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LibC: Minor style tweaks to tm_to_time

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Nico Weber 2020-08-25 20:25:50 -04:00 committed by Andreas Kling
parent 2236385e1f
commit b9cbb4fd00
Notes: sideshowbarker 2024-07-19 03:08:20 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/b9cbb4fd008
Pull-request: https://github.com/SerenityOS/serenity/pull/3307
1 changed files with 5 additions and 8 deletions
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13
Libraries/LibC/time.cpp
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@ -74,16 +74,16 @@ static void time_to_tm(struct tm* tm, time_t t)
t -= days_in_year(year) * __seconds_per_day;
for (; t < 0; --year)
t += days_in_year(year - 1) * __seconds_per_day;
ASSERT(t >= 0);
tm->tm_year = year - 1900;
ASSERT(t >= 0);
int days = t / __seconds_per_day;
tm->tm_yday = days;
int remaining = t % __seconds_per_day;
tm->tm_sec = remaining % 60;
remaining /= 60;
tm->tm_min = remaining % 60;
tm->tm_hour = remaining / 60;
tm->tm_year = year - 1900;
tm->tm_yday = days;
int month;
for (month = 1; month < 12 && days >= days_in_month(year, month); ++month)
@ -112,12 +112,9 @@ static time_t tm_to_time(struct tm* tm, long timezone_adjust_seconds)
tm->tm_mon += 12;
}
int days = years_to_days_since_epoch(1900 + tm->tm_year);
tm->tm_yday = day_of_year(1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday);
days += tm->tm_yday;
int seconds = tm->tm_hour * 3600 + tm->tm_min * 60 + tm->tm_sec;
auto timestamp = static_cast<time_t>(days) * __seconds_per_day + seconds + timezone_adjust_seconds;
time_t days_since_epoch = years_to_days_since_epoch(1900 + tm->tm_year) + tm->tm_yday;
auto timestamp = ((days_since_epoch * 24 + tm->tm_hour) * 60 + tm->tm_min) * 60 + tm->tm_sec + timezone_adjust_seconds;
time_to_tm(tm, timestamp);
return timestamp;
}