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Ah, this was very helpful, thanks. Not being too clever in these matters, I didn't quite understand the above, but it got me close enough to experiment successfully (though I don't quite get the second bullet item). In my case I was after an offset to add to a unixtime, so that's how the code is oriented.
for (my $i = 0; $i < 60; $i++) { my $offset = getOffsetToNearestInterval($i,15); print "$i: " . ($i + $offset) . ' (' . $offset . ')' . "\n"; } sub getOffsetToNearestInterval { my $number = shift; my $interval = shift; my $nearest_interval = ( $interval * int( ($number + ($interval/2) + ) / $interval) ); my $offset_to_interval = $nearest_interval - $number; return $offset_to_interval; }
Hope this helps the next guy stumbling on this thread.

In reply to Re^4: Round time to nearest 15 or 30 minutes by bill_mcgonigle
in thread Round time to nearest 15 or 30 minutes by jesuashok

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