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/*

 *  Time of Day (TOD) Handler

 *

 *

 *  COPYRIGHT (c) 1989-1999.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  The license and distribution terms for this file may be

 *  found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  $Id: coretodtoseconds.c,v 1.2 2001-09-27 11:59:34 chris Exp $

 */

#include <rtems/system.h>

#include <rtems/score/object.h>

#include <rtems/score/thread.h>

#include <rtems/score/tod.h>

#include <rtems/score/watchdog.h>

/*PAGE

 *

 *  _TOD_To_seconds

 *

 *  This routine returns the seconds from the epoch until the

 *  current date and time.

 *

 *  Input parameters:

 *    the_tod - pointer to the time and date structure

 *

 *  Output parameters:

 *    returns    - seconds since epoch until the_tod

 */

unsigned32 _TOD_To_seconds(

  TOD_Control *the_tod

)

{

  unsigned32 time;

  unsigned32 year_mod_4;

  time = the_tod->day - 1;

  year_mod_4 = the_tod->year & 3;

  if ( year_mod_4 == 0 )

    time += _TOD_Days_to_date[ 1 ][ the_tod->month ];

  else

    time += _TOD_Days_to_date[ 0 ][ the_tod->month ];

  time += ( (the_tod->year - TOD_BASE_YEAR) / 4 ) *

            ( (TOD_DAYS_PER_YEAR * 4) + 1);

  time += _TOD_Days_since_last_leap_year[ year_mod_4 ];

  time *= TOD_SECONDS_PER_DAY;

  time += ((the_tod->hour * TOD_MINUTES_PER_HOUR) + the_tod->minute)

             * TOD_SECONDS_PER_MINUTE;

  time += the_tod->second;

  return( time );

}