/*
 *	Function	DateDiff
 *	Programmer	N.d'Alterio
 *	Date		13/09/95		
 *	
 *  Synopsis:	Returns difference between 2 date stamps in days,
 *		hours and minutes.
 *
 *  Arguments:	 dt1				First DateStamp structure.
 *		 dt2				Second DateStamp structure.
 *		*days				To return number of days.
 *		*hours				To return number of hours.
 *		*mins				To return number of minutes.
 *
 *  Returns:	None.
 *
 *  Variables:	total_minutes1			DateStamp1 converted into minutes
 *		total minutes2			DateStamp2 converted into minutes
 * 		time_diff			Temp variable
 *
 *  $Id: DateDiff.c 1.3 1995/09/23 16:45:49 daltern Exp $
 *
 */

#include "SpoolWatch.h"

void DateDiff( struct DateStamp dt1, struct DateStamp dt2, 
                                   int *days, int *hours, int *mins )

{

  long int total_mins1;
  long int total_mins2; 
 
  long int time_diff;

/*
 *   Convert datestamps to minutes before taking difference.
 */

  total_mins1 = ( 1440 * dt1.ds_Days ) + dt1.ds_Minute;
  total_mins2 = ( 1440 * dt2.ds_Days ) + dt2.ds_Minute;

  time_diff = total_mins1 - total_mins2;

/*
 *   Convert diff minutes to days/hours/minutes diff
 */

  *days      = time_diff / 1440;

  time_diff  = time_diff - ( 1440 * (*days) );
  *hours     = time_diff / 60;

  *mins      = time_diff - ( 60 * (*hours) );

  return;

}   /* end function DateDiff */


/*========================================================================*
                          END FUNCTION DateDiff
 *========================================================================*/