1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
3 Written by Ben Pfaff <blp@gnu.org>.
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 typedef int hsh_compare_func (const void *, const void *, void *aux);
26 typedef unsigned hsh_hash_func (const void *, void *aux);
27 typedef void hsh_free_func (void *, void *aux);
29 /* Hash table iterator (opaque). */
32 size_t next; /* Index of next entry. */
36 unsigned hsh_hash_bytes (const void *, size_t);
37 unsigned hsh_hash_string (const char *);
38 unsigned hsh_hash_int (int);
39 unsigned hsh_hash_double (double);
42 struct hsh_table *hsh_create (int m, hsh_compare_func *,
43 hsh_hash_func *, hsh_free_func *,
45 void hsh_clear (struct hsh_table *);
46 void hsh_destroy (struct hsh_table *);
47 void **hsh_sort (struct hsh_table *);
48 void **hsh_data (struct hsh_table *);
49 void **hsh_sort_copy (struct hsh_table *);
50 void **hsh_data_copy (struct hsh_table *);
52 /* Search and insertion. */
53 void **hsh_probe (struct hsh_table *, const void *);
54 void *hsh_insert (struct hsh_table *, void *);
55 void *hsh_replace (struct hsh_table *, void *);
56 void *hsh_find (struct hsh_table *, const void *);
57 int hsh_delete (struct hsh_table *, const void *);
60 void *hsh_first (struct hsh_table *, struct hsh_iterator *);
61 void *hsh_next (struct hsh_table *, struct hsh_iterator *);
63 /* Search and insertion with assertion. */
65 void hsh_force_insert (struct hsh_table *, void *);
66 void *hsh_force_find (struct hsh_table *, const void *);
67 void hsh_force_delete (struct hsh_table *, const void *);
69 #define hsh_force_insert(A, B) ((void) (*hsh_probe (A, B) = B))
70 #define hsh_force_find(A, B) (hsh_find (A, B))
71 #define hsh_force_delete(A, B) ((void) hsh_delete (A, B))
74 /* Number of entries in hash table H. */
75 size_t hsh_count (struct hsh_table *);
79 void hsh_dump (struct hsh_table *);