Bug #8358

Updated by Nobuyoshi Nakada 12 months ago

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.

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