New function for adding a numbering column to a casereader.

[pspp-builds.git] / src / data / casereader.h

diff --git a/src/data/casereader.h b/src/data/casereader.h
index d4a1cce5188a7a467569cbceb95ec9f30a1db402..ba65cb18e7cc7f7d9f54dce259a44e9774e10542 100644 (file)
--- a/src/data/casereader.h
+++ b/src/data/casereader.h
@@ -70,6 +70,7 @@ void casereader_swap (struct casereader *, struct casereader *);
 
 bool casereader_peek (struct casereader *, casenumber, struct ccase *)
      WARN_UNUSED_RESULT;
+bool casereader_is_empty (struct casereader *);
 
 bool casereader_error (const struct casereader *);
 void casereader_force_error (struct casereader *);
@@ -111,4 +112,8 @@ casereader_create_translator (struct casereader *, size_t output_value_cnt,
                               bool (*destroy) (void *aux),
                               void *aux);
 
+struct casereader *
+casereader_create_arithmetic_sequence (struct casereader *,
+                                       double first, double increment);
+
 #endif /* data/casereader.h */