Add ability for reverse iteration to tower code, and corresponding

[pspp] / src / math / sort.h

diff --git a/src/math/sort.h b/src/math/sort.h
index 7d945622959a62e74f8e9ce995ef88fa13d4d77e..c6f86e9f4d39990a851b0b02c8a34fbfd164a4a6 100644 (file)
--- a/src/math/sort.h
+++ b/src/math/sort.h
@@ -1,6 +1,5 @@
 /* PSPP - computes sample statistics.
    Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
-   Written by Ben Pfaff <blp@gnu.org>.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
@@ -26,6 +25,7 @@
 struct casereader;
 struct dictionary;
 struct variable;
+struct casefile_factory;
 
 extern int min_buffers ;
 extern int max_buffers ;
@@ -58,7 +58,9 @@ struct sort_criteria
 void sort_destroy_criteria (struct sort_criteria *);
 
 struct casefile *sort_execute (struct casereader *,
-                               const struct sort_criteria *);
+                               const struct sort_criteria *,
+                              struct casefile_factory *
+                              );
 
 struct dataset ;
 bool sort_active_file_in_place (struct dataset *ds,