqSortMinimum(pq)
77
#define pqExtractMin(pq) __gl_pqSortExtractMin(pq)
78
#define pqDelete(pq,handle) __gl_pqSortDelete(pq,handle)
79
#define pqIsEmpty(pq) __gl_pqSortIsEmpty(pq)
80
81
82
/* Since we support deletion the data structure is a little more
83
* complicated than an ordinary heap. "nodes" is the heap itself;
84
* active nodes are stored in the range 1..pq->size. When the
85
* heap exceeds its allocated size (pq->max), its size doubles.
86
* The children of node i are nodes 2i and 2i+1.
87
*
88
* Each node stores an index into an array "handles". Each handle
89
* stores a key, plus a pointer back to the node which currently
90
* represents that key (ie. nodes[handles[i].node].handle == i).
91
*/
92
93
typedef
PQHeapKey
PQkey
;
94
typedef
PQHeapHandle
PQhandle
;
95
typedef
struct
PriorityQ
PriorityQ
;
96
97
struct
PriorityQ
{
98
PriorityQHeap
*heap;
99
PQkey
*keys;
100
PQkey
**order;
101
PQhandle
size
, max;
102
int
initialized;
103
int
(*leq)(
PQkey
key1,
PQkey
key2);
104
};
105
106
PriorityQ
*
pqNewPriorityQ
(
int
(*leq)(
PQkey
key1,
PQkey
key2) );
107
void
pqDeletePriorityQ
(
PriorityQ
*pq );
108
109
int
pqInit
(
PriorityQ
*pq );
110
PQhandle
pqInsert
(
PriorityQ
*pq,
PQkey
key );
111
PQkey
pqExtractMin
(
PriorityQ
*pq );
112
void
pqDelete
(
PriorityQ
*pq,
PQhandle
handle );
113
114
PQkey
pqMinimum
(
PriorityQ
*pq );
115
int
pqIsEmpty
(
PriorityQ
*pq );
116
117
#endif
size
size_t size(const MatrixT &matrix)
retrieve the size of a square matrix
int
priorityq-heap.h
PQHeapKey
void * PQHeapKey
Definition
priorityq-heap.h:79
PQhandle
#define PQhandle
Definition
priorityq-heap.h:41
PQHeapHandle
long PQHeapHandle
Definition
priorityq-heap.h:80
PQkey
#define PQkey
Definition
priorityq-heap.h:40
pqIsEmpty
#define pqIsEmpty(pq)
Definition
priorityq.h:79
pqNewPriorityQ
#define pqNewPriorityQ(leq)
Definition
priorityq.h:58
pqDeletePriorityQ
#define pqDeletePriorityQ(pq)
Definition
priorityq.h:59
PriorityQ
#define PriorityQ
Definition
priorityq.h:56
pqInit
#define pqInit(pq)
Definition
priorityq.h:74
pqDelete
#define pqDelete(pq, handle)
Definition
priorityq.h:78
pqExtractMin
#define pqExtractMin(pq)
Definition
priorityq.h:77
PQhandle
#define PQhandle
Definition
priorityq.h:55
pqMinimum
#define pqMinimum(pq)
Definition
priorityq.h:76
PQkey
#define PQkey
Definition
priorityq.h:54
pqInsert
#define pqInsert(pq, key)
Definition
priorityq.h:75
PriorityQHeap
Definition
priorityq-heap.h:86
graf3d
eve7
glu
priorityq.h
ROOT v6-30 - Reference Guide Generated on Fri Aug 9 2024 10:44:37 (GVA Time) using Doxygen 1.9.8