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<body><span class="vcard"><a class="email" href="mailto:richard-llvm@metafoo.co.uk" title="Richard Smith <richard-llvm@metafoo.co.uk>"> <span class="fn">Richard Smith</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - real * complex done wrong"
href="https://llvm.org/bugs/show_bug.cgi?id=16645">bug 16645</a>
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<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
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<td style="text-align:right;">CC</td>
<td>
</td>
<td>richard-llvm@metafoo.co.uk
</td>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>DUPLICATE
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - real * complex done wrong"
href="https://llvm.org/bugs/show_bug.cgi?id=16645#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - real * complex done wrong"
href="https://llvm.org/bugs/show_bug.cgi?id=16645">bug 16645</a>
from <span class="vcard"><a class="email" href="mailto:richard-llvm@metafoo.co.uk" title="Richard Smith <richard-llvm@metafoo.co.uk>"> <span class="fn">Richard Smith</span></a>
</span></b>
<pre>Note that we do not have full support for Annex G, and in particular I has
_Complex type, not _Imaginary type. Under Annex G's semantic model,
_Complex double f(_Complex double I, double infinity) {
return 0.0 * (0.0 + infinity * I);
}
gives the same result that Clang gives in this case (nan + nan_i), and likewise
for
infinity * (infinity + infinity * I)
(where we get nan + inf_i).
So I think the issue here is "Clang does not support _Imaginary" (technically a
feature request, not a bug, since it's an optional feature). Please reopen if
you think there's something deeper that's wrong here.
*** This bug has been marked as a duplicate of <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - _Imaginary not supported: "clang can't do complex arithmetic""
href="show_bug.cgi?id=8532">bug 8532</a> ***</pre>
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