#define order_by_str(K1,K2) (str_order(K1,K2)>0)
#define order_by_str_desc(K1,K2) (str_order(K1,K2)<0)
#define order_by_ascii(K1,K2) (str_ascii(K1,K2)>0)
#define order_by_str(K1,K2) (str_order(K1,K2)>0)
#define order_by_str_desc(K1,K2) (str_order(K1,K2)<0)
#define order_by_ascii(K1,K2) (str_ascii(K1,K2)>0)