struct covariance;
struct variable;
struct ccase ;
+struct categoricals;
struct covariance * covariance_1pass_create (size_t n_vars, const struct variable *const *vars,
const struct variable *wv, enum mv_class excl);
struct covariance *
covariance_2pass_create (size_t n_vars, const struct variable *const *vars,
- size_t n_catvars, const struct variable *const *catvars,
+ struct categoricals *cats,
const struct variable *wv, enum mv_class excl);
void covariance_accumulate (struct covariance *, const struct ccase *);