X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fcategoricals.h;h=697d846b48351c729b7cc6013aab8099aebbf3bd;hb=46fdaed173d06e42dac6712e142bc9f7898075d7;hp=9e58f59eb0c2890bc6260089a1369b4cf9cb5629;hpb=11b8d81d6f403209b15bdf5a58ed2b98cd4ee3bb;p=pspp-builds.git

diff --git a/src/math/categoricals.h b/src/math/categoricals.h
index 9e58f59e..697d846b 100644
--- a/src/math/categoricals.h
+++ b/src/math/categoricals.h
@@ -42,6 +42,14 @@ size_t categoricals_n_count (const struct categoricals *cat, size_t n);
 /* Return the total number of categories */
 size_t categoricals_total (const struct categoricals *cat);
 
+/*
+  Return the total number of variables which participated in these categoricals.
+  Due to the possibility of missing values, this is NOT necessarily
+  equal to the number of variables passed in when the object was
+  created.
+*/
+size_t categoricals_get_n_variables (const struct categoricals *cat);
+
 /* Return the index for variable N */
 int categoricals_index (const struct categoricals *cat, size_t n, const union value *val);
 
@@ -61,4 +69,5 @@ double categoricals_get_binary_by_subscript (const struct categoricals *cat, int
 
 
 
+
 #endif