sys-file-writer: Write identical sets of value labels only once.

[pspp-builds.git] / src / data / value-labels.h

diff --git a/src/data/value-labels.h b/src/data/value-labels.h
index 6c13ec9a5088b4104f898603aa130c9edf3613e0..f0f7ce01264c392552f7b96d130be6577ddb50a9 100644 (file)
--- a/src/data/value-labels.h
+++ b/src/data/value-labels.h
@@ -111,4 +111,8 @@ const struct val_lab *val_labs_next (const struct val_labs *,
                                      const struct val_lab *);
 const struct val_lab **val_labs_sorted (const struct val_labs *);
 
+/* Properties of entire sets. */
+unsigned int val_labs_hash (const struct val_labs *, unsigned int basis);
+bool val_labs_equal (const struct val_labs *, const struct val_labs *);
+
 #endif /* data/value-labels.h */