This file is indexed.

/usr/include/hdf/tbbt.h is in libhdf4-dev 4.2.10-3.2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF.  The full HDF copyright notice, including       *
 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at      *
 * http://hdfgroup.org/products/hdf4/doc/Copyright.html.  If you do not have *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* $Id: tbbt.h 6043 2014-01-21 21:09:03Z acheng $ */

/* "tbbt.h" -- Data types/routines for threaded, balanced, binary trees. */
/* Extended from Knuth 6.2.3, Algorithm A */

#ifndef TBBT_H
#define TBBT_H

#include "H4api_adpt.h"

#ifdef lint     /* lint always complains but may complain more if... */
# define   TBBT_INTERNALS   /* TBBT_INTERNALS not always defined */
#endif /* lint */

typedef struct tbbt_node TBBT_NODE;

/* Threaded node structure */
struct tbbt_node
  {
      VOIDP       data;         /* Pointer to user data to be associated with node */
      VOIDP       key;          /* Field to sort nodes on */

#ifdef TBBT_INTERNALS
# define   PARENT  0
# define   LEFT    1
# define   RIGHT   2
      TBBT_NODE  *link[3];      /* Pointers to parent, left child, and right child */
# define  Parent    link[PARENT]
# define  Lchild    link[LEFT]
# define  Rchild    link[RIGHT]
# define  TBBT_FLAG unsigned long
# define  TBBT_LEAF unsigned long
      TBBT_FLAG   flags;        /* Combination of the following bit fields: */
# define  TBBT_HEAVY(s) s       /* If the `s' sub-tree is deeper than the other */
# define  TBBT_DOUBLE   4       /* If "heavy" sub-tree is two levels deeper */
# define  TBBT_INTERN   8       /* If node is internal (has two children) */
# define  TBBT_UNBAL    ( TBBT_HEAVY(LEFT) | TBBT_HEAVY(RIGHT) )
# define  TBBT_FLAGS    ( TBBT_UNBAL | TBBT_INTERN | TBBT_DOUBLE )
# define  TBBT_CHILD(s) ( TBBT_INTERN | TBBT_HEAVY(s) )
      TBBT_LEAF   lcnt;         /* count of left children */
      TBBT_LEAF   rcnt;         /* count of right children */
# define  LeftCnt(node) ( (node)->lcnt )    /* Left descendants */
# define  RightCnt(node) ( (node)->rcnt )   /* Left descendants */
# define  Cnt(node,s)   ( LEFT==(s) ? LeftCnt(node) : RightCnt(node) )
# define  HasChild(n,s) ( Cnt(n,s)>0 )
# define  Heavy(n,s)    ( (s) & (LeftCnt(n)>RightCnt(n) ? LEFT : \
                 LeftCnt(n)==RightCnt(n) ? 0 : RIGHT))
# define  Intern(n)     ( LeftCnt(n) && RightCnt(n) )
# define  UnBal(n)      ( LeftCnt(n)>RightCnt(n) ? LEFT : \
                 LeftCnt(n)==RightCnt(n) ? 0 : RIGHT)
# define  Double(n)     ( TBBT_DOUBLE & (n)->flags )
# define  Other(side)   ( LEFT + RIGHT - (side) )
# define  Delta(n,s)    (  ( Heavy(n,s) ? 1 : -1 )                          \
                            *  ( Double(n) ? 2 : UnBal(n) ? 1 : 0 )  )
# define  SetFlags(n,s,b,i)   (  ( -2<(b) && (b)<2 ? 0 : TBBT_DOUBLE )   \
    |  ( 0>(b) ? TBBT_HEAVY(s) : (b)>0 ? TBBT_HEAVY(Other(s)) : 0 )        \
    |  ( (i) ? TBBT_INTERN : 0 )  )
  };

/* Pointer to the tbbt node free list */
static TBBT_NODE *tbbt_free_list=NULL;

typedef struct tbbt_tree TBBT_TREE;
/* Threaded tree structure */
struct tbbt_tree
  {
      TBBT_NODE  *root;
      unsigned long count;      /* The number of nodes in the tree currently */
      uintn       fast_compare; /* use a faster in-line compare (with casts) instead of function call */
      intn        (*compar) (VOIDP k1, VOIDP k2, intn cmparg);
      intn        cmparg;
#endif                          /* TBBT_INTERNALS */
  };

/* Define the "fast compare" values */
#define TBBT_FAST_UINT16_COMPARE    1
#define TBBT_FAST_INT32_COMPARE     2

#ifndef TBBT_INTERNALS
typedef TBBT_NODE **TBBT_TREE;
#endif /* TBBT_INTERNALS */

/* Return maximum of two scalar values (use arguments w/o side effects): */
#define   Max(a,b)  ( (a) > (b) ? (a) : (b) )

/* These routines are designed to allow use of a general-purpose balanced tree
 * implimentation.  These trees are appropriate for maintaining in memory one
 * or more lists of items, each list sorted according to key values (key values
 * must form a "completely ordered set") where no two items in a single list
 * can have the same key value.  The following operations are supported:
 *     Create an empty list
 *     Add an item to a list
 *     Look up an item in a list by key value
 *     Look up the Nth item in a list
 *     Delete an item from a list
 *     Find the first/last/next/previous item in a list
 *     Destroy a list
 * Each of the above operations requires Order(log(N)) time where N is the
 * number of items in the list (except for list creation which requires
 * constant time and list destruction which requires Order(N) time if the user-
 * supplied free-data-item or free-key-value routines require constant time).
 * Each of the above operations (except create and destroy) can be performed
 * on a subtree.
 *
 * Each node of a tree has associated with it a generic pointer (void *) which
 * is set to point to one such "item" and a generic pointer to point to that
 * item's "key value".  The structure of the items and key values is up to the
 * user to define.  The user must specify a method for comparing key values.
 * This routine takes three arguments, two pointers to key values and a third
 * integer argument.  You can specify a routine that expects pointers to "data
 * items" rather than key values in which case the pointer to the key value in
 * each node will be set equal to the pointer to the data item.
 *
 * Since the "data item" pointer is the first field of each tree node, these
 * routines may be used without this "tbbt.h" file.  For example, assume "ITM"
 * is the structre definition for the data items you want to store in lists:
 * ITM ***tbbtdmake( int (*cmp)(void *,void *,int), int arg );
 * ITM **root= NULL;        (* How to create an empty tree w/o tbbtdmake() *)
 * ITM **tbbtdfind( ITM ***tree, void *key, ITM ***pp );
 * ITM **tbbtfind( ITM **root, void *key, int (*cmp)(), int arg, ITM ***pp );
 * ITM **tbbtdless( ITM ***tree, void *key, ITM ***pp );
 * ITM **tbbtless( ITM **root, void *key, int (*cmp)(), int arg, ITM ***pp );
 * ITM **tbbtindx( ITM **root, long indx );
 * ITM **tbbtdins( ITM ***tree, ITM *item, void *key );
 * ITM **tbbtins( ITM ***root, ITM *item, void *key, int (*cmp)(), int arg );
 * ITM *tbbtrem( ITM ***root, ITM **node, void **kp );
 * ITM **tbbtfirst( ITM **root ), **tbbtlast( ITM **root );
 * ITM **tbbtnext( ITM **node ), **tbbtprev( ITM **node );
 * ITM ***tbbtdfree( ITM ***tree, void (*df)(ITM *), void (*kf)(void *) );
 * void tbbtfree( ITM ***root, void (*df)(ITM *), void (*kf)(void *) );
 */

#if defined c_plusplus || defined __cplusplus
extern      "C"
{
#endif                          /* c_plusplus || __cplusplus */

HDFLIBAPI TBBT_TREE  *tbbtdmake
                (intn (*compar) (VOIDP, VOIDP, intn), intn arg, uintn fast_compare);
/* Allocates and initializes an empty threaded, balanced, binary tree and
 * returns a pointer to the control structure for it.  You can also create
 * empty trees without this function as long as you never use tbbtd* routines
 * (tbbtdfind, tbbtdins, tbbtdfree) on them.
 * Examples:
 *     int keycmp();
 *     TBBT_ROOT *root= tbbtdmake( keycmp, (int)keysiz , 0);
 * or
 *     void *root= tbbtdmake( strcmp, 0 , 0);
 * or
 *     void *root= tbbtdmake( keycmp, (int)keysiz , TBBT_FAST_UINT16_COMPARE);
 * or
 *     TBBT_NODE *root= NULL;        (* Don't use tbbtd* routines *)
 * `cmp' is the routine to be used to compare two key values [in tbbtdfind()
 * and tbbtdins()].  The arguments to `cmp' are the two keys to compare
 * and `arg':  (*cmp)(k1,k2,arg).  `cmp' is expected to return 0 if its first
 * two arguments point to identical key values, -1 (or any integer less than 0)
 * if k1 points to a key value lower than that pointed to by k2, and 1 (or any
 * integer greater than 0) otherwise.  If `cmp' is NULL, memcmp is used.  If
 * `cmp' is NULL and `arg' is not greater than 0L, `1+strlen(key1)' is used in
 * place of `arg' to emulate strcmp():  memcmp( k1, k2, 1+strlen(k1) ).  You
 * can use strcmp() directly (as in the second example above) as long as your C
 * compiler does not assume strcmp() will always be passed exactly 2 arguments
 * (only newer, ANSI-influenced C compilers are likely to be able to make this
 * kind of assumption).  You can also use a key comparison routine that expects
 * pointers to data items rather than key values.
 *  The "fast compare" option is for keys of simple numeric types (currently
 *      uint16 and int32) and avoids the function call for faster searches in
 *      some cases.  The key comparison routine is still required for some
 *      insertion routines which use it.
 *
 * Most of the other routines expect a pointer to a root node of a tree, not
 * a pointer to the tree's control structure (only tbbtdfind(), tbbtdins(),
 * and tbbtdfree() expect pointers to control structures).  However TBBT_TREE
 * is just defined as "**TBBT_NODE" (unless you have defined TBBT_INTERNALS so
 * you have access to the internal structure of the nodes) so
 *     TBBT_TREE *tree1= tbbtdmake( NULL, 0 );
 * is equivalent to
 *     TBBT_NODE **tree1= tbbtdmake( NULL, 0 );
 * So could be used as:
 *     node= tbbtdfind( tree1, key, NULL );
 *     node= tbbtfind( *tree1, key, compar, arg, NULL );
 *     node= tbbtdless( tree1, key, NULL );
 *     node= tbbtless( *tree1, key, compar, arg, NULL );
 *     node= tbbtdins( tree1, item, key );
 *     node= tbbtins( tree1, item, key, compar, arg );
 *     item= tbbtrem( tree1, tbbtdfind(tree1,key,NULL), NULL );
 *     item= tbbtrem( tree1, tbbtfind(*tree1,key,compar,arg,NULL), NULL );
 *     tree1= tbbtdfree( tree1, free, NULL );       (* or whatever *)
 * while
 *     TBBT_NODE *root= NULL;
 * would be used like:
 *     node= tbbtfind( root, key );
 *     node= tbbtins( &root, item, key );
 *     node= tbbtrem( &root, tbbtfind(root,key), NULL );
 *     tbbtfree( &root, free, NULL );               (* or whatever *)
 * Never use tbbtfree() on a tree allocated with tbbtdmake() or on a sub-tree
 * of ANY tree.  Never use tbbtdfree() except on a tbbtdmake()d tree.
 */

HDFLIBAPI TBBT_NODE  *tbbtdfind
                (TBBT_TREE * tree, VOIDP key, TBBT_NODE ** pp);
HDFLIBAPI TBBT_NODE  *tbbtfind
                (TBBT_NODE * root, VOIDP key, intn (*cmp) (VOIDP, VOIDP, intn),
                 intn arg, TBBT_NODE ** pp);
HDFLIBAPI TBBT_NODE  *tbbtdless
                (TBBT_TREE * tree, VOIDP key, TBBT_NODE ** pp);
HDFLIBAPI TBBT_NODE  *tbbtless
                (TBBT_NODE * root, VOIDP key, intn (*cmp) (VOIDP, VOIDP, intn),
                 intn arg, TBBT_NODE ** pp);
/* Locate a node based on the key given.  A pointer to the node in the tree
 * with a key value matching `key' is returned.  If no such node exists, NULL
 * is returned.  Whether a node is found or not, if `pp' is not NULL, `*pp'
 * will be set to point to the parent of the node we are looking for (or that
 * node that would be the parent if the node is not found).  tbbtdfind() is
 * used on trees created using tbbtdmake() (so that `cmp' and `arg' don't have
 * to be passed).  tbbtfind() can be used on the root or any subtree of a tree
 * create using tbbtdmake() and is used on any tree (or subtree) created with-
 * out using tbbtdmake().  tbbtless() & tbbtdless() work exactly like tbbtfind()
 * and tbbtdfind() except that they find the node with a key which is less than
 * or equal to the key given to them.
 */

HDFLIBAPI TBBT_NODE  *tbbtindx
                (TBBT_NODE * root, int32 indx);
/* Locate the node that has `indx' nodes with lesser key values.  This is like
 * an array lookup with the first item in the list having index 0.  For large
 * values of `indx', this call is much faster than tbbtfirst() followed by
 * `indx' tbbtnext()s.  Thus `tbbtindx(&root,0L)' is equivalent to (and almost
 * as fast as) `tbbtfirst(root)'.
 */

HDFLIBAPI TBBT_NODE  *tbbtdins
                (TBBT_TREE * tree, VOIDP item, VOIDP key);
HDFLIBAPI TBBT_NODE  *tbbtins
                (TBBT_NODE ** root, VOIDP item, VOIDP key, intn (*cmp) (VOIDP, VOIDP, intn), intn arg);
/* Insert a new node to the tree having a key value of `key' and a data pointer
 * of `item'.  If a node already exists in the tree with key value `key' or if
 * malloc() fails, NULL is returned (no node is inserted), otherwise a pointer
 * to the inserted node is returned.  `cmp' and `arg' are as for tbbtfind().
 */

HDFLIBAPI VOIDP       tbbtrem
                (TBBT_NODE ** root, TBBT_NODE * node, VOIDP *kp);
/* Remove the node pointed to by `node' from the tree with root `root'.  The
 * data pointer for the deleted node is returned.  If the second argument is
 * NULL, NULL is returned.  If `kp' is not NULL, `*kp' is set to point to the
 * key value for the deleted node.  Examples:
 *     data= tbbtrem( tree, tbbtdfind(tree,key), &kp );  free(data);  free(kp);
 *     data= tbbtrem( &root, tbbtfind(root,key,compar,arg), NULL );
 *     data= tbbtrem( &tree->root, tbbtdfind(tree,key), NULL );
 */

HDFLIBAPI TBBT_NODE  *tbbtfirst
                (TBBT_NODE * root);
HDFLIBAPI TBBT_NODE  *tbbtlast
                (TBBT_NODE * root);
/* Returns a pointer to node from the tree with the lowest(first)/highest(last)
 * key value.  If the tree is empy NULL is returned.  Examples:
 *     node= tbbtfirst(*tree);
 *     node= tbbtfirst(root);
 *     node= tbbtlast(tree->root);
 *     node= tbbtlast(node);        (* Last node in a sub-tree *)
 */

HDFLIBAPI TBBT_NODE  *tbbtnext
                (TBBT_NODE * node);
HDFLIBAPI TBBT_NODE  *tbbtprev
                (TBBT_NODE * node);
/* Returns a pointer the node from the tree with the next highest (previous
 * lowest) key value relative to the node pointed to by `node'.  If `node'
 * points the last (first) node of the tree, NULL is returned.
 */

HDFLIBAPI TBBT_TREE  *tbbtdfree
                (TBBT_TREE * tree, VOID(*fd) (VOIDP), VOID(*fk) (VOIDP));
HDFLIBAPI VOID        tbbtfree
                (TBBT_NODE ** root, VOID(*fd) (VOIDP), VOID(*fk) (VOIDP));
/* Frees up an entire tree.  `fd' is a pointer to a function that frees/
 * destroys data items, and `fk' is the same for key values.
 *     void free();
 *       tree= tbbtdfree( tree, free, free );
 *       tbbtfree( &root, free, free );
 * is a typical usage, where keys and data are individually malloc()d.  If `fk'
 * is NULL, no action is done for the key values (they were allocated on the
 * stack, as a part of each data item, or together with one malloc() call, for
 * example) and likewise for `fd'.  tbbtdfree() always returns NULL and
 * tbbtfree() always sets `root' to be NULL.
 */

HDFLIBAPI VOID        tbbtprint
                (TBBT_NODE * node);
/* Prints out the data in a node */

HDFLIBAPI VOID        tbbtdump
                (TBBT_TREE * tree, intn method);
/* Prints an entire tree.  The method variable determines which sort of
 * traversal is used:
 *      -1 : Pre-Order Traversal
 *       1 : Post-Order Traversal
 *       0 : In-Order Traversal
 */

HDFLIBAPI long        tbbtcount
                (TBBT_TREE * tree);

/* Terminate the buffers used in the tbbt*() interface */
HDFPUBLIC intn tbbt_shutdown(void);

#if defined c_plusplus || defined __cplusplus
}
#endif                          /* c_plusplus || __cplusplus */

#endif                          /* TBBT_H */