size_t interaction_variable_get_n_vars (const struct interaction_variable *);
double interaction_value_get_nonzero_entry (const struct interaction_value *);
const union value *interaction_value_get (const struct interaction_value *);
size_t interaction_variable_get_n_vars (const struct interaction_variable *);
double interaction_value_get_nonzero_entry (const struct interaction_value *);
const union value *interaction_value_get (const struct interaction_value *);
size_t interaction_get_n_numeric (const struct interaction_variable *);
size_t interaction_get_n_alpha (const struct interaction_variable *);
size_t interaction_get_n_vars (const struct interaction_variable *);
size_t interaction_get_n_numeric (const struct interaction_variable *);
size_t interaction_get_n_alpha (const struct interaction_variable *);
size_t interaction_get_n_vars (const struct interaction_variable *);
bool is_interaction (const struct variable *, const struct interaction_variable **, size_t);
struct interaction_value *
bool is_interaction (const struct variable *, const struct interaction_variable **, size_t);
struct interaction_value *
-interaction_case_data (const struct ccase *, const struct variable *,
- const struct interaction_variable **, size_t);
+interaction_case_data (const struct ccase *, const struct interaction_variable *);