MatCat.OpenSource/8sa1-gcc
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

fibheap.h: Tidy formatting.

Browse Source 
* fibheap.h: Tidy formatting.
        (fibnode_t): Limit degree to 31 bits to avoid warning.

From-SVN: r45088
This commit is contained in:
Richard Henderson 2001-08-21 18:53:38 -07:00 committed by Richard Henderson
parent 830a47ec5e
commit d7a0e799d3
2 changed files with 19 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/ChangeLog
View File

@ -1,3 +1,8 @@
2001-08-21 Richard Henderson <rth@redhat.com>
* fibheap.h: Tidy formatting.
(fibnode_t): Limit degree to 31 bits to avoid warning.
2001-08-20 Andrew Cagney <ac131313@redhat.com> 2001-08-20 Andrew Cagney <ac131313@redhat.com>
* floatformat.h (floatformat_arm_ext): Document as deprecated. * floatformat.h (floatformat_arm_ext): Document as deprecated.

27
include/fibheap.h
View File

@ -19,13 +19,12 @@ along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330, the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */ Boston, MA 02111-1307, USA. */
/* Fibonacci heaps are somewhat complex, but, there's an /* Fibonacci heaps are somewhat complex, but, there's an article in
article in DDJ on them that explains them pretty well: DDJ that explains them pretty well:
http://www.ddj.com/articles/1997/9701/9701o/9701o.htm?topic=algoritms http://www.ddj.com/articles/1997/9701/9701o/9701o.htm?topic=algoritms
Introduction to algorithms by Corman and Rivest also goes over Introduction to algorithms by Corman and Rivest also goes over them.
them.
The original paper that introduced them is "Fibonacci heaps and their The original paper that introduced them is "Fibonacci heaps and their
uses in improved network optimization algorithms" by Tarjan and uses in improved network optimization algorithms" by Tarjan and
@ -36,45 +35,47 @@ Boston, MA 02111-1307, USA. */
ExtractMin: O(lg n) amortized. O(n) worst case. ExtractMin: O(lg n) amortized. O(n) worst case.
DecreaseKey: O(1) amortized. O(lg n) worst case. DecreaseKey: O(1) amortized. O(lg n) worst case.
Insert: O(2) amortized. O(1) actual. Insert: O(2) amortized. O(1) actual.
Union: O(1) amortized. O(1) actual. Union: O(1) amortized. O(1) actual. */
*/
#ifndef _FIBHEAP_H_ #ifndef _FIBHEAP_H_
#define _FIBHEAP_H_ #define _FIBHEAP_H_
#include <ansidecl.h> #include <ansidecl.h>
typedef long fibheapkey_t;
typedef struct fibheap typedef struct fibheap
{ {
size_t nodes; size_t nodes;
struct fibnode *min; struct fibnode *min;
struct fibnode *root; struct fibnode *root;
} *fibheap_t; } *fibheap_t;
typedef long fibheapkey_t;
typedef struct fibnode typedef struct fibnode
{ {
struct fibnode *parent; struct fibnode *parent;
struct fibnode *child; struct fibnode *child;
struct fibnode *left; struct fibnode *left;
struct fibnode *right; struct fibnode *right;
unsigned int degree : sizeof(size_t) * CHAR_BIT - 2;
unsigned int mark:1;
fibheapkey_t key; fibheapkey_t key;
void *data; void *data;
unsigned int degree : 31;
unsigned int mark : 1;
} *fibnode_t; } *fibnode_t;
extern fibheap_t fibheap_new PARAMS ((void)); extern fibheap_t fibheap_new PARAMS ((void));
extern fibnode_t fibheap_insert PARAMS ((fibheap_t, fibheapkey_t, void *)); extern fibnode_t fibheap_insert PARAMS ((fibheap_t, fibheapkey_t, void *));
extern int fibheap_empty PARAMS ((fibheap_t)); extern int fibheap_empty PARAMS ((fibheap_t));
extern fibheapkey_t fibheap_min_key PARAMS ((fibheap_t)); extern fibheapkey_t fibheap_min_key PARAMS ((fibheap_t));
extern fibheapkey_t fibheap_replace_key PARAMS ((fibheap_t, fibnode_t, fibheapkey_t)); extern fibheapkey_t fibheap_replace_key PARAMS ((fibheap_t, fibnode_t,
extern void *fibheap_replace_key_data PARAMS ((fibheap_t, fibnode_t, fibheapkey_t, void *)); fibheapkey_t));
extern void *fibheap_replace_key_data PARAMS ((fibheap_t, fibnode_t,
fibheapkey_t, void *));
extern void *fibheap_extract_min PARAMS ((fibheap_t)); extern void *fibheap_extract_min PARAMS ((fibheap_t));
extern void *fibheap_min PARAMS ((fibheap_t)); extern void *fibheap_min PARAMS ((fibheap_t));
extern void *fibheap_replace_data PARAMS ((fibheap_t, fibnode_t, void *)); extern void *fibheap_replace_data PARAMS ((fibheap_t, fibnode_t, void *));
extern void *fibheap_delete_node PARAMS ((fibheap_t, fibnode_t)); extern void *fibheap_delete_node PARAMS ((fibheap_t, fibnode_t));
extern void fibheap_delete PARAMS ((fibheap_t)); extern void fibheap_delete PARAMS ((fibheap_t));
extern fibheap_t fibheap_union PARAMS ((fibheap_t, fibheap_t)); extern fibheap_t fibheap_union PARAMS ((fibheap_t, fibheap_t));
#endif /* _FIBHEAP_H_ */ #endif /* _FIBHEAP_H_ */