From: Dimitrij Denissenko <redmine@...>
Date: 2010-08-26T21:07:22+09:00
Subject: [ruby-core:31849] [Bug #3746] Incorrect Float subtraction

Bug #3746: Incorrect Float subtraction
http://redmine.ruby-lang.org/issues/show/3746

Author: Dimitrij Denissenko
Status: Open, Priority: High
ruby -v: ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-linux]

This is copied from IRB:

ruby-1.9.2-p0 > 2.0 - 1.0
 => 1.0 
ruby-1.9.2-p0 > 2.0 - 1.1
 => 0.8999999999999999 
ruby-1.9.2-p0 > 2.0 - 1.2
 => 0.8 
ruby-1.9.2-p0 > 2.0 - 1.3
 => 0.7 
ruby-1.9.2-p0 > 2.0 - 1.4
 => 0.6000000000000001 
ruby-1.9.2-p0 > 2.0 - 1.5
 => 0.5 
ruby-1.9.2-p0 > 2.0 - 1.6
 => 0.3999999999999999 
ruby-1.9.2-p0 > 2.0 - 1.7
 => 0.30000000000000004 
ruby-1.9.2-p0 > 2.0 - 1.8
 => 0.19999999999999996 
ruby-1.9.2-p0 > 2.0 - 1.9
 => 0.10000000000000009


----------------------------------------
http://redmine.ruby-lang.org