Implement DATESUM, DATEDIFF functions.

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

diff --git a/src/data/calendar.h b/src/data/calendar.h
index f46e71fec0b8c32fb97b763598176a8a63bfe533..06d2fd3a49b0f350b1015e05fc8fa41223421304 100644 (file)
--- a/src/data/calendar.h
+++ b/src/data/calendar.h
@@ -12,4 +12,6 @@ int calendar_offset_to_mday (int ofs);
 int calendar_offset_to_yday (int ofs);
 int calendar_offset_to_wday (int ofs);
 
+int calendar_days_in_month (int y, int m);
+
 #endif /* calendar.h */