gboolean psppire_case_file_insert_case (PsppireCaseFile *cf, struct ccase *c, gint row);
-gint psppire_case_file_get_case_count (const PsppireCaseFile *cf);
+casenumber psppire_case_file_get_case_count (const PsppireCaseFile *cf);
union value * psppire_case_file_get_value (const PsppireCaseFile *cf,