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#include <time.h>
struct tm *nv_gmtime(const time_t *t) /*EXTRACT_INCL*/{
static struct tm tm;
unsigned long day, mon, year, yday=0, tod;
tod = (unsigned long)(*t) % 86400;
day = (unsigned long)(*t) / 86400;
tm.tm_wday = ((day+4) % 7);
tm.tm_sec = tod%60; tod /= 60;
tm.tm_min = tod%60;
tm.tm_hour = tod/60;
year = 4*day + 2;
year /= 1461;
day += 671;
day %= 1461; /* day 0 is march 1, 1972 */
if (day < 306) yday = 1;
if (day == 1460) { day = 365; yday = 59; }
else { day %= 365; yday += (day + 59) % 365; }
day *= 10;
mon = (day + 5) / 306;
day = day + 5 - 306 * mon;
day /= 10;
if (mon >= 10) mon -= 10;
else mon += 2; /* day 0,1,30, mon 0..11, year 1970=0,1,2 */
tm.tm_year = year+70;
tm.tm_mon = mon;
tm.tm_mday = day+1;
tm.tm_yday = yday;
return &tm;
}
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