View difference between Paste ID: WBMfqXhp and R6WfPbVu

 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <time.h>
 
-#if 0
+
 #define Q(a,b) ((a)>0 ? (a)/(b) : -(((b)-(a)-1)/(b)))
 
 time_t tm_to_time(struct tm *tm)
-/* copied from Musl C awesome small implementation, see LICENSE. */
+
-time_t
+
-tm_to_time(struct tm *tm) {
+
-	time_t year = tm->tm_year - 100;
+
-	int day = tm->tm_mday;
+
 
-	/* TODO: shouldnt 335 be 334, if so file a bug for Musl, test this */
+
-	int daysbeforemon[] = { 0,31,59,90,120,151,181,212,243,273,304,335 };
+
 		year += month/12;
-	z4 = Q(year - (tm->tm_mon < 2), 4);
+
 	} else if (month < 0) {
 		year += month/12;
-	day += year * 365 + z4 - z100 + z400 +
+
-		daysbeforemon[tm->tm_mon];
+
-	return (time_t)day * 86400
+
-		+ tm->tm_hour * 3600 + tm->tm_min * 60 + tm->tm_sec
+
 		}
 	}
-#endif
+
 	z100 = Q(z4, 25);
 	z400 = Q(z100, 4);
 	/* BUG MAYBE: change 335 to 334? */
 	day += year*365 + z4 - z100 + z400 +
 		month[(int []){0,31,59,90,120,151,181,212,243,273,304,335}];
 	return (long long)day*86400
 		+ tm->tm_hour*3600 + tm->tm_min*60 + tm->tm_sec
 		- -946684800; /* the dawn of time :) */
 }
 
 int
 main(int argc, char **argv) {
 	time_t t1;
 	time_t t2;
 	unsigned int i;
 	struct tm tm;
 
 	setenv("TZ", "UTC", 1);
 	tzset();
 
 	for(i = 100; i < 133; i++) {
 		memset(&tm, 0, sizeof(tm));
 		tm.tm_mon = 11;
 		tm.tm_mday = 20;
 		tm.tm_year = i;
 		tm.tm_isdst = -1;
 		t1 = tm_to_time(&tm);
 		memset(&tm, 0, sizeof(tm));
 		tm.tm_mon = 11;
 		tm.tm_mday = 20;
 		tm.tm_year = i;
 		tm.tm_isdst = -1;
 		t2 = timegm(&tm);
 		if(t1 != t2) {
 			printf("Different time: year: %d, %d, %d\n", tm.tm_year + 1900, t1, t2);
 		}
 	}
 	return EXIT_SUCCESS;
 }