<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/141636>141636</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [libc] Implement wmemset
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          michaelrj-google
      </td>
    </tr>
</table>

<pre>
    Described in C23 (page 458): https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3220.pdf#page=458

wmemset sets an array of widechars to a specific value.

Here's a checklist for what you'll need to do for this:
- [ ] Add the implementation of `wmemset` in [`/src/wchar`](https://github.com/llvm/llvm-project/tree/main/libc/src/wchar)
- [ ] Add tests for `wmemset` in [`/test/src/wchar`](https://github.com/llvm/llvm-project/tree/main/libc/test/src/wchar)
- [ ] Add `wmemset` to [`entrypoints.txt`](https://github.com/llvm/llvm-project/blob/main/libc/config/linux/x86_64/entrypoints.txt) for at least x86_64 and whatever you're building on
- [ ] Add `wmemset` to [`include/wchar.yaml`](https://github.com/llvm/llvm-project/blob/main/libc/include/wchar.yaml)

(Reserved for specific assignee)
</pre>
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