X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fcasereader.h;h=3df80cb08fb8d38acc302e0654a0217dd666287a;hb=5f8dc7ca9962b212d623566e287b0f1d365f6398;hp=f7e885e64412d8ffbbe5b8e5258258109814d997;hpb=b65cf0519aa1db140d30c878978f29b1e23c9cd0;p=pspp

diff --git a/src/data/casereader.h b/src/data/casereader.h
index f7e885e644..3df80cb08f 100644
--- a/src/data/casereader.h
+++ b/src/data/casereader.h
@@ -125,4 +125,21 @@ struct casereader *
 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);
+
+
 #endif /* data/casereader.h */