setjmp: optimize longjmp prologues

[musl] / src / time / __secs_to_tm.c

diff --git a/src/time/__secs_to_tm.c b/src/time/__secs_to_tm.c
index f3c1cf9..093d902 100644 (file)
--- a/src/time/__secs_to_tm.c
+++ b/src/time/__secs_to_tm.c
@@ -10,10 +10,10 @@
 
 int __secs_to_tm(long long t, struct tm *tm)
 {
-       long long days, secs;
+       long long days, secs, years;
        int remdays, remsecs, remyears;
        int qc_cycles, c_cycles, q_cycles;
-       int years, months;
+       int months;
        int wday, yday, leap;
        static const char days_in_month[] = {31,30,31,30,31,31,30,31,30,31,31,29};
 
@@ -55,20 +55,21 @@ int __secs_to_tm(long long t, struct tm *tm)
        yday = remdays + 31 + 28 + leap;
        if (yday >= 365+leap) yday -= 365+leap;
 
-       years = remyears + 4*q_cycles + 100*c_cycles + 400*qc_cycles;
+       years = remyears + 4*q_cycles + 100*c_cycles + 400LL*qc_cycles;
 
        for (months=0; days_in_month[months] <= remdays; months++)
                remdays -= days_in_month[months];
 
+       if (months >= 10) {
+               months -= 12;
+               years++;
+       }
+
        if (years+100 > INT_MAX || years+100 < INT_MIN)
                return -1;
 
        tm->tm_year = years + 100;
        tm->tm_mon = months + 2;
-       if (tm->tm_mon >= 12) {
-               tm->tm_mon -=12;
-               tm->tm_year++;
-       }
        tm->tm_mday = remdays + 1;
        tm->tm_wday = wday;
        tm->tm_yday = yday;