2 #define MIN(a,b) ((a) < (b) ? (a) : (b))
3 #define MAX(a,b) ((a) > (b) ? (a) : (b))
4 #define ROUND(x) ((int)((x)+0.5))
5 #define N_ELEMENTS(x) (sizeof(x)/sizeof((x)[0]))
37 int is_leap_year(year_t year);
38 int days_in_year(year_t year);
39 int days_in_month(year_t year, month_t month);
40 int weeks_in_month(year_t year, month_t month);
41 wday_t day_of_week(year_t year, month_t month, day_t day);
42 wday_t start_of_month(year_t year, month_t month);
43 day_t start_of_week(year_t year, month_t month, day_t day);
44 void add_days(year_t *year, month_t *month, day_t *day, int days);
46 /* Time to string functions */
47 const char *month_to_str(month_t month);
48 const char *month_to_string(month_t month);
49 const char *day_to_st(wday_t day);
50 const char *day_to_str(wday_t day);
51 const char *day_to_string(wday_t day);