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AK+LibC+LibCore: Add a days_in_year function

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Nico Weber 2020-08-25 20:17:19 -04:00 • committed by Andreas Kling
parent a7a18b478e
commit 2236385e1f
3 changed files with 13 additions and 8 deletions
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8
Libraries/LibC/time.cpp
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@ -70,10 +70,10 @@ static void time_to_tm(struct tm* tm, time_t t)
tm->tm_wday /= __seconds_per_day;
int year = 1970;
for (; t >= (365 + is_leap_year(year)) * __seconds_per_day; ++year)
t -= (365 + is_leap_year(year)) * __seconds_per_day;
for (; t >= days_in_year(year) * __seconds_per_day; ++year)
t -= days_in_year(year) * __seconds_per_day;
for (; t < 0; --year)
t += (365 + is_leap_year(year - 1)) * __seconds_per_day;
t += days_in_year(year - 1) * __seconds_per_day;
ASSERT(t >= 0);
int days = t / __seconds_per_day;
@ -275,7 +275,7 @@ size_t strftime(char* destination, size_t max_size, const char* format, const st
if (tm->tm_yday >= 7 - wday_of_year_beginning)
--week_number;
else {
const int days_of_last_year = 365 + is_leap_year(tm->tm_year + 1900 - 1);
const int days_of_last_year = days_in_year(tm->tm_year + 1900 - 1);
const int wday_of_last_year_beginning = (wday_of_year_beginning + 6 * days_of_last_year) % 7;
week_number = (days_of_last_year + wday_of_last_year_beginning) / 7 + 1;
if (wday_of_last_year_beginning > 3)