[#44925] [Backport93 - Backport #5702][Open] backport r33935 — Yusuke Endoh <mame@...>

19 messages 2011/12/03
[#44929] [Backport93 - Backport #5702] backport r33935 — Tomoyuki Chikanaga <nagachika00@...> 2011/12/05

[#44931] Re: [Backport93 - Backport #5702] backport r33935 — Yusuke Endoh <mame@...> 2011/12/05

遠藤です。

[#44940] Re: [ruby-cvs:41134] naruse:r33956 (trunk): Comment out tests which fails with GDBM-DBM compat mode. — Tanaka Akira <akr@...>

2011/12/6 <naruse@ruby-lang.org>:

9 messages 2011/12/05
[#44941] Re: [ruby-cvs:41134] naruse:r33956 (trunk): Comment out tests which fails with GDBM-DBM compat mode. — KOSAKI Motohiro <kosaki.motohiro@...> 2011/12/05

2011年12月5日16:56 Tanaka Akira <akr@fsij.org>:

[#44942] Re: [ruby-cvs:41134] naruse:r33956 (trunk): Comment out tests which fails with GDBM-DBM compat mode. — KOSAKI Motohiro <kosaki.motohiro@...> 2011/12/05

> おかしいな。gdbmは勝手にcreateフラグを立ててしまうので当該2つの

[#44985] [ruby-trunk - Bug #5757][Open] main threadがreadやselectで待っていると、^C でなかなか死なない — Yui NARUSE <naruse@...>

12 messages 2011/12/13

[#45021] [ruby-trunk - Bug #5786][Open] LoadError: cannot load such file -- openssl — Kazuhiro NISHIYAMA <redmine@...>

11 messages 2011/12/21

[#45057] [ruby-trunk - Feature #5820][Assigned] Merge Onigmo to Ruby 2.0 — Yui NARUSE <naruse@...>

21 messages 2011/12/28

[ruby-dev:44919] [ruby-trunk - Bug #5699] Windowsで一部のFloat値が正しく扱えない

From: "ujihisa ." <example@...>
Date: 2011-12-02 00:17:41 UTC
List: ruby-dev #44919
Issue #5699 has been updated by ujihisa ..


浮動小数点数の計算には誤差があります。参考サイト:

* http://download.oracle.com/docs/cd/E19957-01/806-4847/ncg_goldberg.html
* http://wiki.github.com/rdp/ruby_tutorials_core/ruby-talk-faq#floats_imprecise
* http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems
----------------------------------------
Bug #5699: Windowsで一部のFloat値が正しく扱えない
http://redmine.ruby-lang.org/issues/5699

Author: 剛 奥山
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 1.9.2
ruby -v: ruby 1.9.2p290 (2011-07-09) [i386-mingw32]


Windows XP SP3にて、

ruby 1.9.2p290 (2011-07-09) [i386-mingw32] で、
  x = 0.002877 #=> 0.0028770000000000002
となってしまいます。

ruby 1.8.7 (2011-06-30 patchlevel 352) [i386-mingw32] では、
  x = 0.002877 #=> 0.002877
となります。




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