[#31647] [Backport #3666] Backport of r26311 (Bug #2587) — Luis Lavena <redmine@...>

Backport #3666: Backport of r26311 (Bug #2587)

13 messages 2010/08/07

[#31666] [Bug #3677] unable to run certain gem binaries' in windows 7 — Roger Pack <redmine@...>

Bug #3677: unable to run certain gem binaries' in windows 7

10 messages 2010/08/10

[#31676] [Backport #3680] Splatting calls to_ary instead of to_a in some cases — Tomas Matousek <redmine@...>

Backport #3680: Splatting calls to_ary instead of to_a in some cases

10 messages 2010/08/11

[#31681] [Bug #3683] getgrnam on computer with NIS group (+)? — Rocky Bernstein <redmine@...>

Bug #3683: getgrnam on computer with NIS group (+)?

13 messages 2010/08/11

[#31843] Garbage Collection Question — Asher <asher@...>

This question is no doubt a function of my own lack of understanding, =

17 messages 2010/08/25
[#31861] Re: Garbage Collection Question — Roger Pack <rogerdpack2@...> 2010/08/26

> The question in short: when an object goes out of scope and has no

[#31862] Re: Garbage Collection Question — Asher <asher@...> 2010/08/26

Right - so how does a pointer ever get off the stack?

[#31873] Re: Garbage Collection Question — Kurt Stephens <ks@...> 2010/08/27

On 8/26/10 11:51 AM, Asher wrote:

[#31894] Re: Garbage Collection Question — Asher <asher@...> 2010/08/27

I very much appreciate the response, and this is helpful in describing =

[#31885] Avoiding $LOAD_PATH pollution — Eric Hodel <drbrain@...7.net>

Last year Nobu asked me to propose an API for adding an object to

21 messages 2010/08/27

[#31947] not use system for default encoding — Roger Pack <rogerdpack2@...>

It strikes me as a bit "scary" to use system locale settings to

19 messages 2010/08/30

[#31971] Change Ruby's License to BSDL + Ruby's dual license — "NARUSE, Yui" <naruse@...>

Ruby's License will change to BSDL + Ruby's dual license

16 messages 2010/08/31

[ruby-core:31672] [Bug #3678] CMath.sqrt(1.i) results to 0.0+0.0i

From: Heesob Park <redmine@...>
Date: 2010-08-11 02:44:10 UTC
List: ruby-core #31672
Bug #3678: CMath.sqrt(1.i) results to 0.0+0.0i
http://redmine.ruby-lang.org/issues/show/3678

Author: Heesob Park
Status: Open, Priority: Normal
Category: lib, Target version: 1.9.x
ruby -v: ruby 1.9.3dev (2010-08-10 trunk 28955) [i386-mswin32_90]

CMath.sqrt(1.i) should be equal to CMath.sqrt(1.0.i)

But CMath.sqrt(1.i) gives wrong result.

C:\>ruby -rcmath -e "p CMath.sqrt(1.i)"
(0.0+0.0i)

C:\>ruby -rcmath -e "p CMath.sqrt(1.0.i)"
(0.7071067811865476+0.7071067811865476i)

Here is the patch
--- cmath.rb    2010-08-11 11:30:07.087219552 +0900
+++ cmath.rb.new        2010-08-11 11:31:14.647214876 +0900
@@ -79,7 +79,7 @@
       else
        r = z.abs
        x = z.real
-       Complex(sqrt!((r + x) / 2), sqrt!((r - x) / 2))
+       Complex(sqrt!((r + x) / 2.0), sqrt!((r - x) / 2.0))
       end
     end
   end


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