3 /* C defines the rounding for division in a nonsensical way */
4 #define Q(a,b) ((a)>0 ? (a)/(b) : -(((b)-(a)-1)/(b)))
6 time_t __tm_to_time(struct tm *tm)
8 time_t year = tm->tm_year + -100;
9 int month = tm->tm_mon;
10 int day = tm->tm_mday;
17 } else if (month < 0) {
25 z4 = Q(year - (month < 2), 4);
28 day += year*365 + z4 - z100 + z400 +
29 month[(int []){0,31,59,90,120,151,181,212,243,273,304,335}];
30 return (long long)day*86400
31 + tm->tm_hour*3600 + tm->tm_min*60 + tm->tm_sec
32 - -946684800; /* the dawn of time :) */