[Mono-dev] System.MathTest.TestIEEERemainder fails
nataraj.ramaswamy at wipro.com
nataraj.ramaswamy at wipro.com
Tue Jun 10 07:22:45 EDT 2008
Thanks for the immediate response. It would be really helpful if there
are any links/references to recent test results for Sparc (version 1.9).
Or in other words, is there a possibility to know the list of test
failures, known issues on Sparc.
Thanks & regards,
From: Zoltan Varga [mailto:vargaz at gmail.com]
Sent: Tuesday, June 10, 2008 4:20 PM
To: Nataraj Ramaswamy (WT01 - Computing, Storage & Software Products)
Cc: mono-devel-list at lists.ximian.com
Subject: Re: [Mono-dev] System.MathTest.TestIEEERemainder fails
This is now fixed in SVN using your suggestion. Btw, some of our tests
do fail on sparc, this is not a problem for most applications tough.
2008/6/10 <nataraj.ramaswamy at wipro.com>:
> We have been able to successfully build Mono on Solaris 7 sparc (32
> When we tried to execute the Class Library test suites, some of the
> test cases were failing.
> We need your expert inputs/suggestions on the following failure:
> Under mcs/class/corlib, MonoTests.System.MathTest.TestIEEERemainder
> fails with the error message:
> Negative Dividend expected:<-9223372036854775808> but was:<128>
> at MonoTests.System.MathTest.TestIEEERemainder () [0x000bf] in
> at (wrapper managed-to-native)
> at System.Reflection.MonoMethod.Invoke (System.Object obj,
> BindingFlags invokeAttr, System.Reflection.Binder binder,
> System.Object parameters, System.Globalization.CultureInfo culture)
> [0x0003f] in
> On analysing further, it is observed that:
> - In System/Math.cs, IEEERemainder uses InternalInt64BitsToDouble.
> Changing this to Int64BitsToDouble gave the expected result and the
test case passed.
> - InternalInt64BitsToDouble() uses SwappableToDouble() under
> System/BitConverter.cs . Here it gets into (!IsLittleEndian) which
> fills the value in the big endian (reverse) order whereas
> Int64BitsToDouble uses
> ToDouble() which doesnot perform this conversion based on endianness
> We would like to know your valuable inputs on how to address this
> issue for Solaris 7 sparc.
> Please let us know whether it would be correct to use
> Int64BitsToDouble instead of InternalInt64BitsToDouble (conditionally
> built for Solaris 7 sparc).
> Thanks & regards,
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