From: Hassan Schroeder <hassan.schroeder@...>
Date: 2012-12-10T01:54:38+09:00
Subject: Re: Conditional Loop question

On Sun, Dec 9, 2012 at 8:11 AM, Ivan S. <lists@ruby-forum.com> wrote:

> can someone explain the behaviour of this simple loop that doesnt stop
> in 1.13.
>
>>> x =1.12
> => 1.12
>>> loop do
> ?> x=x+0.01
>>> break if (x==1.13 || x > 1.19)

1.9.3 (main):0 > 1.13 == 1.13
=> true
1.9.3 (main):0 > 1.13 == (1.12 + 0.01)
=> false
1.9.3 (main):0 > 1.12 + 0.01
=> 1.1300000000000001
1.9.3 (main):0 > BigDecimal.new("1.13") == ( BigDecimal.new("1.12") +
BigDecimal("0.01") )
=> true

Floating Point strikes again :-)

-- 
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
http://about.me/hassanschroeder
twitter: @hassan