1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 #include <libpspp/misc.h>
28 /* "Short" strings, which are generally those no more than 8
29 characters wide, can participate in more operations than
31 #define MAX_SHORT_STRING (MAX (ROUND_UP (SIZEOF_DOUBLE, 2), 8))
32 #define MIN_LONG_STRING (MAX_SHORT_STRING + 1)
33 #define MAX_STRING 32767
36 #define SYSMIS (-DBL_MAX)
37 #define LOWEST second_lowest_value
38 #define HIGHEST DBL_MAX
40 /* A numeric or short string value.
41 Multiple consecutive values represent a long string. */
45 char s[MAX_SHORT_STRING];
48 union value *value_dup (const union value *, int width);
49 int compare_values (const union value *, const union value *, int width);
50 unsigned hash_value (const union value *, int width);