/* PSPP - computes sample statistics. Copyright (C) 2005 Free Software Foundation, Inc. Written by Ben Pfaff . This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #if !missing_values_h #define missing_values_h 1 #include #include "val.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 { unsigned type; /* Number and type of missing values. */ int width; /* 0=numeric, otherwise string width. */ union value values[3]; /* Missing values. [y,z] are the range. */ }; void mv_init (struct missing_values *, int width); void mv_copy (struct missing_values *, const struct missing_values *); bool mv_is_empty (const struct missing_values *); int mv_get_width (const struct missing_values *); bool mv_add_value (struct missing_values *, const union value *); bool mv_add_str (struct missing_values *, const unsigned char[]); bool mv_add_num (struct missing_values *, double); bool mv_add_num_range (struct missing_values *, double low, double high); bool mv_has_value (struct missing_values *); void mv_pop_value (struct missing_values *, union value *); bool mv_has_range (struct missing_values *); void mv_pop_range (struct missing_values *, double *low, double *high); bool mv_is_resizable (struct missing_values *, int width); void mv_resize (struct missing_values *, int width); typedef bool 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 unsigned 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 unsigned char[]); /* Is a value system missing? */ bool mv_is_value_system_missing (const struct missing_values *, const union value *); #endif /* missing-values.h */