Round, With Tie Breakers, Round Two - Cleve Moler on Mathematics and Computing

[poster]

I published Round, With Ties to Even a couple of days ago. Steve Eddins and Daniel Dolan immediately had substantive comments. Here is my reaction to their comments.

ContentsTwo MoreSampleScalingroundTwo MoreThe four choices that I described for how to break ties -- 'even', 'odd', 'up' and 'down' -- all have the same behavior for positive and negative numbers. The current built-in round uses the 'up" rule.

Steve sees the need for two more choices that are sensitive to the sign of the number. I will call them 'plus' and 'minus". They round to the right and to the left on the number line. That's sometimes known as round toward



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