From: Daniel Finnie <danfinnie@...>
Date: 2006-12-04T11:27:14+09:00
Subject: Re: number format

You can use the number.round method, but this doesn't take a number of 
decimal places.

To round 1.234 to 1.23 use this code:
x = 1.234
x = x * 100 # -> 123.4
x = x.round -> 123
x = x / 100.0 => 1.23

At least, that's the best method I can find from the Ruby docs...

Dan

Li Chen wrote:
> Hi all,
> 
> I have a number, for example, 1.123456789. What is the Ruby way to
> change it into whatever number of floating points such as 1.12,
> 1.123,1.1234568 or 1.12345679.
> 
> Thanks,
> 
> Li
>