From: Bil Kleb <William.L.Kleb@...>
Date: 2003-03-29T05:09:20+09:00
Subject: scanf failing(?) for floats read from a file

I'm beginning to use scanf (thanks David, Hal, Noland, and Jason!) to
read some floats.

However, I am getting some bad data from it when using it to read
data from a file.

For example, simply varying the trailing spaces,

  require 'scanf'

  File.open 'temp', 'w' do |f|
   f.puts '0.0 1.23'
   f.puts '1.1 1.23 '
   f.puts '2.2 1.23  '
  end

  File.open 'temp' do |f|
   6.times{ puts f.scanf '%f' }
  end

produces,

  0.0
  1.23
  1.1
  0.23
  2.2
  23.0

Any ideas?  Am I supposed to be using something else?

This is for scanf 1.1.1 and ruby 1.7.2 (2002-05-29) and 1.6.8 (2003-03-26)
on i686-linux.

Thanks,
-- 
Bil Kleb
NASA Langley Research Center
Hampton, Virginia, USA