Add function toStartOfTenMinutes(). #4298
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| @@ -284,6 +284,15 @@ class DateLUTImpl | |||
| inline time_t toStartOfFiveMinute(time_t t) const { return t / 300 * 300; } | |||
| inline time_t toStartOfFifteenMinutes(time_t t) const { return t / 900 * 900; } | |||
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| inline time_t toStartOfTenMinutes(time_t t) const | |||
| { | |||
| if (offset_is_whole_number_of_hours_everytime) | |||
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It's guaranteed that the offset is divisable by 15 minutes for all time zones since some reasonable year.
You can avoid this check.
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The implementation looks inconsistent with two functions above.
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#4293