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<body><span class="vcard"><a class="email" href="mailto:i@maskray.me" title="Fangrui Song <i@maskray.me>"> <span class="fn">Fangrui Song</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - sqrt(denormal float) gives -infinity with fast-math"
href="https://bugs.llvm.org/show_bug.cgi?id=34994">bug 34994</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr>
<tr>
<td style="text-align:right;">Assignee</td>
<td>unassignedbugs@nondot.org
</td>
<td>spatel+llvm@rotateright.com
</td>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>i@maskray.me
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - sqrt(denormal float) gives -infinity with fast-math"
href="https://bugs.llvm.org/show_bug.cgi?id=34994#c19">Comment # 19</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - sqrt(denormal float) gives -infinity with fast-math"
href="https://bugs.llvm.org/show_bug.cgi?id=34994">bug 34994</a>
from <span class="vcard"><a class="email" href="mailto:i@maskray.me" title="Fangrui Song <i@maskray.me>"> <span class="fn">Fangrui Song</span></a>
</span></b>
<pre>Mark as fixed.
x86-64 and aarch64
% for i in ieee preserve-sign positive-zero; do clang++ a.cc -ffast-math
-fdenormal-fp-math=$i && ./a.out; done
sqrt(1.00000005e-34) = 9.99999984e-18
sqrt(1.00000004e-36) = 1.00000005e-18
sqrt(0) = 0
sqrt(0) = 0
sqrt(0) = 0
sqrt(0) = 0
sqrt(0) = 0
sqrt(1.00000005e-34) = 9.99999984e-18
sqrt(1.00000004e-36) = 1.00000005e-18
sqrt(0) = 0
sqrt(0) = 0
sqrt(0) = 0
sqrt(0) = 0
sqrt(0) = 0
sqrt(1.00000005e-34) = 9.99999984e-18
sqrt(1.00000004e-36) = 1.00000005e-18
sqrt(0) = 0
sqrt(0) = 0
sqrt(0) = 0
sqrt(0) = 0
sqrt(0) = 0
ppc64le (POWER9)
sqrt(1.00000005e-34) = 9.99999984e-18
sqrt(1.00000004e-36) = 1.00000005e-18
sqrt(9.99999935e-39) = 9.99999968e-20
sqrt(9.9999461e-41) = 9.99997303e-21
sqrt(1.0005271e-42) = 1.00026351e-21
sqrt(9.80908925e-45) = 9.90408493e-23
sqrt(0) = 0
sqrt(1.00000005e-34) = 9.99999984e-18
sqrt(1.00000004e-36) = 1.00000005e-18
sqrt(9.99999935e-39) = 9.99999968e-20
sqrt(9.9999461e-41) = 9.99997303e-21
sqrt(1.0005271e-42) = 1.00026351e-21
sqrt(9.80908925e-45) = 9.90408493e-23
sqrt(0) = 0
sqrt(1.00000005e-34) = 9.99999984e-18
sqrt(1.00000004e-36) = 1.00000005e-18
sqrt(9.99999935e-39) = 9.99999968e-20
sqrt(9.9999461e-41) = 9.99997303e-21
sqrt(1.0005271e-42) = 1.00026351e-21
sqrt(9.80908925e-45) = 9.90408493e-23
sqrt(0) = 0
The input constants the 3 arches use are the same.</pre>
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