From: "Bartosz Dziewoński" <matma.rex@...>
Date: 2012-07-17T00:15:06+09:00
Subject: Re: rounding to nearest even: nio gem?

I'm not sure I understand what exactly do you want to do, or why would
you want to do that.

You could try dividing the number by two, rounding, and multiplying by
two again. This should give you the results you want.

irb(main):014:0> ( 8.5 /2).round(0)*2
=> 8
irb(main):015:0> ( 7.5 /2).round(0)*2
=> 8
irb(main):016:0> ( 1.0345 /2).round(3)*2
=> 1.034
irb(main):017:0> ( 1.0335 /2).round(3)*2
=> 1.034
irb(main):018:0> ( 1.0355 /2).round(3)*2
=> 1.036
irb(main):019:0> ( 1.0354 /2).round(3)*2
=> 1.036


-- Matma Rex