int __getTime(
const time_t timer,
struct tm *tmp
)
{
int days;
int timeOfDay;
int year;
int mon;
ldiv_t result;
/* Calculate days since epoch */
days = timer / SECSPERDAY;
timeOfDay = timer % SECSPERDAY;
if (timeOfDay < 0)
{
timeOfDay += SECSPERDAY;
days -= 1;
}
/* Calculate years since epoch */
year = days / DAYSPERYEAR;
while (__daysSinceEpoch(year, 0) > days)
{
year--;
}
/* Calculcate weekday */
tmp->tm_wday = (days + EPOCH_WDAY) % DAYSPERWEEK;
if (tmp->tm_wday < 0)
{
tmp->tm_wday += DAYSPERWEEK;
}
/* Find year and days left */
days -= __daysSinceEpoch(year, 0);
year += EPOCH_YEAR;
/* Calculate month */
for (mon = 0;
(days >= __julday(year - TM_YEAR_BASE, mon + 1, 0)) && (mon < 11);
mon++);
/* Setup time structure */
tmp->tm_year = year - TM_YEAR_BASE;
tmp->tm_mon = mon;
tmp->tm_mday = (days - __julday(tmp->tm_year, mon, 0)) + 1;
tmp->tm_yday = __julday(tmp->tm_year, mon, tmp->tm_mday) - 1;
tmp->tm_hour = timeOfDay / SECSPERHOUR;
timeOfDay %= SECSPERHOUR;
ldiv_r((long) timeOfDay, (long) SECSPERMIN, &result);
tmp->tm_min = result.quot;
tmp->tm_sec = result.rem;
return OK;
}
ldiv_t ldiv(
long numer,
long denom
)
{
static ldiv_t result;
ldiv_r(numer, denom, &result);
return result;
}
int __getTime
(
const time_t timer, /* time represented as seconds from epoch */
struct tm * tmp /* pointer to broken-down time structure */
)
{
long days;
long timeOfDay;
long year;
long mon;
ldiv_t result;
/* Calulate number of days since epoch */
days = timer / SECSPERDAY;
timeOfDay = timer % SECSPERDAY;
/* If time of day is negative, subtract one day, and add SECSPERDAY
* to make it positive.
*/
if(timeOfDay<0)
{
timeOfDay+=SECSPERDAY;
days-=1;
}
/* Calulate number of years since epoch */
year = days / DAYSPERYEAR;
while ( __daysSinceEpoch (year, 0) > days )
year--;
/* Calulate the day of the week */
tmp->tm_wday = (days + EPOCH_WDAY) % DAYSPERWEEK;
/*
* If there is a negative weekday, add DAYSPERWEEK to make it positive
*/
if(tmp->tm_wday<0)
tmp->tm_wday+=DAYSPERWEEK;
/* Find year and remaining days */
days -= __daysSinceEpoch (year, 0);
year += EPOCH_YEAR;
/* Find month */
/* __jullday needs years since TM_YEAR_BASE (SPR 4251) */
for ( mon = 0;
(days >= __julday (year - TM_YEAR_BASE, mon + 1, 0)) && (mon < 11);
mon++ )
;
/* Initialise tm structure */
tmp->tm_year = year - TM_YEAR_BASE; /* years since 1900 */
tmp->tm_mon = mon;
tmp->tm_mday = (days - __julday (tmp->tm_year, mon, 0)) + 1;
tmp->tm_yday = __julday (tmp->tm_year, mon, tmp->tm_mday) - 1;
tmp->tm_hour = timeOfDay / SECSPERHOUR;
timeOfDay %= SECSPERHOUR;
ldiv_r (timeOfDay, SECSPERMIN, &result);
tmp->tm_min = result.quot;
tmp->tm_sec = result.rem;
return(OK);
}
