find_days_dom
.find_days_dom = julian_find_days_dom,
.find_days_dom = chinese_find_days_dom,
.find_days_dom = find_days_dom,
int (*find_days_dom)(int dom, struct cal_day **dayp, char **edp);
int find_days_dom(int dom, struct cal_day **dayp, char **edp);
Calendar->find_days_dom != NULL) {
return (Calendar->find_days_dom)(di.dayofmonth, dayp, edp);