From: e@...
Date: 2014-04-15T00:31:20+00:00
Subject: [ruby-core:62032] [ruby-trunk - Bug #8358] TestSprintf#test_float	test failure

Issue #8358 has been updated by Zachary Scott.

Assignee changed from Zachary Scott to Nobuyoshi Nakada

@luis I was using assign as a reminder to check back on this ticket, when I have more time to review Anatol's response.

I think nobu will be able to decide about removing the SSE2 code. Admittedly it sucks that downstream package maintainers have to maintain separate configuration.

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Bug #8358: TestSprintf#test_float test failure
https://bugs.ruby-lang.org/issues/8358#change-46215

* Author: Heesob Park
* Status: Feedback
* Priority: Normal
* Assignee: Nobuyoshi Nakada
* Category: build
* Target version: current: 2.2.0
* ruby -v: ruby 2.1.0dev (2013-05-01) [i386-mingw32]
* Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN
----------------------------------------
I noticed TestSprintf#test_float
http://ci.rubyinstaller.org/job/ruby-trunk-x86-test-all/1287/console
  1) Failure:
TestSprintf#test_float [C:/Users/Worker/Jenkins/workspace/ruby-trunk-x86-build/test/ruby/test_sprintf.rb:193]:
[ruby-dev:42551].
<"0x1p+2"> expected but was
<"0x1p+1">.

This failure is due to r40404.

And Actually, this issue is almost same to bug #8299.
ruby_hdtoa function requires 53-bit precision 
but mingw32 compiler is 64-bit precision.

There are 2 possible workarounds.

1. adding  -msse2 -mfpmath=sse flag when compiling.
2. adding  _control87(_PC_53, _MCW_PC) when running.


---Files--------------------------------
0001-Properly-detect-platform-for-SSE2-instructions.patch (754 Bytes)


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