Mercurial > hg > CbC > CbC_gcc
annotate include/fibheap.h @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 12 Feb 2010 23:39:51 +0900 |
| parents | a06113de4d67 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* A Fibonacci heap datatype. |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2009 |
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3 Free Software Foundation, Inc. |
| 0 | 4 Contributed by Daniel Berlin (dan@cgsoftware.com). |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by | |
| 10 the Free Software Foundation; either version 2, or (at your option) | |
| 11 any later version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but | |
| 14 WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 General Public License for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING. If not, write to | |
| 20 the Free Software Foundation, 51 Franklin Street - Fifth Floor, | |
| 21 Boston, MA 02110-1301, USA. */ | |
| 22 | |
| 23 /* Fibonacci heaps are somewhat complex, but, there's an article in | |
| 24 DDJ that explains them pretty well: | |
| 25 | |
| 26 http://www.ddj.com/articles/1997/9701/9701o/9701o.htm?topic=algoritms | |
| 27 | |
| 28 Introduction to algorithms by Corman and Rivest also goes over them. | |
| 29 | |
| 30 The original paper that introduced them is "Fibonacci heaps and their | |
| 31 uses in improved network optimization algorithms" by Tarjan and | |
| 32 Fredman (JACM 34(3), July 1987). | |
| 33 | |
| 34 Amortized and real worst case time for operations: | |
| 35 | |
| 36 ExtractMin: O(lg n) amortized. O(n) worst case. | |
| 37 DecreaseKey: O(1) amortized. O(lg n) worst case. | |
| 38 Insert: O(2) amortized. O(1) actual. | |
| 39 Union: O(1) amortized. O(1) actual. */ | |
| 40 | |
| 41 #ifndef _FIBHEAP_H_ | |
| 42 #define _FIBHEAP_H_ | |
| 43 | |
| 44 #include "ansidecl.h" | |
| 45 | |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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46 #ifdef __cplusplus |
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47 extern "C" { |
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77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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48 #endif |
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77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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49 |
| 0 | 50 typedef long fibheapkey_t; |
| 51 | |
| 52 typedef struct fibheap | |
| 53 { | |
| 54 size_t nodes; | |
| 55 struct fibnode *min; | |
| 56 struct fibnode *root; | |
| 57 } *fibheap_t; | |
| 58 | |
| 59 typedef struct fibnode | |
| 60 { | |
| 61 struct fibnode *parent; | |
| 62 struct fibnode *child; | |
| 63 struct fibnode *left; | |
| 64 struct fibnode *right; | |
| 65 fibheapkey_t key; | |
| 66 void *data; | |
| 67 #if defined (__GNUC__) && (!defined (SIZEOF_INT) || SIZEOF_INT < 4) | |
| 68 __extension__ unsigned long int degree : 31; | |
| 69 __extension__ unsigned long int mark : 1; | |
| 70 #else | |
| 71 unsigned int degree : 31; | |
| 72 unsigned int mark : 1; | |
| 73 #endif | |
| 74 } *fibnode_t; | |
| 75 | |
| 76 extern fibheap_t fibheap_new (void); | |
| 77 extern fibnode_t fibheap_insert (fibheap_t, fibheapkey_t, void *); | |
| 78 extern int fibheap_empty (fibheap_t); | |
| 79 extern fibheapkey_t fibheap_min_key (fibheap_t); | |
| 80 extern fibheapkey_t fibheap_replace_key (fibheap_t, fibnode_t, | |
| 81 fibheapkey_t); | |
| 82 extern void *fibheap_replace_key_data (fibheap_t, fibnode_t, | |
| 83 fibheapkey_t, void *); | |
| 84 extern void *fibheap_extract_min (fibheap_t); | |
| 85 extern void *fibheap_min (fibheap_t); | |
| 86 extern void *fibheap_replace_data (fibheap_t, fibnode_t, void *); | |
| 87 extern void *fibheap_delete_node (fibheap_t, fibnode_t); | |
| 88 extern void fibheap_delete (fibheap_t); | |
| 89 extern fibheap_t fibheap_union (fibheap_t, fibheap_t); | |
| 90 | |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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91 #ifdef __cplusplus |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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92 } |
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77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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93 #endif |
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94 |
| 0 | 95 #endif /* _FIBHEAP_H_ */ |