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ICU-8753 Fix comment about prevOffset / newOffset

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X-SVN-Rev: 30773
This commit is contained in:
Peter Edberg 2011-09-30 21:34:41 +00:00
parent 69bb199a1b
commit ab3d24b4f5
1 changed files with 6 additions and 6 deletions
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12
icu4c/source/i18n/calendar.cpp
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@ -1900,9 +1900,9 @@ void Calendar::add(UCalendarDateFields field, int32_t amount, UErrorCode& status
}
// In order to keep the hour invariant (for fields where this is
// appropriate), record the DST_OFFSET before and after the add()
// operation. If it has changed, then adjust the millis to
// compensate.
// appropriate), check the combined DST & ZONE offset before and
// after the add() operation. If it changes, then adjust the millis
// to compensate.
int32_t prevOffset = 0;
int32_t hour = 0;
if (keepHourInvariant) {
@ -1916,10 +1916,10 @@ void Calendar::add(UCalendarDateFields field, int32_t amount, UErrorCode& status
int32_t newOffset = get(UCAL_DST_OFFSET, status) + get(UCAL_ZONE_OFFSET, status);
if (newOffset != prevOffset) {
// We have done an hour-invariant adjustment but the
// DST offset has altered. We adjust millis to keep
// the hour constant. In cases such as midnight after
// combined offset has changed. We adjust millis to keep
// the hour constant. In cases such as midnight after
// a DST change which occurs at midnight, there is the
// danger of adjusting into a different day. To avoid
// danger of adjusting into a different day. To avoid
// this we make the adjustment only if it actually
// maintains the hour.
double t = internalGetTime();