From: Thomas Lundqvist <thomasl@...>
Date: 2001-05-01T07:10:03+09:00
Subject: [ruby-talk:14457] Re: gtk and Float/to_f

On Mon, 30 Apr 2001, Yukihiro Matsumoto wrote:

> Hi,
> 
> In message "[ruby-talk:14339] gtk and Float/to_f"
>     on 01/04/28, Thomas Lundqvist <thomasl@ce.chalmers.se> writes:
> 
> |Hi! I experience the following strange behavior:
> |
> |> ruby -e 'puts "5.3".to_f + 1.0'
> |6.3
> |
> |> ruby -e 'require "gtk"; puts "5.3".to_f + 1.0'
> |6.0
> 
> Weird.  Platform information, please?
> Nothing changes on ruby 1.6.3 (2001-03-28) [i386-linux].
> 
> 							matz.

Ok! I solved it! I live in Sweden.

Gtk uses setlocale and changes the numeric format to 5,3 instead
of 5.3. For example:

 > setenv LANG sv_SE
 > ruby -e 'require "gtk"; puts "5.3".to_f + 1.0'
 6.0

 > setenv LANG C
 > ruby -e 'require "gtk"; puts "5.3".to_f + 1.0'
 6.3

But a better solution is:

 > setenv LANG sv_SE
 > setenv LC_NUMERIC C
 > ruby -e 'require "gtk"; puts "5.3".to_f + 1.0'
 6.3

I don't like it when basic libc-functions (strtod) is changed by
the locale. I want my programs to work in other countries as
well. The function strtod should really come in two flavours. One
depending on the locale and one not depending...

Regards,
Thomas

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Thomas Lundqvist, Ph.D. Student    thomasl@ce.chalmers.se
Dept. of Computer Engineering      http://www.ce.chalmers.se/~thomasl/
Chalmers University of Technology
SE-412 96 Gothenburg               Phone: +46 31 772 1165
SWEDEN                             Fax:   +46 31 772 3663
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