1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2005 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU 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, see <http://www.gnu.org/licenses/>. */
18 #define missing_values_h 1
24 Opaque--use access functions defined below. */
27 int type; /* Types of missing values, one of MVT_*. */
28 int width; /* 0=numeric, otherwise string width. */
29 union value values[3]; /* Missing values. [y,z] are the range. */
32 /* Classes of missing values. */
35 MV_NEVER = 0, /* Never considered missing. */
36 MV_USER = 1, /* Missing if value is user-missing. */
37 MV_SYSTEM = 2, /* Missing if value is system-missing. */
38 MV_ANY = MV_USER | MV_SYSTEM /* Missing if it is user or system-missing. */
41 void mv_init (struct missing_values *, int width);
42 void mv_clear (struct missing_values *);
44 void mv_copy (struct missing_values *, const struct missing_values *);
45 bool mv_is_empty (const struct missing_values *);
46 int mv_get_width (const struct missing_values *);
48 bool mv_add_value (struct missing_values *, const union value *);
49 bool mv_add_str (struct missing_values *, const char[]);
50 bool mv_add_num (struct missing_values *, double);
51 bool mv_add_num_range (struct missing_values *, double low, double high);
53 bool mv_has_value (const struct missing_values *);
54 void mv_pop_value (struct missing_values *, union value *);
55 void mv_peek_value (const struct missing_values *mv, union value *v, int idx);
56 void mv_replace_value (struct missing_values *mv, const union value *v, int idx);
58 int mv_n_values (const struct missing_values *mv);
61 bool mv_has_range (const struct missing_values *);
62 void mv_pop_range (struct missing_values *, double *low, double *high);
63 void mv_peek_range (const struct missing_values *, double *low, double *high);
65 bool mv_is_resizable (const struct missing_values *, int width);
66 void mv_resize (struct missing_values *, int width);
68 typedef bool mv_is_missing_func (const struct missing_values *,
71 /* Is a value missing? */
72 bool mv_is_value_missing (const struct missing_values *, const union value *,
74 bool mv_is_num_missing (const struct missing_values *, double, enum mv_class);
75 bool mv_is_str_missing (const struct missing_values *, const char[],
78 #endif /* missing-values.h */