datetime.h

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#ifndef DATETIME_H
#define DATETIME_H
 
typedef double DateTime;
 
#define Y_M_D 0
 
#define M_D_Y 1
 
#define D_M_Y 2
 
#define NO_DATE -693594 // 1/1/0001
 
#define DATE_STR_SIZE 12
 
#define TIME_STR_SIZE 9
 
#define TIME_STAMP_SIZE 21
 
DateTime datetime_encodeDate(int year, int month, int day);
 
DateTime datetime_encodeTime(int hour, int minute, int second);
 
void datetime_decodeDate(DateTime date, int* y, int* m, int* d);
 
void datetime_decodeTime(DateTime time, int* h, int* m, int* s);
 
int  datetime_monthOfYear(DateTime date);
 
int  datetime_dayOfYear(DateTime date);
 
int  datetime_dayOfWeek(DateTime date);
 
int  datetime_hourOfDay(DateTime date);
 
int  datetime_daysPerMonth(int year, int month);
 
void datetime_dateToStr(DateTime date, char* s);
 
void datetime_timeToStr(DateTime time, char* s);
 
void datetime_getTimeStamp(int fmt, DateTime aDate, int stampSize, char* timeStamp);
 
int  datetime_findMonth(char* s);
 
int  datetime_strToDate(char* s, DateTime* d);
 
int  datetime_strToTime(char* s, DateTime* t);
 
void datetime_setDateFormat(int fmt);
 
DateTime datetime_addSeconds(DateTime date1, double seconds);
 
DateTime datetime_addDays(DateTime date1, DateTime date2);
 
long datetime_timeDiff(DateTime date1, DateTime date2);
 
 
#endif //DATETIME_H