Index: trunk/Ohana/src/libfits/include/gfitsio.h
===================================================================
--- trunk/Ohana/src/libfits/include/gfitsio.h	(revision 15743)
+++ trunk/Ohana/src/libfits/include/gfitsio.h	(revision 15751)
@@ -128,4 +128,5 @@
 int     gfits_write_header             PROTO((char *filename, Header *header)); 
 int     gfits_data_size                PROTO((Header *header));
+int     gfits_data_min_size            PROTO((Header *header));
 int 	gfits_extended_to_primary      PROTO((Header *header, int simple, char *comment));
 int 	gfits_primary_to_extended      PROTO((Header *header, char *exttype, char *comment));