bool var_has_value_labels (const struct variable *);
const struct val_labs *var_get_value_labels (const struct variable *);
void var_set_value_labels (struct variable *, const struct val_labs *);
bool var_has_value_labels (const struct variable *);
const struct val_labs *var_get_value_labels (const struct variable *);
void var_set_value_labels (struct variable *, const struct val_labs *);