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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - cbrt(2.0) computed differently by llvm and gcc"
href="https://bugs.llvm.org/show_bug.cgi?id=46909">46909</a>
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</tr>
<tr>
<th>Summary</th>
<td>cbrt(2.0) computed differently by llvm and gcc
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Support Libraries
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>balarishi.bhogadi@amd.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>$ cat foo.c
#include <math.h>
#include <float.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
double d;
d = 2.0;
printf("pow((2.0), 1.0/3.0) = % .16e\n", pow((2.0), 1.0/3.0));
printf("cbrt(2.0) = % .16e\n", cbrt(2.0));
}
$ gcc foo.c -o foo -lm
$ ./foo
pow((2.0), 1.0/3.0) = 1.2599210498948732e+00
cbrt(2.0) = 1.2599210498948732e+00
$ clang foo.c -o foo -lm
$ ./foo
pow((2.0), 1.0/3.0) = 1.2599210498948732e+00
cbrt(2.0) = 1.2599210498948734e+00 // <====</pre>
</div>
</p>
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