/*
* Time of Day (TOD) Handler -- Validate Classic TOD
*
*
* COPYRIGHT (c) 1989-2007.
* 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.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/system.h>
#include <rtems/rtems/clock.h>
/*
* The following array contains the number of days in all months.
* The first dimension should be 1 for leap years, and 0 otherwise.
* The second dimension should range from 1 to 12 for January to
* February, respectively.
*/
const uint32_t _TOD_Days_per_month[ 2 ][ 13 ] = {
{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
{ 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
};
/*PAGE
*
* _TOD_Validate
*
* This kernel routine checks the validity of a date and time structure.
*
* Input parameters:
* the_tod - pointer to a time and date structure
*
* Output parameters:
* TRUE - if the date, time, and tick are valid
* FALSE - if the the_tod is invalid
*
* NOTE: This routine only works for leap-years through 2099.
*/
bool _TOD_Validate(
rtems_time_of_day *the_tod
)
{
uint32_t days_in_month;
if ((!the_tod) ||
(the_tod->ticks >=
(TOD_MICROSECONDS_PER_SECOND / _TOD_Microseconds_per_tick)) ||
(the_tod->second >= TOD_SECONDS_PER_MINUTE) ||
(the_tod->minute >= TOD_MINUTES_PER_HOUR) ||
(the_tod->hour >= TOD_HOURS_PER_DAY) ||
(the_tod->month == 0) ||
(the_tod->month > TOD_MONTHS_PER_YEAR) ||
(the_tod->year < TOD_BASE_YEAR) ||
(the_tod->day == 0) )
return false;
if ( (the_tod->year % 4) == 0 )
days_in_month = _TOD_Days_per_month[ 1 ][ the_tod->month ];
else
days_in_month = _TOD_Days_per_month[ 0 ][ the_tod->month ];
if ( the_tod->day > days_in_month )
return false;
return true;
}
