source: rtems/cpukit/score/src/coretodtoseconds.c @ 2728d9cf

4.104.114.84.95
Last change on this file since 2728d9cf was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on 11/17/99 at 17:51:34

Updated copyright notice.

  • Property mode set to 100644
File size: 1.4 KB
Line 
1/*
2 *  Time of Day (TOD) Handler
3 *
4 *
5 *  COPYRIGHT (c) 1989-1999.
6 *  On-Line Applications Research Corporation (OAR).
7 *
8 *  The license and distribution terms for this file may be
9 *  found in the file LICENSE in this distribution or at
10 *  http://www.OARcorp.com/rtems/license.html.
11 *
12 *  $Id$
13 */
14
15#include <rtems/system.h>
16#include <rtems/score/object.h>
17#include <rtems/score/thread.h>
18#include <rtems/score/tod.h>
19#include <rtems/score/watchdog.h>
20
21/*PAGE
22 *
23 *  _TOD_To_seconds
24 *
25 *  This routine returns the seconds from the epoch until the
26 *  current date and time.
27 *
28 *  Input parameters:
29 *    the_tod - pointer to the time and date structure
30 *
31 *  Output parameters:
32 *    returns    - seconds since epoch until the_tod
33 */
34
35unsigned32 _TOD_To_seconds(
36  TOD_Control *the_tod
37)
38{
39  unsigned32 time;
40  unsigned32 year_mod_4;
41
42  time = the_tod->day - 1;
43  year_mod_4 = the_tod->year & 3;
44
45  if ( year_mod_4 == 0 )
46    time += _TOD_Days_to_date[ 1 ][ the_tod->month ];
47  else
48    time += _TOD_Days_to_date[ 0 ][ the_tod->month ];
49
50  time += ( (the_tod->year - TOD_BASE_YEAR) / 4 ) *
51            ( (TOD_DAYS_PER_YEAR * 4) + 1);
52
53  time += _TOD_Days_since_last_leap_year[ year_mod_4 ];
54
55  time *= TOD_SECONDS_PER_DAY;
56
57  time += ((the_tod->hour * TOD_MINUTES_PER_HOUR) + the_tod->minute)
58             * TOD_SECONDS_PER_MINUTE;
59
60  time += the_tod->second;
61
62  return( time );
63}
64
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