From: Martin Coxall <pseudo.meta@...>
Date: 2006-10-14T00:38:11+09:00
Subject: Re: How do I round off a float to x decimal places

> Hi,
>
> This might be a very naive question but I looked through ruby:Float
> documentation for a method which round off's a float number to x decimal
> places with no luck.
>
> Please share if you know.

It rather depends on which of the 14-or-so regulalrly used rounding
algorithms you need.

Float#round has an inbuilt bias toward zero and is therefore not a
useful unbiased rounding in many circumstances.

Martin