<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/133517>133517</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [libc][math] Optimize fputil::cast for targets with fast half precision conversion
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            libc
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          meltq
      </td>
    </tr>
</table>

<pre>
    `fputil::cast` lacks specialization for targets that have fast half precision to single precision conversions. This leads to the cast being emulated when it could be done using the much faster `static_cast`.  This was observed to cause a slow down, during the performance testing of the `hypotf16` function being introduced [here](https://github.com/llvm/llvm-project/pull/131991).
</pre>
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