// dtime.h - DOUBLE TIME FUNCTION DECLARATIONS
//
// MAINTENANCE HISTORY
// DATE		PROGRAMMER AND DETAILS
// 01-09-08	JS	Original
//
//-----------------------------------------------------------------------------

typedef double Dtime_t;
				// Double time data type
static const Dtime_t NULL_DTIME = -(65536.0*65536.0*65536.0*65536.0);
				// Reserved double time value (before the big
				// bang) used to represent an invalid time
Dtime_t PackDtime (int yr, int mo, int dy, int hr, int mi, int se);
				// Pack a double time value from its
				// components.
void UnpackDtime (Dtime_t, int*y4, int*mo, int*dy, int*hr, int*mi, int*se);
				// Unpack a double time value into its
				// components.
Dtime_t DtimeFromSql (const char *sqlTime);
				// Convert an SQL date or timestamp string
				// into the double time format.
char *SqlDateFromDtime (char *sqlDate, Dtime_t dtime);
				// Convert a double time value into an
				// SQL date string.  Return sqlDate.
char *SqlTimestampFromDtime (char *sqlTimestamp, Dtime_t dtime);
				// Convert a double time value into an
				// SQL timestamp string.  Return sqlTimestamp.
Dtime_t DtimeFromUserDate (const char *userDate);
				// Convert a user date in DD-MM-YY format into
				// the double time format.
char *UserDateFromDtime (char *userDate, Dtime_t dtime);
				// Convert the date components of a double
				// time value into a user date string in
				// DD-MM-YY format.  Return userDate.
char *UserTimeFromDtime (char *userTime, Dtime_t dtime);
				// Convert the time components of a double
				// time value into a user time string in
				// DD-MM-YY format.  Return userTime.