#ifndef __TIMEUTIL_H__
# define __TIMEUTIL_H__

#ifdef __cplusplus
extern "C" {
#endif

#include <time.h>
#include <stdbool.h>

/* Check whether a given year is a leap year. */
static inline bool isleap(int yr)
{
   if(!(yr % 400)) return true;
   if(!(yr % 100)) return false;
   return !(yr & 3);
}

/* Number of days for the given month (0..11) and year. */
static inline int daysin(int month, int yr)
{
   static char count[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
   return count[month] + (month == 1 && isleap(yr));
}

#ifdef __cplusplus
}
#endif

#endif /*__TIMEUTIL_H__*/