casereader_create_arithmetic_sequence (struct casereader *,
double first, double increment);
+enum rank_error
+ {
+ RANK_ERR_NONE = 0,
+ RANK_ERR_NEGATIVE_WEIGHT = 0x01,
+ RANK_ERR_UNSORTED = 0x02
+ };
+
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,
+ enum rank_error *err,
distinct_func *distinct_callback, void *aux);