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fixed GH #560: DateTime class calculates a wrong day

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This commit is contained in:
Günter Obiltschnig
2014-11-19 12:42:46 +01:00
parent 4c11857056
commit e76f475da2
1 changed files with 32 additions and 1 deletions
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33
Foundation/src/DateTime.cpp
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@@ -392,7 +392,38 @@ void DateTime::computeGregorian(double julianDay)
void DateTime::computeDaytime()
{
Timespan span(_utcTime/10);
_hour = span.hours();
int hour = span.hours();
// Due to double rounding issues, the previous call to computeGregorian()
// may have crossed into the next or previous day. We need to correct that.
if (hour == 23 && _hour == 0)
{
_day--;
if (_day == 0)
{
_month--;
if (_month == 0)
{
_month = 12;
_year--;
}
_day = daysOfMonth(_year, _month);
}
}
else if (hour == 0 && _hour == 23)
{
_day++;
if (_day > daysOfMonth(_year, _month))
{
_month++;
if (_month > 12)
{
_month = 1;
_year++;
}
_day = 1;
}
}
_hour = hour;
_minute = span.minutes();
_second = span.seconds();
_millisecond = span.milliseconds();