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  <div class="titlepage"><div><div><h1 style="clear: both"><code>static void _set_has_exception(Impl &amp;&amp;, bool) noexcept</code></h1></div></div></div>
  <p>Sets whether the implementation&rsquo;s error code has a domain or category matching that of POSIX <code>errno</code> by setting or clearing the relevant bit in the flags. Constexpr where possible.</p>

<p><em>Requires</em>: Always available.</p>

<p><em>Complexity</em>: Consta