ruby-dev

[#47311] Announce take over the release manager of Ruby 2.1.0 — "NARUSE, Yui" <naruse@...>

I, Naruse, take over the release manager of Ruby 2.1.0 from mame.

1 message 2013/05/01

[#47312] [ruby-trunk - Feature #8354][Open] lib/cgi/util.rb を関数としても使えるようにしたい — "xibbar (Takeyuki FUJIOKA)" <xibbar@...>

4 messages 2013/05/01

[#47314] [ruby-trunk - Feature #8354] lib/cgi/util.rb を関数としても使えるようにしたい — "mame (Yusuke Endoh)" <mame@...> 2013/05/02

[#47316] [ruby-trunk - Feature #8354] lib/cgi/util.rb を関数としても使えるようにしたい — "mame (Yusuke Endoh)" <mame@...> 2013/05/03

[#47315] [ruby-trunk - Feature #8354] lib/cgi/util.rb を関数としても使えるようにしたい — "xibbar (Takeyuki FUJIOKA)" <xibbar@...> 2013/05/02

[#47313] [Backport 200 - Backport #8360][Assigned] backport r39939 (fix SEGV when Thread#join timeout argument == Float::INFINITY) — "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>

1 message 2013/05/02

[#47317] cgiのセッションに使うファイル名の改良 — fujioka <fuj@...>

xibbarこと藤岡です。

4 messages 2013/05/03

[#47318] Re: cgiのセッションに使うファイル名の改良 — "NARUSE, Yui" <naruse@...> 2013/05/03

(2013/05/03 21:19), fujioka wrote:

[#47321] Re: cgiのセッションに使うファイル名の改良 — fujioka <fuj@...> 2013/05/04

藤岡です。

[#47322] Re: cgiのセッションに使うファイル名の改良 — "NARUSE, Yui" <naruse@...> 2013/05/04

(2013/05/04 21:25), fujioka wrote:

[#47319] Translating MRI Guides! — Zachary Scott <zachary@...>

Hello Hashimoto-san!

5 messages 2013/05/03

[#47320] Re: Translating MRI Guides! — Sho Hashimoto <sho-h@...> 2013/05/04

> Hello Hashimoto-san!

[#47323] Re: Translating MRI Guides! — Zachary Scott <zachary@...> 2013/05/04

Great! Let me know if you have any questions on the English docs.

[#47354] Re: Translating MRI Guides! — Sho Hashimoto <sho-h@...> 2013/05/18

Sorry to return mail was late.

[#47355] Re: Translating MRI Guides! — Zachary Scott <zachary@...> 2013/05/18

Not a problem! I will actually be in Japan during that time, so maybe

[#47325] [ruby-trunk - Bug #8378][Open] json/generator/generator.c: warning: array subscript has type 'char' — "akr (Akira Tanaka)" <akr@...>

1 message 2013/05/07

[#47327] [ruby-trunk - Bug #8379][Open] json dependency problem — "akr (Akira Tanaka)" <akr@...>

1 message 2013/05/07

[#47328] [Backport 200 - Backport #8380][Assigned] backport r40208 (refactor overflow check of integer multiplication) — "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>

3 messages 2013/05/07

[#47332] [Backport 200 - Backport #8380] backport r40208 (refactor overflow check of integer multiplication) — "znz (Kazuhiro NISHIYAMA)" <redmine@...> 2013/05/08

[#47334] [Backport 200 - Backport #8380] backport r40208 (refactor overflow check of integer multiplication) — "nagachika (Tomoyuki Chikanaga)" <nagachika00@...> 2013/05/08

[#47336] [ruby-trunk - Feature #8394][Open] use String#b instead of dup.force_encoding("ASCII-8BIT") — "znz (Kazuhiro NISHIYAMA)" <redmine@...>

3 messages 2013/05/12

[#47339] [ruby-trunk - Feature #8394][Assigned] use String#b instead of dup.force_encoding("ASCII-8BIT") — "xibbar (Takeyuki FUJIOKA)" <xibbar@...> 2013/05/12

[#47350] [ruby-trunk - Feature #8394][Assigned] use String#b instead of dup.force_encoding("ASCII-8BIT") — "xibbar (Takeyuki FUJIOKA)" <xibbar@...> 2013/05/16

[#47337] Re: [ruby-changes:28606] kosaki:r40658 (trunk): * configure.in: move clock_gettime() check into regular place. — Tanaka Akira <akr@...>

2013/5/12 kosaki <ko1@atdot.net>:

1 message 2013/05/12

[#47338] [ruby-trunk - Bug #8397][Open] TestBignum#test_interrupt_during_bigdivrem failure — "akr (Akira Tanaka)" <akr@...>

1 message 2013/05/12

[#47340] [ruby-trunk - Bug #8401][Open] BigDecimal.new("2").power(1e20) is zero. — "akr (Akira Tanaka)" <akr@...>

4 messages 2013/05/13

[#47342] [ruby-trunk - Bug #8401] BigDecimal.new("2").power(1e20) is zero. — "mrkn (Kenta Murata)" <muraken@...> 2013/05/14

[#47343] Re: [ruby-trunk - Bug #8401] BigDecimal.new("2").power(1e20) is zero. — Tanaka Akira <akr@...> 2013/05/14

2013/5/14 mrkn (Kenta Murata) <muraken@gmail.com>:

[#47826] [ruby-trunk - Bug #8401][Closed] BigDecimal.new("2").power(1e20) is zero. — "mrkn (Kenta Murata)" <muraken@...> 2013/11/29

[#47341] LONG_LONG availability — Tanaka Akira <akr@...>

気がついてしまったのですが、Ruby 1.9.2 のころから

7 messages 2013/05/13

[#47345] Re: LONG_LONG availability — Tanaka Akira <akr@...> 2013/05/15

2013年5月14日 8:00 Tanaka Akira <akr@fsij.org>:

[#47346] Re: LONG_LONG availability — "NARUSE, Yui" <naruse@...> 2013/05/15

「Rubyソースコードの仮定事項」に追加してしまいますかねぇ

[#47348] Re: LONG_LONG availability — Zachary Scott <zachary@...> 2013/05/15

Sorry to go off-topic, but is there an English translation for the

[#47349] Re: LONG_LONG availability — "NARUSE, Yui" <naruse@...> 2013/05/15

It is still valid but there's no English version.

[#47358] Re: LONG_LONG availability — Kenta Murata <muraken@...> 2013/05/20

むらたです。

[#47359] Re: LONG_LONG availability — Tanaka Akira <akr@...> 2013/05/20

2013年5月20日 10:15 Kenta Murata <muraken@gmail.com>:

[#47344] Re: [ruby-changes:28691] usa:r40743 (trunk): * signal.c: need to include unistd.h for write(2). — Tanaka Akira <akr@...>

2013/5/15 usa <ko1@atdot.net>:

2 messages 2013/05/14

[#47347] Re: [ruby-changes:28691] usa:r40743 (trunk): * signal.c: need to include unistd.h for write(2). — "U.Nakamura" <usa@...> 2013/05/15

こんにちは、なかむら(う)です。

[#47351] [Backport 200 - Backport #8413][Assigned] backport r40783 (partially, fix a typo of win32/Makefile.sub, variable name embeded into config.status). — "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>

1 message 2013/05/16

[#47352] [ruby-trunk - Feature #8414][Assigned] String#scrub! — "naruse (Yui NARUSE)" <naruse@...>

2 messages 2013/05/17

[#47353] [ruby-trunk - Feature #8414] String#scrub! — "matz (Yukihiro Matsumoto)" <matz@...> 2013/05/17

[#47356] [Backport 200 - Backport #8424][Assigned] backport r40806 (fix infinite loop when stack overflow with TH_PUSH_TAG()) — "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>

1 message 2013/05/18

[#47361] Fwd: [ruby-list:49349] [ANN] 6/2(日)に開催するRubyHirobaの参加を受け付けています＆LT出演者、ブース出展者を募集します — SASADA Koichi <ko1@...>

ささだです。

2 messages 2013/05/22

[#47362] Re: [ruby-dev:47361] Fwd: [ruby-list:49349] [ANN] 6/2(日)に開催するRubyHirobaの参加を受け付けています＆LT出演者、ブース出展者を募集します — "Martin J. Dürst" <duerst@...> 2013/05/22

On 2013/05/22 17:59, SASADA Koichi wrote:

[#47363] -Lprefix/lib — Tanaka Akira <akr@...>

最近試しているクロスコンパイルな CI で、

5 messages 2013/05/22

[#47365] Re: -Lprefix/lib — Nobuyoshi Nakada <nobu@...> 2013/05/24

なかだです。

[#47367] Re: -Lprefix/lib — Tanaka Akira <akr@...> 2013/05/24

2013年5月24日 10:39 Nobuyoshi Nakada <nobu@ruby-lang.org>:

[#47368] Re: -Lprefix/lib — Tanaka Akira <akr@...> 2013/05/24

2013年5月24日 15:55 Tanaka Akira <akr@fsij.org>:

[#47370] Re: -Lprefix/lib — Tanaka Akira <akr@...> 2013/05/25

2013年5月24日 16:06 Tanaka Akira <akr@fsij.org>:

[#47364] [Backport 200 - Backport #8440][Assigned] backport r40900 (fix invalid read by index underflow.) — "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>

2 messages 2013/05/23

[#47398] [Backport 200 - Backport #8440] backport r40900 (fix invalid read by index underflow.) — "nagachika (Tomoyuki Chikanaga)" <nagachika00@...> 2013/06/04

[#47366] [ruby-trunk - Bug #8443][Assigned] -Lprefix/lib — "nobu (Nobuyoshi Nakada)" <nobu@...>

1 message 2013/05/24

[#47369] [ruby-trunk - Bug #8445][Open] IO.open and IO#set_enconding does not support :fallback option — "pjmtdw (Haruhiro Yoshimoto)" <pjmtdw@...>

3 messages 2013/05/24

[#47373] [ruby-trunk - Bug #8445][Assigned] IO.open and IO#set_enconding does not support :fallback option — "naruse (Yui NARUSE)" <naruse@...> 2013/05/25

[#47934] [ruby-trunk - Bug #8445] IO.open and IO#set_enconding does not support :fallback option — shibata.hiroshi@... 2014/01/30

Issue #8445 has been updated by Hiroshi SHIBATA.

[#47371] [Backport 200 - Backport #8450][Assigned] backport r40920 (string.c (rb_str_quote_unprintable): check if argument is a string.) — "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>

1 message 2013/05/25

[#47372] [Backport 200 - Backport #8451][Assigned] backport r40925 (bug fix of File.fnmatch with multi-byte character in bracket) — "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>

1 message 2013/05/25

[#47374] Re: [ruby-cvs:48158] xibbar:r40990 (trunk): fix a typo. — Zachary Scott <zachary@...>

Do you mean "modularized"?

3 messages 2013/05/30

[#47375] Re: [ruby-cvs:48158] xibbar:r40990 (trunk): fix a typo. — xibbar <xibbar@...> 2013/05/30

It means from Class to Module.

[#47376] Re: [ruby-cvs:48158] xibbar:r40990 (trunk): fix a typo. — Zachary Scott <zachary@...> 2013/05/30

You are correct for some reason I didn't thin hat was a word haha

[#47377] RubyKaigi 2013, 5/31(金)の'Ruby Comitter vs. the World'企画へのご協力のお願い — Kakutani Shintaro <shintaro@...>

かくたにです。RubyKaigi 2013 のほうから来ました。

5 messages 2013/05/30

[#47380] Re: RubyKaigi 2013, 5/31(金)の'Ruby Comitter vs. the World'企画へのご協力のお願い — Nobuyoshi Nakada <nobu@...> 2013/05/31

(13/05/31 1:30), Kakutani Shintaro wrote:

[#47381] Re: RubyKaigi 2013, 5/31(金)の'Ruby Comitter vs. the World'企画へのご協力のお願い — Urabe Shyouhei <shyouhei@...> 2013/05/31

On 05/31/2013 10:30 AM, Nobuyoshi Nakada wrote:

[#47378] Re: RubyKaigi 2013, 5/31(金)の'Ruby Comitter vs. the World'企画へのご協力のお願い — "Shota Fukumori (sora_h)" <sorah@...> 2013/05/30

そらはです。

[#47379] RubyKaigi 2013, 5/31(金)の'Ruby Comitter vs. the World'企画へのご協力のお願い — xibbar <xibbar@...> 2013/05/31

拉致で。

[#47382] Re: Welcome to our (ruby developers list) You are added automatically — osamu.takayasu@...

# help

1 message 2013/05/31

[ruby-dev:47342] [ruby-trunk - Bug #8401] BigDecimal.new("2").power(1e20) is zero.

From: "mrkn (Kenta Murata)" <muraken@...>

Date: 2013-05-14 00:13:02 UTC

List: ruby-dev #47342

Issue #8401 has been updated by mrkn (Kenta Murata).

Category set to ext
Assignee set to mrkn (Kenta Murata)

1.9.3p392 では -Infinity になるから、2.0.0p0 で導入されたバグですねぇ。
----------------------------------------
Bug #8401: BigDecimal.new("2").power(1e20) is zero.
https://bugs.ruby-lang.org/issues/8401#change-39315

Author: akr (Akira Tanaka)
Status: Open
Priority: Normal
Assignee: mrkn (Kenta Murata)
Category: ext
Target version: 
ruby -v: ruby 2.1.0dev (2013-05-13 trunk 40697) [x86_64-linux]
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


ふと見つけたのですが、BigDecimal.new("2").power(1e20) が 0.0 になります。

% ./ruby -v -rbigdecimal -e 'puts BigDecimal.new("2").power(1e20)'
ruby 2.1.0dev (2013-05-13 trunk 40697) [x86_64-linux]
0.0

以下のように、power の引数が
1e1 や 1e2 なら値が出てきて、
1e10 ならエラーになるのに、
1e20 になるとまたエラーじゃなくなって 0.0 になっちゃうのは
変ではないでしょうか。

% ./ruby -rbigdecimal -e 'puts BigDecimal.new("2").power(1e1)' 
0.1024E4
% ./ruby -rbigdecimal -e 'puts BigDecimal.new("2").power(1e2)'
0.1267650600228229401496703205376E31
% ./ruby -rbigdecimal -e 'puts BigDecimal.new("2").power(1e10)'
-e:1:in `power': integer 10000000000 too big to convert to `int' (RangeError)
	from -e:1:in `<main>'




-- 
http://bugs.ruby-lang.org/

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