-double expr_ymd_to_date (double year, double month, double day);
-double expr_ymd_to_ofs (double year, double month, double day);
-double expr_wkyr_to_date (double wk, double yr);
-double expr_yrday_to_date (double yr, double day);
-double expr_yrmoda (double year, double month, double day);
+double expr_ymd_to_date (int year, int month, int day,
+ const struct expression *, const struct expr_node *,
+ int ya, int ma, int da);
+double expr_ymd_to_ofs (int y, int m, int d,
+ const struct expression *, const struct expr_node *,
+ int ya, int ma, int da);