[ruby-dev:28800] Re: rational 1.08

ねばたです。遅れてすみません。
自分宛てだと気付くのが、遅かった。。。

ruby 1.8.4 (2005-12-24) [i386-mswin32]

irb(main):001:0>
irb(main):002:0* require 'rational'
=> true
irb(main):003:0>
irb(main):004:0* fn = 0
=> 0
irb(main):005:0> p [fn.size, fn.class]
[4, Fixnum]
=> nil
irb(main):006:0> bn = (2**(fn.size*8)-1)
=> 4294967295
irb(main):007:0> p [bn.size, bn.class]
[4, Bignum]
=> nil
irb(main):008:0> r = bn.to_r
=> Rational(4294967295, 1)
irb(main):009:0> p r
Rational(4294967295, 1)
=> nil
irb(main):010:0> f = r.to_f
=> 4294967295.0
irb(main):011:0> p f
4294967295.0
=> nil
irb(main):012:0>


ruby 1.9.0 (2006-05-26) [i386-bccwin32]

C:\ruby19_060526\usr\bin>irb -Ks
irb(main):001:0>
irb(main):002:0* require 'rational'
=> true
irb(main):003:0>
irb(main):004:0* fn = 0
=> 0
irb(main):005:0> p [fn.size, fn.class]
[4, Fixnum]
=> nil
irb(main):006:0> bn = (2**(fn.size*8)-1)
=> 4294967295
irb(main):007:0> p [bn.size, bn.class]
[4, Bignum]
=> nil
irb(main):008:0> r = bn.to_r
=> Rational(4294967295, 1)
irb(main):009:0> p r
Rational(4294967295, 1)
=> nil
irb(main):010:0> f = r.to_f
=> 4294967295.0
irb(main):011:0> p f
4294967295.0
=> nil
irb(main):012:0>

 ruby 1.9.0 (2006-05-13) [i386-bccwin32]　は、
整理してどっかに行ってしまいました。




> ふなばです。
> 
> > ruby 1.8.4 (2005-12-24) [i386-mswin32]
> > ruby 1.9.0 (2006-05-13) [i386-bccwin32]
> 
> この環境での
> 
> require 'rational'
> 
> fn = 0
> p [fn.size, fn.class]
> bn = (2**(fn.size*8)-1)
> p [bn.size, bn.class]
> r = bn.to_r
> p r
> f = r.to_f
> p f
> 
> の実行結果を見せてもらえますか?