#include <stdbool.h>
#include "value.h"
-/* Types of user-missing values.
- Invisible--use access functions defined below instead. */
-enum mv_type
- {
- MV_NONE = 0, /* No user-missing values. */
- MV_1 = 1, /* One user-missing value. */
- MV_2 = 2, /* Two user-missing values. */
- MV_3 = 3, /* Three user-missing values. */
- MV_RANGE = 4, /* A range of user-missing values. */
- MV_RANGE_1 = 5 /* A range plus an individual value. */
- };
-
/* Missing values.
Opaque--use access functions defined below. */
-struct missing_values
+struct missing_values
{
- unsigned type; /* Number and type of missing values. */
+ int type; /* Types of missing values, one of MVT_*. */
int width; /* 0=numeric, otherwise string width. */
union value values[3]; /* Missing values. [y,z] are the range. */
};
+/* Classes of missing values. */
+enum mv_class
+ {
+ MV_NEVER = 0, /* Never considered missing. */
+ MV_USER = 1, /* Missing if value is user-missing. */
+ MV_SYSTEM = 2, /* Missing if value is system-missing. */
+ MV_ANY = MV_USER | MV_SYSTEM /* Missing if it is user or system-missing. */
+ };
void mv_init (struct missing_values *, int width);
-void mv_set_type(struct missing_values *mv, enum mv_type type);
+void mv_clear (struct missing_values *);
void mv_copy (struct missing_values *, const struct missing_values *);
bool mv_is_empty (const struct missing_values *);
typedef bool mv_is_missing_func (const struct missing_values *,
const union value *);
-/* Is a value system or user missing? */
-bool mv_is_value_missing (const struct missing_values *, const union value *);
-bool mv_is_num_missing (const struct missing_values *, double);
-bool mv_is_str_missing (const struct missing_values *, const char[]);
-
-/* Is a value user missing? */
-bool mv_is_value_user_missing (const struct missing_values *,
- const union value *);
-bool mv_is_num_user_missing (const struct missing_values *, double);
-bool mv_is_str_user_missing (const struct missing_values *, const char[]);
-
-/* Is a value system missing? */
-bool mv_is_value_system_missing (const struct missing_values *,
- const union value *);
+/* Is a value missing? */
+bool mv_is_value_missing (const struct missing_values *, const union value *,
+ enum mv_class);
+bool mv_is_num_missing (const struct missing_values *, double, enum mv_class);
+bool mv_is_str_missing (const struct missing_values *, const char[],
+ enum mv_class);
#endif /* missing-values.h */