From: Konstantin Shabanov <redmine@...>
Date: 2010-09-04T01:33:33+09:00
Subject: [ruby-core:32042] [Ruby 1.9-Bug#3785][Open] unexpected Numeric#step behaviour

Bug #3785: unexpected Numeric#step behaviour
http://redmine.ruby-lang.org/issues/show/3785

Author: Konstantin Shabanov
Status: Open, Priority: Normal
Category: core, Target version: 1.9.2
ruby -v: ruby-1.9.2-head 

ruby-1.9.2-head > -0.5.step(0.5, 0.1) { |x| puts x }
-0.5
-0.4
-0.3
-0.19999999999999996
-0.09999999999999998
0.0
0.10000000000000009
0.20000000000000007
0.30000000000000004
0.4
0.5
 => -0.5 
-------------------------------------------------
The same with 1.9.2-p0, but with 1.9.1-p429 and 1.8.7-p302:
-------------------------------------------------
ruby-1.8.7-p302 > -0.5.step(0.5, 0.1) { |x| puts x }
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
 => -0.5 
-------------------------------------------------


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