casereader_create_arithmetic_sequence (struct casereader *,
double first, double increment);
+
+typedef void distinct_func (double v, casenumber n, double w, void *aux);
+
+struct casereader *
+casereader_create_append_rank (struct casereader *,
+ const struct variable *v, const struct variable *w,
+ distinct_func *distinct_callback, void *aux);
+
+
#endif /* data/casereader.h */