github.com/afumu/libc@v0.0.6/musl/src/time/__tm_to_secs.c (about)

     1  #include "time_impl.h"
     2  
     3  long long __tm_to_secs(const struct tm *tm)
     4  {
     5  	int is_leap;
     6  	long long year = tm->tm_year;
     7  	int month = tm->tm_mon;
     8  	if (month >= 12 || month < 0) {
     9  		int adj = month / 12;
    10  		month %= 12;
    11  		if (month < 0) {
    12  			adj--;
    13  			month += 12;
    14  		}
    15  		year += adj;
    16  	}
    17  	long long t = __year_to_secs(year, &is_leap);
    18  	t += __month_to_secs(month, is_leap);
    19  	t += 86400LL * (tm->tm_mday-1);
    20  	t += 3600LL * tm->tm_hour;
    21  	t += 60LL * tm->tm_min;
    22  	t += tm->tm_sec;
    23  	return t;
    24  }