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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - std/numerics/complex.number/complex.transcendentals/asin.pass.cpp depends on the sign bit of NaN numbers"
href="https://llvm.org/bugs/show_bug.cgi?id=28936">28936</a>
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<th>Summary</th>
<td>std/numerics/complex.number/complex.transcendentals/asin.pass.cpp depends on the sign bit of NaN numbers
</td>
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>3.9
</td>
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>release blocker
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>Vasileios.Kalintiris@imgtec.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
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<th>Blocks</th>
<td>28600
</td>
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>I marked this test as a release blocker because it is failing in the 3.9rc1
release. However, even though I'm not too familiar with the IEEE754 standard, I
believe that this test relies on behaviour specified by the newer, 2008
revision.
One test case that fails is std::complex<double>(NAN, -2) which on the MIPS
board produces r=(NAN, NAN), instead of the expected (NAN,-NAN) value:
else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
{
assert(std::isnan(r.real()));
assert(std::isnan(r.imag()));
assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
}
All the cases from "cases.h" that fail on the asin.pass.cpp test, depend on the
sign-bit being set for NaNs too.</pre>
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