From: DaVinci <bombadil@...>
Date: 2001-08-29T23:01:36+09:00
Subject: [ruby-talk:20524] Problem with float numbers

 Hello.

 I have found a rare problem with float numbers. It only raises when I use
 Gtk extension (or so I think).

 I have made tests with irb:

	> puts 2.6 * 2
	5.2
	nil
	>

 That's ok.

 But now try to execute next example:

----------------------------------------------------
#!/usr/bin/ruby

require 'gtk'

class Main
	def initialize
		@win = Gtk::Window.new
		@win.signal_connect('destroy') do
			Gtk::main_quit
		end
		
		@cont = Gtk::VBox.new(false, 5)
		@win.add(@cont)

		@caja = Gtk::HBox.new
		@cont.pack_end(@caja)
		boton1 = Gtk::Button.new('Hello')
		@caja.pack_start(boton1)
		boton1.signal_connect("clicked") do puts 2.6 * 2 end
		@win.show_all
	end
end

Main.new

Gtk.main
------------------------------------------

 output when you click button is:

 	5,6.0

 !!!!!!!!!!!

 What is the problem? I have found other float/gtk related problems with
 more complex code (It is boring to reproduce here). Same line poduces in
 that case a result of:

 	4.0

 like if it was an integer product (!!!!!!!!).

 Is this a float bug?...

 Thanks.

 				David